Multiple-Choice Questions or Objective Type Questions on Thermal Power Plant Engineering [PDF Included]

Are you making yourself ready for the upcoming examinations? Recently, all the examinations are based on multiple-choice questions. In this article, I will show you some Multiple-Choice Questions on Thermal Power Plant Engineering. It will help you in examinations and also in viva.

In the last section, there will be a Quiz test of 10 marks on the Thermal Power Plant. Appear for the test and fall in love with studying a lot of objective-type questions.

To download this MCQ sheet, you have to reach the end of this page. There, you will find a PDF downloadable button. Click here and download the PDF version of this sheet.

So now let’s start the objective-type questions or viva questions.

MCQ questions or Viva Questions on Thermal Power Plant Engineering

•  How much efficiency a typical thermal power plant has?

1. 15-20%
2. 35-38%
3. 50-55%
4. 60-63%

Ans: (2)

• In a thermal power plant, ____ energy is converted into ____ energy

1. heat, electric
2. electric, heat
3. magnetic, kinetic
4. kinetic, magnetic

Ans: (1)

• Which of the following are the components of a thermal power plant?

1. Boiler and Turbine
2. Turbine and Condenser
3. Condenser and Cooling tower
4. All of these

Ans: (4)

• A thermal power plant works on the ____ cycle.

1. Carnot
2. Diesel
3. Rankine
4. Petrol

Ans: (3)

• Inputs to a thermal power plant are:

1. Fuel, air, and water
2. Electricity, magnetic field, steam
3. Ash, steam, flue gas
4. None of these

Ans: (1)

• If you increase the temperature of the air that enters the boiler with the help of steam, the efficiency of the power plant will ____.

1. decrease
2. remain unchanged
3. increase
4. can’t say

Ans: (3)

• The purpose of the ESP in a thermal power plant is ____.

1. to eliminate the particulate matter
2. to add moisture
3. to separate moisture from the steam
4. to reduce the temperature of the flue gas

Ans: (1)

• Which of the following components help to increase the efficiency of a boiler?

1. Safety valve
2. Water level indicator
3. Steam stop valve
4. Economizer

Ans: (4)

• Which of the following is the World’s largest coal-fired thermal power plant?

1. Vindhyachal Thermal Power Station
2. Taichung Power Plant
3. Three Gorges Dam
4. None of the above

Ans: (2)

• Which of the following is the largest coal-fired thermal power plant in India?

1. Vindhyachal Thermal Power Station
2. Taichung Power Plant
3. Three Gorges Dam
4. None of the above

Ans: (1)

• What is the power generating capacity of the largest coal-fired power plant in the world?

1. 2788 MW
2. 2760 MW
3. 4760 MW
4. 5788 MW

Ans: (4)

• What is the power generating capacity of the largest coal-fired power plant in India?

1. 2788 MW
2. 2760 MW
3. 4760 MW
4. 5788 MW

Ans: (3)

• In the steam, the amount of water present is 15% by mass. What will be the dryness fraction of the steam?

1. 15
2. 0.15
3. 85
4. 0.85

Ans: (4)

• In which season, the power plant works more efficiently?

1. Summer
2. Monsoon
3. Winter
4. Can’t say

Ans: (3)

• Which power plant works most effectively?

1. Nuclear power plant
2. Thermal power plant
3. Hydro-electric power plant
4. None of these

Ans: (3)

• The unit of the efficiency is ____.

1. Joule
2. Joule/sec
3. Newton-metre
4. Nil. It is dimensionless

Ans: (4)

• The efficiency of any cycle can be expressed by ____.

1. Heat input/ work done
2. Work done/heat supplied
3. Heat output/work done
4. None of these

Ans: (2)

• The Carnot cycle is the ideal version of ____.

1. Rankine cycle
2. Otto cycle
3. Diesel cycle
4. None of these

Ans: (1)

• The Carnot cycle consists of ____.

1. One number isentropic compression, one number isentropic expansion, two numbers isothermal expansion
2. Two numbers isentropic compression, one isothermal expansion, one isothermal compression
3. One number isentropic compression, one isentropic expansion, one isothermal expansion, one isothermal compression
4. Two numbers isentropic expansion, one isothermal expansion, one isothermal compression

Ans: (3)

• The efficiency of a Carnot cycle is ____

1. 100%
2. 90%
3. 50%
4. Can’t say

Ans: (1)

• If you superheat the steam, the efficiency of the power plant will ____.

1. Decrease
2. Increase
3. Remain same
4. Can’t say

Ans: (2)

• How can you increase the efficiency of the Boiler?

1. By heating the water before it enters the boiler with the help of an economizer
2. By heating the air before it enters the boiler with the help of an air-preheater.
3. Both (2) and (3)
4. None of these

Ans: (3)

• From where you should take the heat to increase the temperature of the air in the air preheater?

1. Steam
2. Water
3. Ash
4. Flue gas

Ans: (4)

• From where you should take the heat to increase the temperature of water an economizer?

1. Steam
2. Water
3. Ash
4. Flue gas

Ans: (4)

• Air-preheaters should be located in ____.

1. Exhaust flue gas path, before the chimney
2. Exhaust flue gas path, after the chimney
3. Within the furnace, in the emitting flue gas path
4. In the steam path

Ans: (1)

• Economizers should be located in ____.

1. Exhaust flue gas path, before the chimney
2. Exhaust flue gas path, after the chimney
3. Within the furnace, entrance region of the boiler
4. In the steam path

Ans: (1)

• The purpose of installing the Air pre-heater and Economizer is ____.

1. To increase the temperature of the steam
2. To superheat the steam
3. To remove the particulate matters from the flue gas
4. To extract the heat from the flue gas

Ans: (4)

• The circulation ratio in a boiler can be defined as ____.

1. Mass of steam entering the boiler/mass of steam coming out of the boiler
2. Mass of steam and water mixture entering the boiler/mass of steam coming out of the boiler
3. Mass of steam coming out of the boiler/mass of steam entering the boiler
4. None of these

Ans: (3)

• In which of the boiler, pressure, and temperature are high?

1. Drum boiler
2. Once-through boiler
3. None of these

Ans: (2)

• Which type of boiler gives the highest efficiency?

1. Oil driven
2. Gas driven
3. Conventional
4. None of these

Ans: (3)

• Which of the following boiler is a once-through boiler?

1. Benson boiler
2. La Mont boiler
3. Both 1 and 2
4. None of these

Ans: (1)

• On which of the following parameter, the height of the chimney is dependent?

1. The pollution in the environment
2. The amount of flue gas generated
3. The draught that is to be produced
4. None of these

Ans: (3)

• Which of the following power station is not efficient compared to that of the other power stations.

1. Hydroelectric power station
2. Nuclear power station
3. Thermal power station

Ans: (3)

• Which of the following plant requires more space compared to that of the other plants?

1. Nuclear power plant
2. Hydroelectric power plant
3. Wind plant
4. Thermal power plant

Ans: (4)

• The purpose of the non-return valve is:

1. To ensure that there is no backflow.
2. To regulate the flow
3. To isolate the flow completely.
4. None of these

Ans: (1)

• The circulation ratio in a natural circulation boiler is ____.

1. greater than 1
2. less than 1
3. can’t say

Ans: (1)

Quiz on Thermal Power Plant

Here is the quiz for you:

Conclusion

I hope that the Multiple-Choice Questions on Thermal Power Plant will help you in your college/university examinations and different types of competitive examinations. Even, this will help you in clearing the job interviews in Mechanical Engineering. Further, if you have any queries, you can write to us in the comment box so that I can clarify. Best wishes!