Thorough explanations are required in order to get these questions rights.

1. Which part of thermal power plant causes maximum energy losses?

a) Boiler

b) Alternator

c) Condenser

d) Ash and unburnt carbon

2. What is the effect of increasing steam pressure on efficiency of steam power plant?

a) Increases linearly

b) Increases nonlinearly

c) Decreases linearly

d) Does not changes

3. What is the effect of increasing steam temperature of thermal power plant on its thermal efficiency?

a) Increases linearly

b) Decreases

c) It does not depends on temperature

d) Increases nonlinearly

4. Overall efficiency of thermal power plant is equal to ___________

a) Thermal efficiency

b) Generation efficiency

c) Multiplication of thermal and generation efficiency

d) Ratio of thermal and generation efficiency

5. In supercritical pressure steam power plant temperature of steam is __________

a) 480C

b) 240C

c) 600C

d) 150C

6. For increasing the thermal efficiency of thermal power plant pressure in condenser should be:

a) Reduced upto 0.04 kg/cm3

b) Kept above 2.45 kg/cm3

c) As high as boiler pressure

d) Same as atmospheric pressure

7. Economisers are necessary to use for pressure of 70 kg/cm2or more.

a) True

b) False

8. Supercritical pressure boiler scan produce steam at the rate of _________

a) less than 1,500 kg/hr

b) less than 340,000 kg/hr

c) less than 80,000 kg/hr

d) upto 1,000,000 kg/hr