Electrical Power Generation MCQs Part 1

a. The unconventional source of electrical power generation is:

  1. Water
  2. Nuclear
  3. Thermal
  4. Tidal

Correct answer: 4. Tidal

b. The structure which protects the conduit of the dam against the abnormal pressure of water:

  1. Penstock
  2. Surge tank
  3. Reservoir
  4. Value house

Correct answer: 2. Surge tank

c. Statement: Open conduits in dams don’t require surge tanks.

Argument: No problem of pressure exists in case of open conduits.

  1. The statement is correct and argument supports it
  2. The statement is incorrect because argument opposes it
  3. Both statement and argument are incorrect
  4. Statement and argument don’t fit in the context

Correct answer: 1. The statement is correct and argument supports it

d. The rotor of diesel engine alternator is ___________:

  1. Salient type
  2. Non-salient type

Correct answer: 1. Salient type

e. The hydroelectric power plant is constructed in:

  1. Hilly areas
  2. Urban areas
  3. Deserts
  4. Swamps

Correct answer: 1. Hilly areas

f. The term pulverized coal means:

  1. The coal which is larger in size
  2. Coal broke down into small pieces
  3. Coal which is dark gray in color
  4. White coal

Correct answer: 2. Coal broke down into small pieces

g. At present _______________ is the largest source of power generation:

  1. Coal
  2. Nuclear
  3. Hydroelectric
  4. Solar

Correct answer: 1. Coal

h. The steam exiting the boiler of the plant is at ____________ and _____________:

  1. Low temperature, low pressure
  2. Low temperature, high pressure
  3. High temperature, high pressure
  4. High temperature, low pressure

Correct answer: 3. High temperature, high pressure

i. A two pole generator in 50 Hz grid should be turned at:

  1. 1500 RPM
  2. 3000 RPM
  3. 6000 RPM
  4. 9000 RPM

Correct answer: 1. 3000 RPM

Explanation: Speed = 120 * f / P

Speed = 120 * 50 / 2 = 3000 RPM

j. For power generation at same frequency a 4 pole generator requires to turn ___________ 2 pole generator:

  1. Slower than
  2. Faster than
  3. At similar speed as
  4. None of these

Correct answer: 1. Slower than


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