POWER PLANT ENGG MCQ PART 8

1. Combined cycle power plants may need
(a) MHD generator
(b) Thermionic converter
(c) Thermometric generator
(d) All of the above

Answer-D

 

2.Depreciation charges are high in the case of
(a) Thermal plant
(b) Diesel plant
(c) Hydroelectric plant
(d) Wind power plant

Answer-A

 

3.Which of the following in a thermal power plant is not a fixed cost?
(a) Fuel Cost
(b) Interest on capital
(c) Depreciation
(d) Insurance charges

Answer-A

4.The overall efficiency of a thermal power plant is equal to
(a) Ranking cycle efficiency
(b) Carnot cycle efficiency
(c) Regenerative cycle efficiency
(d) Boiler efficiency X Turbine efficiency X Generator efficiency

Answer-D

 

5.Which of the following coals has the highest calorific value?
(a) Peat
(b) Lignite
(c) Bituminous
(d) Anthracite

Answer-D

 

6.Compounding of steam is done for
(a) Reducing the work done
(b) Increasing the rotor speed
(c) Reducing the rotor speed
(d) Balancing the turbine

Answer-C

 

7.Major share of power generated in India is through
(a) Thermal power plants
(b) Nuclear power plants
(c) Hydro-electric power plants
(d) Solar energy

Answer-A

 

8.The advantage of using pulverized fuel include
(a) Higher boiler efficiency
(b) Easy and complete combustion
(c) Low air requirement
(d) All of these

Answer-D

 

9.In a thermal power plant, feed water heaters, super heater and air preheaters are mainly
used to
(a) Have a better dust removal in the plant
(b) Have a better Ash removal in the plant
(c) Increase the efficiency of the plant
(d) None of the above

Answer-C

 

10.Through which source is maximum electricity generated in the world?
(a) Water
(b) Nuclear power
(c) Coal
(d) Solar power

Answer-C

 

11.Coal used in power plant is also known as
(a) Steam coal
(b) Charcoal
(c) Coke
(d) Soft coal

Answer-A

 

12.The cost of the fuel transportation is minimum in
(a) Steam power plant
(b) Diesel power plant
(c) hydro-electric plant
(d) Coal based power plant

Answer-C

 

13.In thermal power plant, the pressure of working cycle is developed by
(a) Condense
(b) Super heater
(c) Feed water pump
(d) Turbine

Answer-C

 

14.The pH value of water used for boiler of thermal power plant is
(a) Unity
(b) 7
(c) Slightly more than 7
(d) 10

Answer-C

 

15.For the proper combustion of fuel in a thermal power plant, a proper circulation of air is also needed. The same is provide with the help of
(a) Draft fan
(b) Economiser
(c) Condenser
(d) Cooling Tower

Answer-A

 

16.Super heater is employed to
1. Remove moisture from the vapours
2. Increase the temperature of vapours
3. Heat the feed water
Which of the given statements is incorrect?
(a) 2 and 3
(b) Only 3
(c) 1 and 2
(d) Only 1

Answer-C

 

17.What is separated with the help of magnetic separators in a coal preparation plant?
(a) Pebbles
(b) Iron particles
(c) Dust
(d) Sand

Answer-B

 

18.A condenser in a thermal power plant condenses steam coming out of
(a) Boiler
(b) Turbine
(c) Economizer
(d) Super heater

Answer-B

 

19. In a thermal power plant, which is true for a superheater?
(a) In a superheater pressure rises and temperature remains the same
(b) In a superheater, temperature rises and pressure drops
(c) In a superheater, pressure rises and temperature drops
(d) In a superheater, temperature rises and pressure remains unchanged

Answer-D

 

20. Which is not fundamental element of cogeneration plant?
(a) Prime mover
(b) Electricity generator
(c) Heat recovery system
(d) Power factor improvement system

Answer-D