Campus Recruitment of Reliance Energy - 2009

Eligibility Criteria 10(60%) 12th (60%) CPI (6)
Branches allowed - Civil, Mechanical, Electronics, Electrical, Production
Selection procedure: Written test (45 mins)
GD (a panel of 10)
Interview (10- 15 mins)

Written test Questions (MCQs)
1. Which process imparts hardening
2.Kaplan turbine is which type of turbine
3. Coefficient of Performance(COP) of refrigerator and COP of heat are related
4. Laminar flow depends on
5. Topping Cycle efficiency and bottoming cycle efficiency are
6. Flow through pipe is maximum and minimum at
7. Classify turbines on the basis of heads(low, medium, high)
8. In Gas turbine which cycle is used
9. A numerical on velocity diagram
10.Find work done given nozzle angle and some other parameters
11.Which type of force acts in flange coupling and bolt when subjected to some situation (given in the prob)
12. A numerical where carnot cycle efficiency is given and higher temperature is given and asked to find the lower temperature
13.Torque and diameter are given and asked to find out shear stress
14.Blade angle, runner diameter, no. of revolutions given , Find absolute velocity
15.In a heat exchanger water will be hot and cold in outer or ineer shell - something like that
16.If wire insulation thickness varies what happens to conduction and convection
17.Relation between modulus of elasticity, bulk modulus and poision ratio.
18.How many inversions are possible with slider crank mechanisms
19.Corollis component of acceleration exists in which of the following mechanism
20.Data is given for discharge, power and something else and asked for which turbine it is suitable
21.How boiler are classified as primary, secondary on the basis of economizer, superheating, reheating etc
22.Al, Fe, water - in these how the thermal conductivity varies
23.There is a matching
Gas Turbine Brayton Cycle
Steam Power Plant Rankine cycle
two stroke engine marine cycle

24.Among the following which type of material is suitable for the Hot die Casting - Options :Ti, ......
25.When nut and bolt are tightened which forces will generate on bolt and tube

GD Topic
Child is the father of a man
Terrorism has no religion
Rational of Indian space adventure like Chandrayan

Interview Questions
1.They are asking about the Projects done
2.Questions are related to Steam Turbine, Francis Turbine, Reaction Turbine
3.What is penstock
4.How you design a blade for any turbine
5.Velocity diagrams of moving blade and stationary blade
6.Basic difference between Francis and Kaplan turbine

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Campus Recruitment of MRPL - 2009

MRPL(Manglore Refinery and Petrochemicals Limited) - a subsidary of ONGC
Allowed branches: Mechanical, Electrical, Civil

Eligibility criteria: Top 15 students from GEN/OBC and CPI 6.5 for SC/ST

They have shortlisted the students accordingly for the interview

Interview Questions (Combined HR + Tech):
1.Tell me about urself, strengths, weaknesses, future plan, areas of interest
2.What is Zeroth law of thermodynamics
3.Expand BHN
4.Why heat treatment is done
5.What do you mean by hardness >> strength
6.Draw Rankine cycle
7.Explain all the processes in this Rankine cycle
8.What is sub cooling
9.What is Boiler Drum and where it will be in the boiler
10.What is otto cycle and where it is used
11.Where Rankine cycle is used
12.What is annealing and hardening
13.What is submerged welding
14.The delivery valve is closed in both the reciprocating and centrifugal pump, pressure gauges are fitted what happens when motor is on
15.What are the different types of welding
16.What is soldering
17.What is Thermite welding
18.What is reaction in thermite welding and what are the types of reactions
19.Basic difference between slotter machine and shaper machine
20.What is indexing and why it is used
21.Name the parts of Centrifugal pump and where is the suction valve placed in the casing
22.What is soldering and brazing
23.What is differential gear box
24.Define Octane number and Cetane number

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Questions from Bajaj Campus Recruitment

1.What is the material of Crank Shaft? Standard time= a. normal time minus allowance b. reliability time.
2. Energy stored in the spring when it is fully compressed without any deformation is ——– Ans. Resilience or proof resilience
3. Question on the relation ?L=PL/AE. What is ? (strain)? Ans. P/AE
4.Lower spindle speed is necessary for? if diameter of w/p is large when depth of cut is high
5. For which of the following material machinability is high? Ans. Aluminium
6. 24 & 2 in M24X2 represent which of the following two parameters respectively?
7.What is the equation governing kinematic links and pairs?
a. L=2p-3 b. L=2p-4 c. L=3p-5]
8.Pick out the wrong statement:-
Joule cycle consists of 2 constant volume processes and 2 adiabatic processes
Otto cycle consists of 2 constant volume processes and 2 adiabatic processes
Ericsson cycle consists of 2 constant volume processes and 2 adiabatic processes
None of the above
For same compression ratio which of the following cycles is more efficient?
a. otto b. diesel
9.The angle between face of the tool and plane parallel to the base of the tool is
a. rake angle b. clearance angle c. cutting edge angle d. lip angle
10.Bevel gears are used for transmitting torque between
Intersecting & coplanar shafts
Non-intersecting & non-coplanar shafts
Non-parallel & non-coplanar shafts None of the above
11.Expansion process in Otto cycle lasts from TDC to BDC
30 degrees before TDC till 50 degrees before BDC
30 degrees after TDC till 50 degrees after BDC none of the above
12.Which type of thread is more effective for power transmission in one direction?
a. square b. acme c. buttress
13.The state of a liquid during evaporation is
a. vapour b. steam c. water vapour
14.Throttle valve is used in steam engines to
control pressure of steam
control volume of steam
control temperature of steam none of the above

