In every examination, Multiple-Choice Questions have a vital role. If you have a great collection of MCQ questions, you can increase your score easily. In this article, I will keep 40 numbers of Multiple-Choice Questions on Boilers that will help you in examinations and also in viva.
In the last section, there will be a Quiz test of 10 marks on Boilers. So, a total of 50 number questions are there.
At the end of this article, you will also find a PDF downloadable button from where you can download the PDF format of this MCQ sheet. So now let’s start the objective-type questions or viva questions.

MCQ questions or Viva Questions on Boilers
- Which one of the following is the water tube boiler?
- Lancashire boiler
- Locomotive boiler
- Cornish boiler
- Babcock and Wilcox boiler ✔
- Which one of the following is not a water tube boiler?
- Babcock and Wilcox boiler
- Stirling boiler
- Cornish boiler ✔
- La-Mont boiler
- Which one of the following boiler is a fire tube boiler?
- Benson boiler
- Yarrow boiler
- Loeffler boiler
- Scotch marine boiler ✔
- Which one of the following boiler is not a fire tube boiler?
- Benson boiler ✔
- Velcon boiler
- Locomotive boiler
- Cochran boiler
- Which one of the following is a horizontal boiler?
- Cochran boiler
- Lancashire boiler ✔
- Both 1 and 2
- None of these
- Which one of the following is a vertical boiler?
- Cochran boiler ✔
- Locomotive boiler
- Lancashire boiler
- Babcock and Wilcox boiler
- Which one of the following is not a high pressure boiler?
- La-mont boiler
- Benson boiler
- Locomotive boiler ✔
- Velcon boiler
- How many flue tubes are there in Cornish boiler?
- 1 ✔
- 2
- 3
- 4
- How many flue tubes are there in Lancashire boiler?
- 1
- 2 ✔
- 3
- 4
- Which one of the following statement is not true?
- Capacity of Cornish boiler is lower than that of Lancashire boiler ✔
- Capacity of Cornish boiler is higher than that of Lancashire boiler.
- Water tube boiler generates steam at pressure
- Upto 65 bar
- Upto 165 bar ✔
- Uptob 25 bar
- Upto 80 bar
- Fire tube boiler generates steam at pressure
- Upto 65 bar
- Upto 165 bar
- Uptob 25 bar ✔
- Upto 80 bar
- Overall efficiency with economiser of a water tube boiler is
- 90% ✔
- 75%
- 65%
- 55%
- Overall efficiency of a fire tube boiler is
- 90%
- 75% ✔
- 65%
- 55%
- The rate of generation of steam in a water tube boiler is
- 9 tonnes per hour
- 90 tonnes per hour
- 250 tonnes per hour
- 450 tonnes per hour ✔
- The rate of generation of steam in a water tube boiler is
- 9 tonnes per hour ✔
- 90 tonnes per hour
- 250 tonnes per hour
- 450 tonnes per hour
- In a simple vertical boiler, the water tubes are:
- Vertical
- Horizontal
- Inclined ✔
- None of these
- The diameter of the flue tubes of a Lancashire boiler is ____times that of shell.
- 0.2
- 0.4 ✔
- 0.6
- 0.8
- The diameter of the flue tubes of a Cornish boiler is ____times that of shell.
- 0.2
- 0.4
- 0.6 ✔
- 0.8
- The locomotive boiler has____ numbers of fire tubes and ____ numbers of water tubes.
- 157,34 ✔
- 127,14
- 117,04
- 17,04
- Which type of boiler produce steam at high pressure?
- Fire tube boiler
- Water tube boiler ✔
- Which one of the following is an example of mounting?
- Water level indicator ✔
- Superheater
- Economizer
- None of these
- Which one of the following is an example of accessories?
- Water level indicator
- Safety valve
- Pressure gauge
- Superheater ✔
- Which one of the following ensures the safety of the boiler?
- Accessories
- Mountings ✔
- None of these
- Which one of the following enhances the efficiency of the boiler?
- Accessories ✔
- Mountings
- None of these
- The function of the blow off cock valve is
- To control the flow of steam
- To regulate the supply of water
- To put off the fire when the level of water falls to an unsafe level
- To empty the boiler whenever required ✔
- The function of the steam stop valve is
- To control the flow of steam ✔
- To regulate the supply of water
- To put off the fire when the level of water falls to an unsafe level
- To empty the boiler whenever required
- The function of the feed check valve is
- To control the flow of steam
- To regulate the supply of water ✔
- To put off the fire when the level of water falls to an unsafe level
- To empty the boiler whenever required
- The function of the fusible plug is
- To control the flow of steam
- To regulate the supply of water
- To put off the fire when the level of water falls to an unsafe level ✔
- To empty the boiler whenever required
- Due to use Air Pre-heater, the changes in efficiency is:
- 2% increase ✔
- 2% decrease
- 20% increase
- 20% decrease
- The heat losses in a boiler are:
- Heat lost in dry flue gases
- Heat lost in moisture present in the fuel
- Heat lost due to unburnt carbon
- All of these ✔
- Equivalent evaporation is:
- (total heat required to evaporate feed water)/2275
- (total heat required to evaporate feed water)/2257 ✔
- (total heat required to evaporate feed water)/7522
- (total heat required to evaporate feed water)/5722
- The factor of evaporation is:
- (h-hf)/2275
- (h-hf)/7522
- (h-hf)/7252
- (h-hf)/2257 ✔
- In forced draught boiler, the fan is placed:
- After the fire gate
- Before the fire gate ✔
- None of these
- In an induced draught boiler, the fan is placed:
- After the fire gate ✔
- Before the fire gate
- None of these
- In which type of boiler, pressure inside the furnace is above the atmospheric pressure?
- Induced draught boiler
- Forced draught boiler ✔
- None of these.
- In which type of boiler, pressure inside the furnace is below the atmospheric pressure?
- Induced draught boiler ✔
- Forced draught boiler
- None of these.
- Which type of boiler requires more power to run?
- Induced draught boiler ✔
- Forced draught boiler
- None of these.
- Which type of boiler requires less power to run?
- Induced draught boiler
- Forced draught boiler ✔
- None of these.
- The velocity of the flue gases through the chimney under the static draught of H’ is:
- 2gH’
- Sqrt of (2gH’) ✔
- 2g/H’
- H’/2g
Quiz on Boilers
Here is the quiz for you:
Conclusion
I hope that the Multiple-Choice Questions on Boilers will help you in your college/university examinations and different types of competitive examinations. I will be more encouraged if I get feedback from your end. Please don’t forget to give the feedback by writing in the comment box. Good Luck!