Power Plant Engineering Practice Test 2

1. The input to the deaerator is from a __________ pressure feedwater heater.

2. The temperature rise from condenser to boiler saturation is divided __________ among the feedwater heaters for maximum gain in efficiency.

3. Is regenerative cycle alone useful?

4. When is a drain-cooler used?

5. Apart from feedheating, what should a plant have to obtain a gain in thermal efficiency?

6. Among 1 MW, 2 MW, 30 MW & 660 MW locomotive steam engines, the highest efficiency is?

7. What is the use of surge tank?

8. What is the critical point of steam generation in a "once through" boiler?

9. What effect does the heating of feedwater by steam 'bled' from the turbine has on the Rankine Cycle?

10. What is the relation between a & c if a & c correspond to alpha & gamma respectively, for maximum efficiency of a cycle?