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Some more questions from BHEL - 2009

1. The ratio of two specific heats of air is equal to. = 1.41

2. A perfect gas at 270C is heated at constant pressure till its volume is double. The final temperature is = 3270C

3. An engine operates between temperature of 9000K and T2 and another engine between T2 and 8000K. For both to do equal work, value of T2 will be. = 6500K

4. Internal energy of a substance depends on = Temperature

5. Work done in compressing 1kg of gas adiabatically from p1,V1,T1 to p2, V2, T2 is equal to = Cv(T2-T1)

6. The unit of entropy is = J/kg 0K

7. Indicated power of a 4-stroke engine is equal to = pLAN/2

8. Which of the following is not an internal combustion engine :

a) 2 stroke petrol engine b) 4 stroke petrol engine c) Diesel engine d) steam engine e) Gas turbine. = (d)

9. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the:

a) exhaust will be smoky b) piston rings would stick into piston grooves c) exhaust temperature will be high d) engine starts overheating e) all of the above. = (e)

10. The spark plug gap is normally maintained at: = 0.45 to 0.6mm

11. A distributor in spark ignition engines performs the function of : = Providing the correct firing order in engine

12. Which of the following does not relate to C.I. engine:: a) fuel pump b) fuel injector c) governor d) carburetor e) flywheel = (d)

13. Air fuel ratio in a jet engine is = 60:1

14. What is the value of Prandtl No.?

15. In domestic refrigerator, the tubes at the back of the refrigerator are: a) evaporator b) condenser c) capillary tubes d)………

16. Which refrigerants has the highest critical point temperature. = Freon-11

17. Wet bulb temperature is. = indication of amount of moisture in air

18. On psychometric chart, dry bulb temperature lines are. = Vertical

19. Surface tension has the units. = newtons/m

20. The line of action of the buoyant force acts through the. = Centroid of the displaced volume of fluid

21. A pressure of 25m of head of water is equal to. =245kN/m2

22. For a submerged body to be in stable equilibrium, the center of gravity should be. =Below the center of buoyancy.

23. The actual velocity at vena contracta for flow through an orifice from a reservoir of height H=?. =Cvv2gH

24. A body weighing 2kg in air weights 2.5kg when submerged in water. Its specific gravity is. = 6

25. In a free vortex motion: = each particle moves in a circular path with a speed varying inversely as the distance from the center.

26. A centrifugal pump has speed-1000rpm, Flow-1200l.p.m, Head-20m, Power-5H.P. If its speed is increased to 1500rpm, new flow will be.: = 1800l.p.m

27. Runaway speed of a hydraulic turbine is: = the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open.

28. 10m of water column is equal to = 100kN/m2

29. M.I. of a circular area about an axis perpendicular to the area is: = pr4/2

30. A projectile is fired at an angle ? to the vertical. Its horizontal range will be maximum when ? is . =450

31. An elevator weighing 1000kg attains an upward velocity of 4m/sec in two seconds with uniform acceleration. The tension in the supporting cables will be = 1200kg.

32. A 13m ladder is placed against a smooth vertical wall with its lower end 5m from the wall. What should be the co-efficient of friction between ladder and floor so that it remains in equilibrium. = 0.21

33. A car is moving with a velocity of 60km/hr and possesses energy of 5×105 joules. The mass of the car will be. =3000kg.

34. If l is the span of a light suspension bridge whose each cable carries total weight (w) and the central diop is y, the horizontal pull at each support is: = wl/y OR

35. A beam of length l, having uniform load w kg/unit length is supported freely at the ends. The moments at mid span will be: = wl2/8.

36. A boiler shell 200cm dia and plate thickness 1.5cm is subjected to internal pressure of 1.5MN/m2, then the hoop stress will be. = 100N/m2

37. 100KW is to be transmitted by each of two separate shafts. A is turning at 250rpm and B at 300rpm. Which shaft must have greater diameter.: = B

38. Two identical leaf springs of spring constant k are arranged like cantilevers in parallel and attached at free end by a spring of spring constant k. The equivalent spring constant of combination is; = 1.5k.

39. Automobile steering gear is an example of: = lower pair.

40. The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is. = Universal coupling.

41. To transmit power from one rotation shaft to another whose axes are neither parallel nor intersecting, use: = Spiral gear.

42. A gear having 100 teeth is fixed and another gear having 25 teeth revolves around it, the centre lines of both gears being joined by an arm. How many revolutions will be made by gear of 25 teeth for one revolution of arm. = 5 rev.

