POWER PLANTS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

POWER PLANTS MULTIPLE

CHOICE QUESTIONS (MCQ)

WITH ANSWERS

 

MCQ increases the level of understanding

and the degree of clarity. All types of

power plants produce electricity for

industry. Power plants are thermal and

nuclear types. These use solid, liquid

and gaseous fuels. All power plants have

harmful effect on environment.

1. Power plants mean

(a)        Producing power

(b)        Consuming power

(c)        Both (a) & (b)

(d)        None

ANS: (a)

2. A power plant generates

(a)        Steam

(b)        Heat

(c)        Electricity

(d)        None

ANS: (c)

3. Types of thermal power plants is

(a)        Coal power plants

(b)        Nuclear power plants

(c)        Both (a) & (b)

(d)        None

ANS: (c

4. Nuclear power plants generate electricity using

(a)        Fission

(b)        Fusion

(c)        Nuclear reactor heat

(d)        None

ANS: (c)

5. Solar power plants generate electricity by using

(a)        Chemical cells

(b)        Semiconductor cells

(c)        Mechanical cells

(d)        None

ANS: (b)

6. Wind energy used in wind power plants is

(a)        Clean energy

(b)        Energy with dust

(c)        Boyh (a) & (b)

(d)        None

ANS: (a)

7. An automated power plant uses

(a)        Programmable Logic Controller (PLC)

(b)        Distributed control system (DCS)

(c)        PLC or DCS

(d)        None

ANS: (c)

8. Supervisory Control And Data Acquisition (SCADA) system in a power plant monitors and controls

(a)       Temperatures, speeds of pumps and motors

(b)         Open and close valves.

(c)        Both (a) & (b)

(d)        None

ANS: (c)

9. Types of power plants are

(a)        2

(b)        4

(c)        6

(d)        None

ANS: (b)

10. Power plants are

(a)        Hydroelectric & thermal

(b)        Solar & wind

(c)        Both (a) & (b)

(d)        None

ANS: (c)

11. A power plant converts which energy into electrical energy?

(a)        Chemical energy

(b)        Mechanical energy

(c)        Physical energy

(d)        None

ANS: (b)

12. Hydro power potential with volumetric flow Q is

(a)        ρgh

(b)        ρghQ²

(c)        ρhQ

(d)        None

ANS: (c)

13. The range of head for a low pressure turbine is

(a)        2-5 m

(b)        2-10 m

(c)        2-15 m

(d)        None

ANS: (c)

14. The range of head for a medium head turbine is

(a)        16-30 m

(b)        16-50 m

(c)        16-70 m

(d)        None

ANS: (c)

15. The range of head for a high head turbine is

(a)        71-400 m

(b)        71-500 m

(c)        71-300 m

(d)        None

ANS: (b)

16. In a hydro turbine, head available is converted into

(a)        Kinetic energy

(b)        Pressure energy

(c)        Kinetic and pressure energy

(d)        None

ANS: (c)

17. Types of hydro turbines as per water flow direction are

(a)        Radial and axial

(b)        Tangential

(c)        Both (a) & (b)

(d)        None

ANS: (c)

18. The range of head and velocity for a Kaplan turbine is

(a)        30-70 m and 100-300 m/s

(b)        30-70 m and 300-1000 m/s

(c)        30-50 m and 300-1000 m/s

(d)        None

ANS: (b)

19. The range of head and velocity for a Francis turbine is

(a)        40-300 m and 100-300 m/s

(b)        40-400 m and 300-1000 m/s

(c)        40-400 m and 60-300 m/s

(d)        None

ANS: (c)

20. The range of head and velocity for a Pelton turbine is

(a)  < 100 m and 10-50m/s

(b)  >400 m and 30-100 m/s

(c)        < 300 m and 10-50 m/s

(d)        None

ANS: (b)

21. A power plant generates electricity for

(a)        Industry

(b)        Domestic

(c)        Both (a) & (b)

(d)        None

ANS: (a)

22. The first power plant was invented by

(a)        William, Lord Armstrong

(b)         Zénobe Gramme

(c)        Both (a) & (b)

(d)        None

ANS: (b)

23. First hydroelectric power station was designed & built by

(a)        William, Lord Armstrong

(b)       Zenobe Gramme

(c)        Both (a) & (b)

(d)        None

ANS: (a)

24. The initial cost of thermal power plant vs hydroelectric power plant is

(a)      Less

(b)     More

(c)      Equal

(d)     None

ANS: (a)

25. The space requirement of thermal power plant vs hydroelectric power plant is

(a)      Less

(b)     More

(c)      Equal

(d)     None

ANS: (a)

26. The fuel cost of thermal power plant is

(a)      Less

(b)     More

(c)      Equal

(d)     None

ANS: (a)

27. The cost of electricity generation through thermal power plant vs hydroelectric power plant is

(a)      Less

(b)     More

(c)      Equal

(d)     None

ANS: (a)

