Study the multiple choice questions and answers on thermal power plants.
MCQ on Thermal Power Plants
1-The following is the correct order of energy conversion in thermal power plants
(A) Chemical energy – Mechanical energy – Electrical energy
(B) Mechanical energy – Chemical energy – Electrical energy
© Wind energy – Mechanical energy – Electrical energy
(D) Heat energy – Electrical energy – Mechanical energy
(Ans: A)
2-In thermal power plant, turbine is placed
(A) before boiler
(B) in between boiler and generator
© after generator
(D) any of the above
(Ans: B)
3-In the steam condensing power plants
(A) The amount of energy extracted per kg of steam is increased
(B) the steam, converted into water, can be re-circulated with the help of pump
© Both (A) and (B)
(D) None of the above
(Ans: C)
4-In thermal power plants, the dust of flue gases is trapped by
(A) Precipitator
(B) Economizer
© Superheater
(D) Air preheater
(Ans: A)
5-The path of flue gases in Thermal power plant is
(A) Boiler – Economizer – Superheater– Air preheater
(B) Boiler – Superheater – Air preheater – Economizer
© Boiler – Air preheater – Superheater – Economizer
(D) Boiler – Superheater – Economizer – Air preheater
(Ans: D)
6-The following is not a component of Thermal power plant
(A) Condenser
(B) Cooling tower
© Turbine
(D) Fuel tank
(Ans: D)
7-With the increase in _____ the efficiency obeys the ‘law of diminishing returns’
(A) Pressure
(B) Temperature
© Volume
(D) All of the above
(Ans: A)
8- With the increase in _____ the efficiency obeys the ‘straight line law’
(A) Pressure
(B) Temperature
© Volume
(D) All of the above
(Ans: B)
9-Fluid fuels are handled by
(A) burners
(B) stokers
© both (A) and (B)
(D) None of the above
(Ans: C)
10-For steam boilers, the fuel(s) is (are) mainly
(A) Bituminous coal
(B) Fuel oil
© Natural gas
(D) All of the above
(Ans: D)
11-The most common method(s) used for burning of coal is (are)
(A) Stroker firing
(B) Pulverized fuel firing
© both (A) and (B)
(D) None of the above
(Ans: C)
12-A ‘stroker’ is a power operated fuel ___ mechanism
(A) Burning
(B) Feeding
© Handling
(D) Storage
(Ans: B)
13-The spreader stroker, secondary air is supplied
(A) through holes
(B) through nozzles
© from bottom side
(D) any of the above
(Ans: B)
14-The following is not a pulverized fuel burner.
(A) Tangential burner
(B) Turbulent burner
© Cyclone burner
(D) Radial burner
(Ans: D)
15-In which of the following type of burner, liquid fuel is raised by capillary action?
(A) Wick burners
(B) Re-circulating burner
© Rotating cup burner
(D) All of the above
(Ans: A)
16-A Fluidised bed may be defined as the bed of ______ particles
(A) Liquid
(B) Solid
© Both (A) and (B)
(D) None of the above
(Ans: B)
17-The following is (are) ash handling system(s)
(A) Hydraulic system
(B) Pneumatic system
© Steam jet system
(D) All of the above
(Ans: D)
18-The following is dry type dust collectors
(A) Spray type
(B) Packed type
© Impingement type
(D) cyclone separator
(Ans: D)
19-The major constituent of fly ash is
(A) Silicon dioxide
(B) Aluminium oxide
© Calcium oxide
(D) Magnesium oxide
(Ans: A)
20-The draught produced by the chimney if due to the ____ difference between the column of hot gases inside the chimney and the cold air outside.
(A) Temperature
(B) Potential
© Density
(D) None of the above
(Ans: C)