NTPC interview questions -2008

Some more questions asked in NTPC during campus recruitment

1.What are the laws of thermodynamics

2.Why is Zeroth law called so

3.What is the physical significance of Entropy

4.Relevance of entropy in practicals

5.What is a vapour compression cycle

6.What is 1 ton of refrigeration

7.What is the working of AC

8.Tell some ways to transfer power from one corner to another corner of a room.

9.How Hydraulic coupling works

10.What is NPSH? (Ans:Net Positive Suction Head)

11.Tell different types of couplings employed

12.Plot Q vs h curve