43. The secondary critical speed of a shaft occurs at: = twice the speed of primary critical speed.

44. Brittle coating technique is used for: = experimental stress analysis.

45. Factor of safety is the ratio of: = yield stress/working stress.

46. Type of gear used for non-intersection perpendicular shafts: = Hypoid gears.

47. Corrosion resistance of steel is increased by adding: = Chromium & Nickel

48. The product of Cupola is called: = cast iron

49. Brinell tester uses a hardness steel ball of size: = 10mm

50. Sintered and tungsten carbides can be machined by: = EDM

51. What kind of abrasive cut off wheel should be used to cut concrete, stone and masonry? =Diamond grit.

52. In break-even analysis, total cost consists of: = Fixed cost + Variable cost.

53. The amount deducted from the salary of workers towards employees provident fund is : =deposited in the account of worker with Provident Fund Commissioner.

54. PERT is: = event oriented technique

55. Bar charts are suitable for: = minor works.

56. on a PERT/CPM chart represents: = a significant event representing some mile-stone

57. Electron volt is the unit of : = Energy.

58. Seamless tubes are made by?

59. Reheating in gas turbine results in: = increase of work ratio and decrease of thermal efficiency.

60. Why DC current is not used in transformer?

61. What is the purpose of draft tube in hydraulic turbines: = to convert the kinetic energy into pressure energy.

62. A mass of 100kg is falling from a height of 1m and penetrates the sand to 1m. what is the resistance force of the sand?

63. Two cars travel in the same direction at 40km/hr at a regular distance. A car comes in the opposite direction at 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between the two cars?

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BHEL Campus Recruitment - 2009

Written test questions:

A total of 240 questions. 120- Technical questions in Mechanical Engineering. 120- General Apptitude questions. (Quantitative Aptitude, Reasoning Ability, Logical thinking, English usage).

The questions were mainly asked in

*Thermodynamics

*Engineering Mechanics

*Theory of machines

*Production tech

One Mark for correct answer, 1/5th for wrong answer. Five choices were given

Some of the questions are:

1)Unit of Entropy (J/kg K or kJ/kg K)?

2)A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the resistance force given by sand?

3)Ratio of specific heats of air ? (1.41)

4)A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity of the liquid ?

5)Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?

6)A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V* [density of pressure vessel material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or stress in the radial direction =p*r/2t?

7) A problem in force calculation in a body moving in a inclined surface?

8)Composition of bronze?

ans. Copper+zinc.

9) Compostion of stainless steel.?

ans. iron+chromium+nickel+carbon.

10) CI is manifactured in which process?

ans. cupola process

11)What percentage of carbon is preset in pig iron?

ans. 4.5 to 6%.

12)Water is available at 10m height. What is the pressure available?

ans= pressure=density*g*height;

p=1000*9.81*10;

p=98100N/m2.

13)What will happen if the speed of the centrifugal pump doubles?

14)The unit eV is widely used in ?

ans. Nuclear and atomic physics.

15)What will happen to the resistance, when the diameter of the conductor is doubled?

16)The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device?

ans. Power= Voltage*current,

Current=Power/Voltage,

Current,I=1000/250=4

amps. V=IR,

Therefore R=250/4=62.5 ohms.

17)Why DC current is not used in transformer?

18)On what principle the sonar/ radar works?

19)Bending moment diagram for the UDL is in what shape?

20)Function of the distributor in petrol vehicles?

ans. Spark timing.

21)Which is not present in CI engines?

ans. carburrettor.

22)What will happen if one cylinder recieves more amount of fuel spray from injectors than other injectors?

23)Purpose of draft tube in hydraulic turbines?

ans. The purpose of a draft tube is toconvert some of the kinetic energy of the flow from the runner (the rotating part of the turbine) intopressure energy and thereby increase the efficiency ofthe hydro power turbine.

24)What is the effect or reheater in the gas turbine?

The advantage of reheater is significantly increased thrust; the

disadvantage is it has very high fuel consumption and inefficiency.

25)Problems involving with fricition coefficient.

26)Factor of safety = Yeild stress/Working stress.

27)Which is the example of non parallel power transmission (Universal coupling)?

28)For perpendicular shafts worm gear is used?

29)A planet gear with 25 teeth is meshed with a sun gear of 100 teeth. Both are connected using a arm. How many rotations are needed for planet gear to complete one rotation around the sun gear?

30)What is equivalent spring constant for spring in parallel?

31) Some questions was asked related to boundary layer and vortex flow.

32) 5 questions were asked in PERT, Process planning, Product planning, Break even analysis.

33)How are tungsten and sintered composite materials are machined?

(Electro Discharge Machining, EDM)

General Apptitude:

very easy.

There are 120 questions .

English:

Detect the words with wrong spellings (5 questions).

Fill in the blanks with appropriate words(5 questions).

Two reading comprehensions were given(10 questions).

Find the error in the sentence (8 questions).

Reasoning:

Seating arrangement problems.

Find the relation between them.

Quantitative ability:

50% of the questions are from basic geometry .

Remaining were very general and easy. But many questions are there that’s y you should consider time factor and be quick.