28. The thermal power plants are

(a)      Non ecofriendly

(b)     Ecofriendly

(c)      Both (a) & (b)

(d)     None

ANS: (a)

29. The efficiency of thermal power plants vs nuclear power plants is

(a)      Equal

(b)     More

(c)      Less

(d)     None

ANS: (c)

30. Thermal power plants requires water in

(a)      Small quantity

(b)     Large quantity

(c)      Medium quantity

(d)     None

ANS: (b)

31. Time required for erection and to put into action a thermal power plant is

(a)      Small

(b)     Large

(c)      In between small and large

(d)     None

ANS: (b)

32. The impulse turbine rotor starts rotating due to

(a)      Change in velocity

(b)     Change in acceleration

(c)      Change in momentum

(d)     None

ANS: (c)

33. In an Impulse turbine, there are

(a)      Moving nozzles

(b)     Fixed nozzles

(c)      Both (a) & (b)

(d)     None

ANS: (b)

34. In an Reaction turbine, there are

(a)      Moving nozzles

(b)     Fixed nozzles

(c)      Both (a) & (b)

(d)     None

ANS: (d)

35. In a Reaction turbine, there is a pressure drop in

(a)      Fixed blades

(b)     Moving blades

(c)      Both (a) & (b)

(d)     None

ANS: (c)

36. In an Impulse turbine, pressure drop is in

(a)      Fixed blades

(b)     Nozzles

(c)      Both (a) & (b)

(d)     None

ANS: (b)

37. Water in a nuclear reactor is heated by

(a)      Fission

(b)     Fusion

(c)      Both Fission & Fusion

(d)     None

ANS: (a)

38. Nuclear power plants vs Coal thermal power plants are

(a)      Unreliable

(b)     Reliable

(c)      Both (a) & (b)

(d)     None

ANS: (b)

39. Nuclear fuel is

(a)      Energy dense

(b)     Energy less

(c)      Both (a) & (b)

(d)     None

ANS: (a)

40. Types of power stations are

(a)      Central power station

(b)     Captive power station

(c)      Both (a) & (b)

(d)     None

ANS: (c)

41. Central power station is meant for

(a)      Large number of domestic users

(b)     Big number of industries

(c)      Small number of industries & domestic consumers

(d)     None

ANS: (b)

42. Captive power station is for a

(a)      Domestic use

(b)     Certain Industry own use

(c)      Both (a) & (b)

(d)     None

ANS: (b)

43. Thermal efficiency of a power plant is

(a)      Net work /Total work

(b)     Net work/ Total heat input

(c)      Pump work / Turbine work

(d)     None

ANS: (b)

44. A Geothermal power plant uses steam form a

(a)      Boiler

(b)     Hot underground rocks

(c)      Both (a) & (b)

(d)     None

ANS: (b)

45. Work ratio of a power plant is

(a)      Net work /Total work

(b)     Net work/ Total heat input

(c)      Pump work / Turbine work

(d)     None

ANS: (a)

46. Back Work ratio is

(a)      Net work /Total work

(b)     Net work/ Total heat input

(c)      Pump work / Turbine work

(d)     None

ANS: (c)

47. The cycle used in steam power plants is

(a)      Carnot Cycle

(b)     Rankine Cycle

(c)      Modified Rankine Cycle

(d)     None

ANS: (c)

48. The thermal efficiency of steam power plants is increased by

(a)      Reheat & regeneration

(b)     Regeneration & preheating

(c)      Reheat, regeneration & preheating

(d)     None

ANS: (c)

49. Fuels used in a nuclear power plant are

(a)      U₂₃₀ & Th₂₃₀

(b)     U₂₃₅ & Th ₂₃₂

(c)      U₂₄₀ & Th ₂₄₀

(d)     None

ANS: (b)

50. Ocean Thermal Energy Conversion system uses a minimum temperature difference of

(a)      20⁰C

(b)     25⁰C

(c)      30⁰C

(d)     None

ANS: (b)

51. Energy released by nuclear fuel vs coal is

(a)      5000 times

(b)     10000 times

(c)      20000 times

(d)     None

ANS: (c)

52. The fuel which damages the environment worst is

(a)      Fuel oil

(b)     Gas fuel

(c)      Coal

(d)     None

ANS: (c)

53. Do nuclear fuels directly generate Carbon Dioxide?

(a)      Yes

(b)     No

(c)      Can’t say

(d)     None

ANS: (b)

54. Do nuclear fuels indirectly produce Carbon Dioxide?

(a)      Yes

(b)     No

(c)      Can’t say

(d)     None

ANS: (a)

55. Manufacturing of solar panels for solar power plants is a

(a)      Environmental friendly

(b)     Dangerous to the environment

(c)      Both (a) & (b)

(d)     None

ANS: (b)

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