Hydro Power Plant MCQ

11. Which of the following components is not a part of the hydro-electric plant?

1. Penstock
2. Spillway
3. Surge tank
4. Economizer

12. Sluice gates and automated isolating valves are components of

Valve-house

Head race

Spill way

Penstock

13. Which alternator will have more number of poles?

1. coupled to steam turbine
2. coupled to gas turbine
3. coupled to hydraulic turbine
4. None of the above

14. Economisers are used to heat

1. Coal
2. Air
3. Steam
4. Feed water

15. Kaplan turbines are used whenever the water head is

1. low
2. high
3. medium
4. (b) and (c)

16. In hydro power station which components is used to step up the generating voltage to a suitable transmission voltage?

1. Transformer
2. Generator
3. Transmission line
4. Turbine

17. In reaction turbine

1. kinetic energy is appreciable as the fluid leaves the runner and enters the draft tube
2. the vanes are partly filled
3. total energy of fluid is converted to kinetic energy in the runner
4. it is exposed to the atmosphere

18. Francis Turbine is a

1. Axial flow turbine
2. Radial flow turbine
3. Impulse turbine
4. Outward flow turbine

19. The flow duration curve at a given head of a hydroelectric plant is used to determine

1. diversity factor of the plant
2. total power at the site
3. total energy available
4. load factor of the plant

20. A very high head hydroelectric plant use

1. Francis turbine
2. Propeller turbine
3. Pelton wheel
4. Kaplan turbine