Steam Power Plant MCQ – Steam/Coal Power Plant

Steam Power Plant MCQ (multiple choice) Electrical Engineering MCQ Questions for EE exams, job interviews, and concept building.

A steam power station produces electricity from the heat energy of coal combustion. The working principle of a steam power station is based on the Rankine cycle.

Coal is pulverized to

Coal is pulverized to:

  1. Reduce the pressure of feed water
  2. Decrease surface exposure
  3. Increase surface exposure
  4. None of these

Correct answer: 3. Increase surface exposure


Working of Steam power station is based on

Working of Steam power station is based on:

  1. Thomsan Cycle
  2. Rankine cycle
  3. Raphson method
  4. Thevenin law

Correct answer: 2. Rankine cycle


Overall efficiency of steam power station is

Overall efficiency of steam power station is:

  1. Less than 50%
  2. 50-60%
  3. 60-64%
  4. More than 64%

Correct answer: 1. Less than 50%


Economizer in steam power station

Economizer in steam power station:

  1. Heats feed water
  2. Generates flue gases
  3. Adds moisture
  4. Is used for burning coal

Correct answer: 1. Heats feed water


In steam power plant the net change in energy is

In steam power plant the net change in energy is:

  1. Zero
  2. Positive
  3. Negative
  4. Infinite

Correct answer: 1. Zero

Steam Power Plant comparison with Hydro

Compared to Hydroelectric Power plant the running cost of a steam power plant is:

  1. High
  2. Low

Correct answer: 1. High

The running cost of steam power plant is more than hydro power plant.

The working fluid in liquid phase of a steam power plant is

The working fluid in liquid phase of a steam power plant is:

  1. Water
  2. Graphite
  3. Steam
  4. Flue gases

Correct answer: 1. Water

Which of the following is the correct statement about water tube boilers

Which of following is correct statement about water tube boilers:

  1. Water flows through the tube
  2. Water surrounds the hot tubes
  3. None of these

Correct answer: 1. Water flows through the tube

Location of Convection Superheater in Steam Plant

The convection superheater is placed in:

  1. Furnace between water walls
  2. Boiler tube bank

Correct answer: 2. Boiler tube bank

Which type of air-heater comprises of a slow moving drum

Which type of air-heater comprises of a slow-moving drum:

  1. Recuprative type
  2. Regenerative type
  3. Both of these
  4. None of these

Correct answer: 2. Regenerative type

More MCQ on Steam Power Plant

  1. A Steam Power Station has an annual load factor of 45%. If the maximum demand is 25000 kW, then units generated in annum are
  2. In a Steam Power Station find the calorific value of coal when 0.4 kg coal is burnt per kWh of generated electricity. The overall efficiency of a steam power plant is 28%
  3. Major heat losses in steam power station occur in which part
  4. The thermal efficiency of a Steam power plant is 33%, while electrical efficiency is 94%. The overall efficiency is
  5. The turbine and thermal efficiencies of a power plant are 92% and 68% respectively. The boiler efficiency is

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