GENERATION OF ELECTRICAL POWER- 2

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11. Capital cost of a gas turbine plant is _________ than that of a steam power plant of same capacity.

same

lower

higher

none

12. Water hammer is developed in a ____________

penstock

draft tube

. turbine

. surge tank

13. The function of a surge tank is ____________

to supply water at constant pressure

to produce surges in the pipe line

. to relieve water hammer pressures in the penstock pipe

none of the above

14. Operating charges are minimum in the case of ________ for same power output .

gas turbine plant

hydel plant

thermal plant

nuclear plant

15. Location of the surge tank in a hydro electric station is near to the ____________

tailrace

turbine

reservoir

none of the above

16. Running cost of a hydro-electric power plant is ____________

equal to running cost of a steam power plant

less than running cost of a steam power plant

more than running cost of a steam power plant

none of the above

17. _______ is the most commonly used as moderator

graphite

sodium

copper

heavy water

18. The function of the moderator in a nuclear reactor is to ___________

stop chain reaction

. absorb neutrons

. reduce the speed of neutrons

. reduce temperature

19. The function of a solar collector is to convert __________

. solar energy into electricity

solar energy into radiation

solar energy into thermal energy

none of the above

20. Most widely used material of a solar cell is ___________

arsenic

cadmium

silicon

steel

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