Power plant engineering. Part – 2

11. Water used in the steam plant is used for cooling in

A. Condenser

B. Turbine only

C. Boiler tube

D. Boiler tubes and turbines

12. Equipment used for pulverizing the coal is known as

A. Ball mill

B. Hopper

C. Burner

D. Stoker

13. The efficiency of a thermal power plant improves with

A. Increased quantity of coal burnt

B. Larger quantity of water used

C. Lower load in the plant

D. Use of high steam pressures

14. For high head and low discharge the water turbine used

A. Kaplan wheel

B. Pelton wheel

C. Frances turbine

D. Propeller turbine 

15. The most commonly used moderator, in nuclear plant is

A. Heavy water

B. Concrete and bricks

C. Deuterium

D. Graphite

16. Gas turbines works on

A. Bryton or alkinson cycle

B. Carnot cycle

C. Rankine cycle

D. Erricson cycle

17. In diesel engine, the fuel is ignited by

A. Spark

B. Injected fuel

C. Compressing air

D. Ignition

18. Which of the following equipment is installed in thermal power stations to reduce air pollution?

A. Air tilter

B. Economizer

C. Electrostatic precipitator

D. Air pre heater

19. The capital cost of a power plant depends on

A. Total installed capacity only

B. Total number of units only

C. Total installed capacity and number of units as well

D. Neither the installed capacity nor number of units

20. In which part of the thermal power plant, the steam pressure is less than that of atmosphere?

A. Boiler

B. Turbine

C. Condenser

D. Superheater