200 Important Electrical Power Generation MCQ Question and Answer | PDF Free Download
1.Ash content of coal can be reduced by
- APulverising
- BWashing
- CSlow burning
- DMixing with high grade coal
2.Solvent refined coal has low percentage of
- AImpurities
- BSulphur
- CAsh
- DAll of the above
3.Presence of sulphur content in coal will cause
- ASpontaneous combustion during coal storage and air heater corroding
- BClinkering and slagging
- CFacilitating ash precipitation
- DAll of the above
4.Sulphur content of liquid fuels assumes importance from the point of view of
- AFiring rate
- BHeating rate
- C Corrosion
- DEfficiency
5.The Chemical composition of coal is given by
- AUltimate analysis
- BProximate analysis
- CGross analysis
- DAny of the above
6.In a steam power plant, the coal is carried from storage to boiler generally by
- ATrolleys
- BV-belts
- CBuckets
- DManually
7.Belt conveyor can be used to transport coal at inclination upto
- A75 degree
- B60 degree
- C30 degree
- D15 degree
8.The maximum length of a screw conveyor is about
- A30 Metres
- B40 Metres
- C60 Metres
- D100 Metres
9.In small power plants, coal is unloaded by means of
- ABelt conveyors
- BCoal accelerators
- CLift trucks
- DAll of the above
10.Pulverized coal is
- ANon-smoking coal
- BCoal free from ash
- CCoal broken into fine particles
- DCoal which burns for long time
12.Pulverized fuel is used for
- ABetter burning
- BIncreased calorific value of coal
- CLess radiation loss
- DMedium size units
13.The advantages of using pulverized fuel are
- AHigher boiler efficiency, low air requirement and low fan power
- BEasy and complete combustion
- CFast response to load changes and low banking losses
- DAll of the above
14.Fly ash generally results from
- AFluidized bed boilers
- BPulverised coal boilers
- CDiesel engines
- DGas turbines
15.Dust can be separated from gas by
- AImpingement upon small baffles
- BSudden velocity decrease owing to enlargement
- CAbrupt changes of flow direction
- DAny of the above
16.Air pollution due to smoke around a thermal power station can be reduced by installing
- AInduced draft fans
- BSuper heater
- CEconomizer
- DElectrostatic precipitator
17.The electrostatic precipitator is used in a coal-fired thermal power station to
- ARemove dust particles settling on the bus bar conductors in the station switchyard
- BCondense steam by electrostatic means
- CKeep the air heaters clean
- DCollect the dust particles from the flue gases
18.Electrostatic precipitator is installed between
- AInduced fan and chimney
- BAir preheater and induced fan
- CEconomiser and air preheater
- DBoiler furnace and economiser
19.The draught produced by a chimney is called the
- AForced draught
- BInduced draught
- CNatural draught
- DBalanced draught
20.The draught produced by steel chimney in comparison to that produced by brick chimney, for the same height, is
- AMore
- BLess
- CThe same
- DUnpredictable