1. A nuclear power plant is invariably used as a
(a) peak load plant.
(b) base load plant.
(c) stand-by plant.
(d) spinning reserve plant. Answer
2. The functions of using economizer in thermal power station is to
(a) heat air.
(b) preheat steam.
(c) remove feed water.
(d) heat feed water. Answer
3. The purpose of using super heater in a thermal power station is to
(a) heat air.
(b) heat steam.
(c) heat feed water.
(d) control steam. Answer
4. At low value of power factor, the cost of generation of a power station will be
(a) high.
(b) low.
(c) remain same.
(d) none of the above. Answer
5. If the load factor of a power station is high then its cost of generation will be
(a) High.
(b) Low.
(c) Remain same.
(d) Depend upon plant type. Answer
6. In steam power station super heater consists of group of tubes made of
(a) chromium-molybdenum.
(b) tungsten-platinum.
(c) chromium-platinum.
(d) steel-tungsten. Answer
7. The purpose of providing pilot exciter on generator is to
(a) excite the poles of generator.
(b) excite the poles of main exciter.
(c) provide starting torque to main exciter.
(d) provide starting torque to generator. Answer
8. Which of the following is the disadvantage of static capacitor for power factor improvement?
(a) Easily damaged by high voltage.
(b) Cannot be repaired.
(c) Short service life.
(d) All of the above. Answer
9. One kilowatt hour is equal to
(a) 532 k cal.
(b) 735 k cal.
(c) 746 k cal.
(d) 860 k cal. Answer
10. Load curve is useful in deciding the
(a) operating schedule of generating units.
(b) sizes of generating units.
(c) total installed capacity of the plant.
(d) all of the above. Answer
11. The source of energy of the sun is
(a) nuclear fission.
(b) chemical reaction.
(c) nuclear fusion.
(d) photoelectric effect. Answer
12. Load factor of a power station is defined as
(a) maximum demand/average load.
(b) average load x maximum demand.
(c) average load/maximum demand.
(d) none of the above. Answer
13. Which of the following load is responsible for lower power factor of supply system?
(a) induction motors.
(b) resistive loads.
(c) synchronous Motors.
(d) all of the above. Answer
14. Annual operating expenditure of a power plant consists of
(a) fixed charges.
(b) semi-fixed charges.
(c) running charges.
(d) all of the above. Answer
15. Which of the following power plant has least fuel transportation?
(a) nuclear power plants.
(b) diesel generating plants.
(c) thermal power plants.
(d) steam power stations. Answer