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Campus Recruitment of MIDMAC contracting Company -2009

MIDMAC Contracting Company

Allowed branches:
Mechanical
Electrical
Civil

Selection Procedure:
Only Interview

1.Interview questions for mechanical
2.what do you know about air conditioning?
3.Are you interested to work in Midmac Qatar
4.what is lap welding
5.what is the instrument used to test lap welding
6.composite bar of steel(I-section) and different materials, what is the momment of inertia?
7.asked about Summer training
8.working of air conditioning
9.what do you mean by 1 ton refrigeration
10.what is fire line flow

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ACC Concrete Placement Paper

1. How many inchs are there in one mm?

1 inch = —– mm?
a) 25.4
b) 254
c) 2.54
d) None of these

2. How many HP are there in one KW?
1 KW = ___ HP?

a) 122
b) 1.47
c) 1.37
d) None of these

3. A drive pulley rotates at 1440 rpm. It has a 2″ diameter. At what rpm will the driven pulley with 4″ rotate?

a) 1440
b) 2880
c) 144
d) 720

4. If H.P. of a motor is fixed, What is the relation between the torque and rpm of the motor:

a) Torque will not change with change in rpm
b) Torque will change proportionally to rpm
c) Torque will change universally proportional to rpm
d) None of these

5. If one cubic meter of cement equal to 1440 kg, calculate the density of the cement:

a) 1.440
b) 14.40
c) 144.0
d) 1440

6. In a concrete cantilever beam, the reinforcement should be…… to take the tension

a) in the neutral axis
b) bottom layer
c) top layer
d) None of these
The reinforcement should be in which axis or layer to take the tension.

7. What do you mean by the Point of contra flexure?

a) The point where shear force is zero & bending moment is maximum
b) The point where bending moment is zero & shear force is maximum
c) Point of contra flexure is the point where shear force & bending moment both are maximum
d) None

8. With increase in which of the following, does the frictional force increase?

a) Bodies’ Size
b) Contact area between two bodies
c) Co efficient of friction
d) None

9. Which of the following are used in a two stroke diesel engine?

a) inlet valves are used
b) inlet ports are used
c) None of these


10. What is the relation between BHP, IHP & FHP is

Full form of BHP - Brake Horse Power

Full form of FHP - Frictional HP

a) BHP = IHP + FHP
b) IHP = BHP + FHP
c) FHP = IHP + BHP
d) None of the above

11. In order to have maximum resistance against the buckling failure, what kind of cross section should the column have? (assume the cross sectional area to be same for all of these)

a) Rectangle
b) Square
c) Circular
d) None of these

12. Water flows in a pipeline. Suddenly we decrease the diameter. The velocity of water will increase and pressure will ____ ?

a) increase
b) be same
c) No relation with cross sectional area
d) decrease

13. What is the function of a lead screw in a lathe machine?

a) turning of shaft
b) cutting gear
c) cut the thread
d) cut the key slot

14. What is the Unit of vibration?

a) Gallon
b) Hertz
c) Volt
d) None of these

15. The comfort level gets better with which of the following in air conditioning

a) Decrease in humidity
b) Decrease in temperature
c) Decrease in dust content
d) All of the above

16. Dry bulb temperature = wet bulb temperature when

a) Humidity is 0%
b) Humidity is 50%
c) Humidity is 100%
d) None of these

17. Which of the following engines uses a Carburetor?

a) Modern diesel engine
b) Petrol Engine
c) Cole Engine
d) None of these

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Campus recruitement of Tehri Hydro Corporation

Tehri Hydro Corporation
Public Sector Undertaking(PSU)

Eligibility Criteria
10th 60%
12th 60%
CPI 6.5 (General)
CPI 6 (SC/ST)
Branches allowed - Mechanical, Production and Industrial Engineering, Electronics, Electrical
(they said they are going to come again to recruit Civil)

Selection Procedure
Interviewed all those who fulfill the eligibility criteria
Interview Questions (mostly from Fluid Mechanics and Hydraulic Machines
1.What is Turbine
2.What are the parts of turbine
3.Working of a turine
4.Basic difference between turbine and pump
5.What is spiral casing
6.Define Draft tube
7.Explain NPSH with the help of diagrams

Some general HR questions also asked by them

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Campus Recruitement of Simplex Infrastructures

Simplex Infrastructures
Eligibility criteria
10th - 60%
12th - 60%
CPI - greater than 5.5

Selection Procedure
Written Test
Interview

Written Test- Aptii and Technical -for 30mins
Aptii is mostly Genral Knowledge and verbal
Technical covered all the topics but the paper was easy

Interview Questions
HR..
1.Tell me about your self
2.Your background
3.What is your vision
4.What all subjects you have studied(for this they started asking one question from each subject)

Tech..(mainly hydraulics)
1.What are hydraulic machines
2.What are the different hydraulic turbines
3.Difference between turbine and a pump
4.One question from material science
5.What project you have done and its details

The interview is about 15-20 mins each

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More Interview Questions

1.What are the assumptions in basic thermodynamic cycles
2.differences between air standard cycles and fuel air cycles
3.differences between supercharging and turbocharging
4.PV diagram for compressor
5.why isentropic compression is preferred
6.where pitting is maximum on gear tooth
7.what is mist lubrication
8.Gears of automobile are made of??
9.Which type of motor is used in traction
10.How friction power loss is measured in four wheeler
11.What is the purpose of a silencer
12.Hammer blow in pipe is due to bending and blockage or abrupt change in cross section area
13.What is the similarity in CAD and CAM
14.What are the processes used to increase the machinability of steel
15.In which type of fluid there is no shear stress
16.Purpose of Jigs and fixtures
17.In flange coupling, strength of bolt is tested on what basis
18.What is the system used in IC engines for smoothing the velocity
19.Purpose of supercharging
20.What is the material used for crank shaft
21.Formula for Degrees of Freedom
22.Which material has highest percentage of carbon
23.If petrol used in diesel engine (knocking, poor starting characteristics)

