[MCQ Set 1]Electrical Power Generation, Transmission And Distribution MCQ Questions|EEE Made Easy

Contents

GENERATION TRANSMISSION AND DISTRIBUTION MCQ

1.The primary source of energy is .

A. Coal oil and uranium B. Hydrogen, oxygen and water C. Wind, biomass and geothermal D. None of the above

2.In fuel cell, the energy is converted into electrical energy.

A. Mechanical B. Chemical C. Heat D. Sound

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3.Which one of the following is not a renewable energy sources?

A. Solar energy B. Wind energy C. Tidal energy D. Nuclear energy 4.The secondary sources of energy are _.

A. Solar, wind and water B. Coil, oil and uranium C. Either (A) or (B) D. Neither (A) or (B

5.In India coal resourses are rich in .

A. UP B. Tamil Nadu C. Rajasthan D. Bihar

6.A steam power station requires space .

A. Equal to diesel power station B. More than diesel power station C. Less than diesel power station D. None of the above

7.Steam power plant converts .

A. Heat energy of coal into steam energy B. Heat energy of coal into electrical energy C. Electrical energy into steam energy D. None of the above

8.The turbine used in thermal power plants is .

A. Water turbine B. Steam turbine C. Pelton wheel D. Kaplan

9.The steam turbine converts _.

A. Steam energy to mechanical energy B. Steam energy into electrical energy C. Steam energy into coal energy D. Electrical energy into steam energy

10.The input to the steam turbine is .

A. Super-heated steam B. Wet steam C. Low pressure temperature D. None of these

11.The output from the steam turbine is coupled to _.

A. Condenser B. Bus bar C. Coal inputD. Alternator

12.Steam is generated in _.

A. Boiler B. Condenser C. Economizer D. Super heater

13.The thermal power station causes _.

A. Water pollution B. Air pollution C. Both (A) and (B) D. None of the above

14.Modern steam plants works on which of the following cycles?

A. Carnot cycle B. Rankine cycle C. Otto cycle D. Bell-coleman cycle

15.What would be the most important factor under consideration for the site selection of a thermal plant?

A. Availability of fuel B. Availability of water C. Distance from the populated area D. Cost and the type of land

16.The amount of heat produced by the complete combustion of a unit weight of fuel is known as .
A. Energy B. Power C. Calorific value D. None of these

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17.In case of solid fuels, the caloric value is expressed as .

A. k.cal/litre B. k.cal/kg C. litre/k.cal D. kg/k.cal

18.The calorific value of lignite in k.cal/kg .

A. 5000 B. 7600 C. 8500 D. 11000

19.The calorific value of bituminous coal in k.cal/kg .

A. 5000 B. 7600 C. 8500 D. 11000 20.Pulverizations of coal mean .

A. Burning the coal B. Crushing the coal C. Mixing coal with oil D. None of these

21.Coal used for thermal power stations is also called as

A. Char coal B. Coke C. Steam coal D. Soft coal

22.One kWh is equal to _.

A. k.cal B. 860 k.cal C. 760 k.cal D. 660 k.cal

23.The function of condenser is to .

A. Cool the steam B. Heat the steam C. Supply cool water to turbine D. None of the above
24.A low grade coal has .

A. High calorific value B. Low ash content C. No heat content D. High ash content

25.Pulverisation of coal is done for _.

A. Easy transportation B. Reducing burning time C. Evaporating moisture D. Easy measuring the quantity and weight

26.Cooling towers are used if .

A. Pollution is to be avoided B. Steam is not be condensed C. Efficiency is to be improved D. Water in large quantity is not available

27.Which of the following enters the super heater of a boiler?

A. Cold water B. Hot water C. Wet steam D. Super-heated steam

28.Which part of the boiler will have lightest pressure?

A. Economizer B. Super heater C. Steam drum D. Feed water

29.The efficiency of chimney is approximately _.

A. 80% B. 40% C. 20% D. 0.25% 30.In jet type condenser _.

A. Cooling water passes through tubes and steam surrounds them B. Steam passes through tubes and cooling water surrounds them C. Steam and cooling water mix D. Steam and cooling water do not mix

31.In a surface condenser if air is removed there is .

A. Fall in absolute pressure maintained in condenser B. Rise in absolute pressure maintained in condenser C. No change in absolute pressure in the condenser D. Rise in temperature of condensed steam

32.Evaporative type of condenser has _.

A. Steam in pipes surrounded by water B. Water in pipes surrounded by steam C. Either (A) or (B) D. None of the above

33.The average ash content in Indian coals is about _. A. 5% B. 10% C. 15% D. 20%

34.Economisers improve boiler efficiency by .

A. 1 to 5% B. 4 to 10% C. 10 to 12% D. 50 to 60%

35.Primary air is that air which is used to .

A. Reduce the flame length B. Increases the flame length C. Transport and dry the coal D. Provide air around burners for getting optimum combustion

36.Secondary air is the air used to _.

A. Reduce the flame length B. Increase the flame length C. Transport and dry the coal D. Provide air round burners for getting optimum combustion

37.Pulverized fuel is used for _.

A. Saving fuel B. Better burning C. Obtaining more heat D. All of the above

38.Which of the following coals has the highest calorific value? A. Peat B. Lignite C. Bituminous D. Anthracite coal

39.The height of chimney in a steam power plant is governed by .

A. Flue gases quantity B. The drought to be produced C. Control of pollution D. None of the above

40.Fuel gases are produced in .

A. Chimney B. Boiler C. Coal handling plant D. Ash handling plant

41.Flue gases are .

A. Hot gases B. Cool gases C. Harmful gases D. None of these

42.Air pre heater in a steam power plant .

A. Recovers the heat from the flue gases leaving the economizer B. Improves the combustion rate C. Raise the temperature of furnace gases D. All of the above

43.Which part of the boiler will be at height pressure? A. Economizer B. Super heater C. Steam drum D. Feed water

44.Cooling tower in thermal power plants are needed if . A. Pollution is to be avoided B. Steam not to be condensed C. Efficiency is to be improved D. Water in large quantities is not available

45.The modern steam turbines are . A. Reaction type B. Impulse type C. Impulse-reaction type D. None of these

46.The overall efficiency of thermal power plant is equal to .

A. Rankine cycle efficiency B. Cannot cycle efficiency C. Regenerated cycle efficiency x generator efficiency D. Boiler efficiency x turbine efficiency x generator efficiency

47.The overall efficiency of the thermal plants is .

A. Less than 30% B. Between 30% to 50% C. Between 50 to 80%D. More than 80%

48.Reheat cycle in steam power plant is used to .

A. Utilise heat of flue gases B. Increase thermal efficiency C. Improve condenser performance D. Reduce loss of heat

49.The overall efficiency of a boiler in a thermal power plant is of the order of .

A. 10% B. 25-30% C. 40-50% D. 70-80%

50.Electro static precipitator is installed between _.

A. Coal banker and boiler B. Boiler furnace and chimney C. Economizer and air heater D. Condenser and economizer

Answer Key

1-A 2-B 3-D 4-A 5-D 6-B 7-A 8- B 9-A 10-A 11-D 12-A 13-B 14- B 15-B 16-C 17-B 18-A 19-B 20-B 21-C 22-B 23-A 24-A 25-B 26-D 27-C 28-B 29-D 30-D 31-A 32- A 33-D 34-B 35-C 36-D 37-B 38-D 39-B 40-B 41-A 42-D 43- B 44-D 45-A 46-D 47-A 48-B 49- D 50- B