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Interview Questions

Machine Design

1. Differentiate between service factor and factor of safety.
2. Draw a typical true stress versus strain curve .
3. What is wahl’s stress factor
4. Explain hydrodynamic theory of lubrication
5. Classify welded and riveted joints.
6. Explain the term virtual number of teeth in helical and bevel gears
7. How do you specify the life of an anti friction bearing?
8. Explain the term membrane stresses in vessels under pressure

Thermodynamics

1. What are various thermodynamic systems and their basic definitions?
2. What is meant by the triple point of water?
3. Which Law of Thermodynamics is relevant when you inflate a tyre?
4. Explain a perfect gas and its properties

Thermal Engineering

1. Why don’t CI engines require spark plug?
2. What is an indicator diagram? What are its advantages? How is it different from a P-V diagram?
3. What is the difference between turbocharging and supercharging?
4. What is knocking, detonation and pre-ignition? What are the preventive methods?
5. New trends in IC engines, CDI,Ball piston, Cam less engines, GDI and VTEC
6. Explain super saturated flow in steam nozzles
7. What is reheat factor?
8. What is meant by a pulsed detonation engine?
9. Is turbocharging possible in a petrol engine? Why?

Heat and Mass Transfer

1. State Fourier’s laws of conduction in one dimension
2. Explain LMTD and NTU methods
3. Explain the concept of black body
4. Differentiate between parallel and counter flow exchangers

Refrigeration and Air Conditioning

1. Explain simple vapour compression cycle in a refrigerator
2. Which compressor is usually used in air conditioners?
3. What is ASHRAE?
4. Explain Joule-Thomson effect
5. Explain Sensible heating and cooling, superheating and Subcooling
6. What is the significance of multicompressor refrigerator system?
7. What is meant by 1 TR?
8. What is meant by sensible heat factor?
9. Differentiate between RSHF and GSHF
10. What is meant by effective temperature?

Automobile Engineering

1. During the starting of a vehicle, the exhaust smoke appears white. Why?
2. What is a differential and how does it work?
3. What are MPFI and TPFC systems?
4. Mention the common automobile specifications
5. What is SAE?
6. Certain vehicles can be started by keeping the gears engaged, while certain others cannot. Explain

Theory of Machines

1. How do you polish a ball bearing?
2. Which gear is used to obtain maximum speed ratio?
3. Explain the functions of Gyroscopes
4. What are the different types of clutches in use and their working?
5. Draw a Hooke’s joint and explain its function
6. What is the type of braking system in trains? Explain its function
7. Explain the function of a gearbox. What are the types of gearboxes?

Manufacturing Processes

1. Differentiate between a lathe and a milling machine
2. What are CNC and DNC machines?
3. How do you a machine a square cross section in a lathe?
4. What are satellites. Why cant single carbide be cut efficiently?
5. Differentiate between Upmilling and Downmilling
6. What is a self centering chuck?
7. What are the different indexing mechanisms used in conventional machining?
8. Why are EBM processes more widely used than LBM?
9. What are cutting fluids and their functions?

Material Science and Metallurgy

1. Draw the Fe-C equilibrium diagram
2. What is meant by fatigue and creep? Draw and explain the creep curve

Strength of Materials

1. What is the significance of a Bending Moment diagram
2. Can Poisson’s ratio be negative?
3. What is Euler’s theory?
4. What is Endurance limit?

Fluid Mechanics and Hydraulic Machines

1. Differentiate between absolute and kinematic viscosity.
2. What is water hammer? What is the function of surge tank and penstock?
3. What is magnus effect? Explain Mach number.
4. What is Cavitation? Explain slip in reciprocating pumps.
5. Describe draft tube and its applications
6. Describe air vessel, hydraulic ram, accumulator and lift
7. Give classification of turbines and the difference between impulse and reaction turbine

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Mock paper for campus placement 7

Mock campus paper for mechanical 7
1.. Effect of force on a body depends upon
a) magnitude b) direction c) position or line of action d) all of the above

2 Which of the following is not the unit of pressure
a) kg / cm^2 c) atmosphere d) mm of wcl d) Newton

3. The product of either force of couple with the arm of the couple is called
a) resultant couple b) moment of forces c) resulting coule d) moment of the couple

4. If a suspended body is struck at the centre of percussion, then the pressure on the axis passing through the point of suspension will be
a) maximum b) minimum c) zero d) infinity

5. The coefficient of friction depends upon
a) area of contact b) shape of the surfaces c) strength of the surfaces d) all of the above

6. The center of gravity of a triangle lies at the point of
a) concurrence of medians b) intersection of its altitudes c) intersection of besector of angles
d) intersection of diagonals

7. Dynamic friction as compared to static friction is
a) same b) more c) less d) may be less or more depending on nature of surfaces and velocity

8. Tangent of angle of friction is equal to
a) kinetic friction b) limiting friction c) angle of repose d) coefficient of friction

9. If n = no. of members and j = no. of joints, then for a perfect frame, n equals to
a) j – 2 b) 2j – 1 c) 2j – 3 d) 3j – 2 e) 2j – 4

10. Tension in string is maximum at
a) left support b) right support c) mid way d) quarter span e) three quarter span

11. If a body is transmitting torque T kgm at angular speed of Q radian/sec, then h.p. transmitted will be
a) TQ b) T / Q c) TQ / 102 d) TQ / 75 e) 75 TQ

12. For a machine to be self locking, its efficiency should be
a) 100 % b) less than 100 % c) less than 50 % d) more than 50 % e) none of the above

13. Energy is defined as
a) rate of doing work b) capacity of doing work c) power of doing work d) all of the above

14. One Newton is equal to
a) 10^7 dyne b) 10^5 dyne c) 10^4 dyne d) 10^3 dyne e) 10^2 dyne

15 . Cp equal Cv at
a) 0 °C b) 0 K c) 0 °F d) 0 °R

16. The coordination number for FCC crystal structure is
a) 4 b) 8 c) 12 d) 16

17. Which one of the following properties is more sensitive to increase in strain rate?
a) Yield Strength b) Proportional limit c) Elastic limit d) Tensile Strength

18. Heating the hypo eutectoid steels to 30 degree Celsius above the upper critical temperature line, soaking at the temperature and the cooling slowly to room temperature to form a pearlite and ferrite structure, is known as
a) Hardening b) Normalising c) Tempering d) Annealing

19. Fusion curve on p-t diagram for all substances possesses the following slope
(a) zero (b) infinity (c) positive (d) variable

20. Stirling and Ericsson cycles are
(a) reversible cycles (b) irreversible cycles (c) quasi static cycles (d) semi reversible cycles

21. . The ratio of actual discharge to theoretical discharge through an orifice is equal to
a) Cc * Cv b) Cc * Cd c) Cv * Cd d) Cd / Cv

22. A dimensionless heat transfer coefficient which gives a measure of the ratio of the heat transfer rate to the rate at which heat would be conducted within the fluid under a temperature gradient is known as
a) Reynolds number b) Grashoff number c) Nusselt number d) Peclet number

23.. A liquid is boiling in air tight vessel. Using an exhaust tube, the vapour is pumped out at a faster rate. What happens to the liquid?
a) Temperature goes down, boiling continues b) Temperature goes up, boiling continues
c) Temperature goes down, boiling stops d) None of these

24.The most preferred process for casting gas turbine blades is
a) die moulding b)shell moulding c)investment moulding d)sand casting


25.Which one of the following lubricants is most suitable for drawing mild steel wires?
a) Sodium stearate b)Water c)Lime-water d) Kerosene

26.The gating ratio 2:8:1 for copper in gating system design refers to the ratio of areas of
a) Sprue: Runner :Ingate b) Runner: Ingate :Sprue c) Runner: Sprue : Ingate d) Ingate : Runner :Sprue

27. For an ideal fluid flowing through a horizontal pipe, Bernoulli’s equation states that the sum of the pressure and energy per unit volume along the pipe does which of the following? (Assume measurements are taken along the pipe in the direction of fluid flow.)
a.increases as the pipe diameter increases b. decreases as the pipe diameter increases
c .remains constant as the pipe diameter increases
d. increases, then decreases as the pipe diameter increases

28. A municipal water supply is provided by a tall water tower. Water from this tower flows to a building. How does the water flow out of a faucet on the ground floor of a building compare with the water flow out of an identical faucet on the second floor of the building?
a. Water flows more rapidly out of the ground-floor faucet.
b. Water flows more rapidly out of the second-floor faucet.
c. Water flows at the same speed out of both faucets.
d. The speed of the water flow cannot be determined unless the height of the water tower is known.


29. A person is standing near the edge of a railroad track when a high-speed train passes. The person tends to be
a. pushed away from the train. c. pushed upward into the air.
b. pulled toward the train. d. unaffected by the train.

30.An equipment has been purchased for Rs. 120 and is estimated to have 10 years life and a scrap value of Rs. 20 at the end of life. The book value of the equipment at the end of sixth year when the interest rate is 5%(using declining balance methods) will be
a) Rs. 40.95 b)Rs. 51.25 c) Rs. 55.00 d)Rs. 59.25

31. Work study is mainly aimed at
a) Determining the most efficient method of performing a job
b) Establishing the minimum time of completion of job
c) Developing the standard method and standard time of a job
d) Economizing the motions involved on the part of the worker while performing a job

32.. In manufacturing management, the term “ Dispatching” is used to describe
a) Dispatch of sales order b)Dispatch of factory mail c)Dispatch of finished product to the user
e) Dispatch of work orders through shop floor

33. . Minimum work in compressor is possible when the value of adiabatic index n is equal to
(a) 0.75 (b) 1 (c) 1.27 (d) 1.35

34. The critical path of a network is the path that
a) Takes the shortest time b) Takes the longest time c) Has the minimum variance
d) Has the maximum variance


35..It is given that the actual demand is 59 units, a previous forecast 64 units and smoothening factor 0.3. What will be the forecast for next period, using exponential smoothing?
a) 36.9 units b)57.5 units c) 60.5 units d)62.5 units

36. Maximum shear stress in Mohr’s circle is equal to
(a) radius of circle (b) diameter of circle (c) chord of circle (d) centre of circle from y-axis

37. The circumferential stress induced in a thin walled cylindrical vessel is
(a) pD/2t (b) pD/4t (c) pD/t (d) pD/6t

38. The moment diagram for a cantilever beam whose free end is subjected to a bending moment will be
(a) triangle (b) rectangle (c) parabola (d) cubic parabola

39. Zero bending moment in a fixed beam of length “L” carrying uniformly distributed load will occur at
(a)L/2 (b) L/3 (c) L/4 (d) L/6


40. . Sometimes ice is white in colour. It is due to
(a) cooling rapidly (b) sub cooling (c) blowing air during freezing process
(d) presence of dissolved air/gases and impurities

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Mock paper for campus placement 6

Mock campus paper for mechanical 6
1. The efficiency of an inclined plane at α to the vertical is expressed ( for θ as the angle of friction) for horizontal direction applied force will be
a) tan (α + θ) / tan α b) tan α / tan (α + θ) c) tan (α - θ) / tan α d) tan α / tan (α - θ)

2. In a De Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section will be
a) 3.3 bar b)5.46 bar c)8.2 bar d)9.9 bar

3.In an ideal impulse turbine, the
a) absolute velocity at the inlet of moving is equal to that at the outlet
b) relative velocity at the inlet of the moving blade is equal to that at the outlet
c) axial velocity at the inlet is equal to that at outlet
d) whirl velocity at the inlet is equal to that at the outlet

4. The nature of flow of a fluid inside a tube i.e., whether it is turbulent or laminar, is ascertained by
a) Flow velocity b) Tube size c) Viscosity of fluid d) Reynold’s number

5. Stoke’s law is valid when the particle Reynolds number is
a) <1 b) >1 c) <5 d) none of these


6. Flow stress corresponds to
(a) fluids in motion (b) breaking point (c) rupture stress (d) plastic
deformation of solids

7 A steel wire hangs vertically under its own weight. If its density is 8000kg/m^3
and allowable stress is 2000 kg/cm^2 then how much length it can sustain
(a) no limit (b) 1250 m (c) 2500 m (d) 2000 m

8. An equipment has been purchased for Rs. 120 and is estimated to have 10 years life and a scrap value of Rs. 20 at the end of life. The book value of the equipment at the end of sixth year when the interest rate is 5%(using declining balance methods) will be
a) Rs. 40.95 b)Rs. 51.25 c)Rs. 55.00 d)Rs. 59.25

9.Process X has fixed cost of Rs. 40,000 and variable cost of Rs. 9 per unit whereas process Y has fixed cost of Rs. 16000 and variable cost of Rs. 24 per unit. At what production quantity, the total cost of X and Y are equal?
a) 1200 units b)1600 units c)2000 units d)2400 units

10. Two forces acting along the same line but in opposite directions are called
a) Concurrent b) coplanar c) collinear d) non concurrent


11 The total number of instantaneous centres for a mechanism of n links is
a) n b) n/2 c) n-1 d) n(n-1)/2

12. In an automobile the power is transmitted from gear box to differential through
a) Knuckle joint b) Universal joint c) Oldham’s coupling d) Hooke’s joint


13. The initial tension in a belt allowing for centrifugal tension Tc is
a) ( T1 + T2 + Tc)/2 b) ( T1 + T2) + Tc/2 c) ( T1 + T2) + Tc d) ( T1 + T2 – 2 Tc)/2

14.. In a radial cam with a roller on follower, the pitch circle can be defined as
a) The smallest circle tangent to the pitch curve b) The smallest circle tangent to the cam profile
c) A circle drawn with radius equal to the distance between the pitch point and the centre of base circle
d) None of these

15. A 3-stage Rateau turbine is designed in such a manner that the first two stages develop equal power with identical velocity diagram while the third one develops more power with higher blade speed. In such a multistage turbine the blade ring diameter
a) is the same for all the three stages
b) gradually increases from the first to third stage
c) of the third stage is greater than that of the first two stages
d) of the third stage is less than that of the first two stages

16.. In metals subjected to cold working, strain hardening effect is due to
a) slip mechanism b)twining mechanism c)dislocation mechanism d)fracture mechanism

17.. In a eutectic system, two elements are completely
a) Insoluble in solid and liquid state b) Soluble liquid state c) Soluble in solid state
d) Insoluble in liquid state

18. Cast iron is used for machine beds because of its high
a) Tensile Strength b) Endurance strength c) Damping capacity d) Compressive strength

19. Which one of the following properties is more sensitive to increase in strain rate?
a) Yield Strength b) Proportional limit c) Elastic limit d) Tensile Strength

20. Atomic packing factor(APF) in the case of copper crystal is
a) 0.52 b) 0.68 c) 0.74 d) 1.633

21. Martensite is a super-saturated solution of carbon in
a) alpha iron b) beta iron c) gamma iron d) delta iron

22.The unit of Young’s modulus is
(a) mm/mm (b) kg/cm (c) kg (d) kg/cm^2

23. If the radius of wire stretched by a load is doubled, then its young’s modulus will
be
(a) doubled (b) halved (c) become four times (d) becomes one-fourth

24. If a material expands freely due to heating it will develop
(a) thermal stress (b) tensile stress (c) no stress (d) compressive stress
25. The loss of strength in compression due to overloading is known is
(a) hysteresis (b) resilience (c) bouschinger effect (d) creep

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Mock paper for campus placement 5

Mock campus paper for mechanical 5

1. Superheated vapour behaves
(a) exactly as gas (b) as steam (c) as ordinary vapour (d) approximately as gas

2. No liquid can exist as liquid at
(a) vaccum (b) zero pressure (c) centre of earth (d) in space

3. The behaviour of gases can be fully determined by
(a) 1 law (b) 2 laws (c) 3 laws (d) 4 laws

4. Heat and work are
(a) point function (b) system properties (c) path function (d) intensive properties

5. Change in enthalpy of a system is the heat supplied at
(a) constant pressure (b) constant temperature (c) constant volume (d) constant
entropy

6. Which of the following parameters remains constant during ideal throttling process
(a) pressure (b) temperature (c) volume (d) enthalpy

7. In case of refrigeration machine, COP will be equal to
(a) Q2/(Q1-Q2) (b) Q1/(Q1-Q2) (c) (Q1-Q2)/Q1 (d) (Q2-Q1)/Q1

8. If hot water and cold water are mixed, then the entropy of the system will
(a) increase (b) decrease (c) remain same (d) attain negative value

9. A process occur spontaneously if its entropy
(a) increases (b) decreases (c) remain same (d) becomes zero

10. Triple point of a pure substance is a point at which
(a) liquid and vapour exist together (b) solid and liquid exist together
(c) solid and vapour exist together (d) solid. Liquid and vapour phases exist together

11.Small percentage of boron is added to steel to
a) increase hardenability (b)reduce machinability (c)increase wear resistance
d)increase endurance strength

12.. Killed steels
a) have minimum impurity level b) have almost zero percentage of phosphorous and sulphur
c) are produced by LD process d) are free from oxygen

13.. In low carbon steels, presence of small quantities sulphur improves
a) weldability (b)formability (c)machinability (d)hardenability

14.. Which one of the following sets of constituents is expected in equilibrium cooling of a hypereutectoid steel from austenitic steel?
a) Ferrite and pearlite b) Cementite and peralite c) Ferrite and bainite d) Cementite and martensite

15.. Guideways of Lathe bed are hardened by
a) carburizing b) cyaniding c) nitriding d) flame hardening

16.The main aim of compounding of steam turbine is to
a) improve efficiency b)reduce steam consumption c)reduce motor speed d)reduce turbine size

17. Heat conduction does not occur
a) If a physical body is impermeable to any kind of rays
b) If the parts of a body are not in motion relative to one another
c) If the bodies are kept in vacuum d) If the temperature difference between the bodies does not exist

18. Which is not the assumption of Fourier’s equation of heat conduction?
a) Homogeneous substance b) Steady heat flow c) Constant temperature difference
d) Uniform area of cross section

19. Three rods one made of glass, one of pure aluminium and one made of wrought iron are heated to 150˚ C. All the rods are 15 mm in diameter and 300 mm long. The lowest temperature at the free end of the rods will occur in case of
a) Aluminium rod b) Wrought iron c) Glass rod d) Temperature will be same for all the three rods at free end

20. Non dimensional number generally involved in case of heat transfer from horizontal cylinder by natural convection is
a) Grashof’s number b) Nusselt number c) Prandtl number d) All of these

21. A slab of ice has one – half covered with black cloth and the other half with white cloth. The slab is now placed in sunlight. It will be observed that
a) more ice will melt under black cloth b) more ice will melt under white cloth
c) equal amount of ice will melt under the two cloths d) ice will not melt

22. In heat exchanger design, one transfer unit means
a) One fluid exchanging with another fluid of the same chemical compostion
b) The section of heat exchanger which will cause temperature drop of one degree centigrade
c) The section of heat exchanger where heat exchanger where heat transfer surface area is one square metre
d) Condition when the change in temperature of 1˚ C numerically equals the average driving force

23. A liquid to liquid counterflow heat exchanger is used to heat cold fluid from 50˚ C to 150˚ C. Assuming that the hot fluid enters at 250˚ C and leaves at 200˚ C, the log mean temperature difference for the heat exchanger will be closer to
a) 100˚ C b) 128˚ C c) 133˚ C d) 137˚ C

24. A wall has two layers A and B, each made of a different material. Both the layers have the same thickness. The thermal conductivity of material of A is twice that of B. Under the thermal equilibrium the temperature difference across the wall is 30˚ C. The temperature drops in layers A and B will be respectively
a) 20˚ C and 10˚ C b) 10˚ C and 20˚ C c) 15˚ C and 15˚ C d) cannot be predicted

25. Which of the following is a lower pair?
a) Piston and cylinder b) Cam and follower c) Belt drive d) Gear

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Interview questions from Ashoka Leyland - 2008

Some of the questions asked in the interview of Ashoka Leyland are
1.What happens when diesel is filled in a petrol engine and when petrol is filled in a Diesel engine
2.what are fuel cells
3.Describe the automatic suspension system
4.Why Diesel engines are preferred for large volumes
5.What are the differences between a petrol engine and a diesel engine


They also asked some HR questions...

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