

InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
1. |
What is the main disadvantage of the nuclear weigher?(a) They are not mobile(b) Accuracy depends on speed of material(c) They are big in size, requires large amount of space(d) Consumes large amount of electricityThe question was asked in an internship interview.This is a very interesting question from Coal Weighing Methods in chapter Steam Power Plant of Energy Engineering |
Answer» The correct answer is (c) They are big in size, requires LARGE amount of space |
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2. |
What is the purpose of bucket elevators in coal handling?(a) Used to move coal horizontally(b) Used to lift coal vertically(c) Used to separate the crushed coal and pulverized coal(d) Used to pour the coal vertically at right angles into furnaceThe question was asked in quiz.The origin of the question is Stages of Coal Handling topic in division Steam Power Plant of Energy Engineering |
Answer» The correct answer is (B) Used to lift coal vertically |
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3. |
How the oxidation of coal is eliminated?(a) By exposing it to the sunlight(b) By turning the entire coal heap upside down periodically(c) By circulating air uniformly(d) By burning coal at very high temperaturesThe question was asked during a job interview.My question is from Fuel Handling System, Storage of Coal in portion Steam Power Plant of Energy Engineering |
Answer» Correct ANSWER is (c) By circulating AIR uniformly |
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4. |
How does atomization of fuel occur in an atomizing burner of oil burner?(a) High pressure movement of fuels(b) By spraying the fuel at high pressure(c) By impinging two streams of fuel(d) By spark ignition methodThe question was asked in an interview for job.My question is from Fuel Burning Equipments in section Steam Power Plant of Energy Engineering |
Answer» The correct answer is (c) By impinging TWO streams of fuel |
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5. |
How is pulverization done in bowl mill?(a) By bowl and steel balls(b) By bowl and roller(c) By bowl and impact hammer(d) By bowl and batanThis question was addressed to me in final exam.My question is based upon Pulverised Mills in portion Steam Power Plant of Energy Engineering |
Answer» Right choice is (B) By bowl and roller |
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6. |
What decides the efficiency of pulverized fuel firing system?(a) Turbulence of air(b) Size of coal powder(c) Primary air(d) FeederThe question was asked in an internship interview.My doubt stems from Pulverised Fuel Burning topic in division Steam Power Plant of Energy Engineering |
Answer» Right choice is (b) Size of coal powder |
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7. |
Usage of highly preheated secondary air in pulverized fuel firing helps in ______(a) Heats fuel at pace(b) Takes less time to finish the process(c) Rapid flame propagation(d) Reduces the troubles and problems caused in the systemThe question was asked in exam.Question is taken from Pulverised Fuel Burning in division Steam Power Plant of Energy Engineering |
Answer» CORRECT answer is (C) Rapid flame propagation Best explanation: Using highly preheated secondary AIR helps in raid flame propagation. This also increases the ability of system to use HIGH combustion air temperature. The furnace MAKES it possible to complete combustion with minimum travel of flame travel since it is pre-heated. |
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8. |
Which device is used for feeding the fuel automatically to boiler or furnace in power plants?(a) Relay(b) Mechanical stoker(c) Master controller(d) Feed pumpThe question was posed to me during an interview.My question comes from Fuel Burning in section Steam Power Plant of Energy Engineering |
Answer» The correct option is (b) Mechanical stoker |
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9. |
Which type of furnace cannot be used in the modern era plants?(a) Hand fired furnace(b) Electric arc furnace(c) Solar furnace(d) Central warm air furnaceI got this question in a national level competition.My query is from Fuel Burning in division Steam Power Plant of Energy Engineering |
Answer» Correct choice is (a) Hand fired furnace |
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10. |
How much pounds of CO2 is emitted per million BTU (British thermal unit- common thermal unit) when coal is burnt?(a) 139(b) 117(c) 157(d) 205This question was addressed to me during an interview.I'm obligated to ask this question of Fuel Burning in section Steam Power Plant of Energy Engineering |
Answer» Right option is (d) 205 |
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11. |
What type of reaction is burning?(a) Endothermic reaction(b) Exothermic reaction(c) Synthesis reaction(d) Decomposition reactionI got this question during an online exam.I need to ask this question from Fuel Burning in section Steam Power Plant of Energy Engineering |
Answer» The correct answer is (b) EXOTHERMIC reaction |
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12. |
What does ESP stand for in dust collection?(a) Endothermic sensor plate(b) Extrasensory perception(c) Electrostatic precipitators(d) Electronic stability programI have been asked this question by my school teacher while I was bunking the class.I want to ask this question from Coal Weighing Methods in division Steam Power Plant of Energy Engineering |
Answer» Right answer is (c) Electrostatic precipitators |
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13. |
Why are heavy impurities provided in the process of ball and race mill?(a) To resist upward thrust caused by secondary air stream(b) To resist downward thrust caused by primary air stream(c) To resist upward thrust caused by primary air stream(d) To resist downward thrust caused by secondary air streamI had been asked this question during an online interview.I want to ask this question from Pulverised Mills topic in portion Steam Power Plant of Energy Engineering |
Answer» Right option is (c) To resist upward thrust CAUSED by PRIMARY air stream |
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14. |
What type of feeder is used to supply the coal in ball and race mill?(a) Ring main feeder(b) Parallel feeder(c) Radial feeder(d) Rotating table feederI have been asked this question during an interview.This interesting question is from Pulverised Mills topic in division Steam Power Plant of Energy Engineering |
Answer» The correct option is (d) Rotating table feeder |
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15. |
What is the advantage of breaking coal into smaller pieces in pulverized fuel handling?(a) Easy coal feeding(b) No clogging coal since they are in powder form(c) Exposes more surface of the coal(d) Increase in combustion rateI have been asked this question during an interview.Question is from Pulverised Fuel Burning in section Steam Power Plant of Energy Engineering |
Answer» | |
16. |
How much capacity of heat is possible to produce by the travelling grate stoker?(a) 80 * 10^6 kJ/m^2.hr(b) 40 * 10^6 kJ/m^2.hr(c) 25 * 10^6 kJ/m^2.hr(d) 65 * 10^6 kJ/m^2.hrI had been asked this question in final exam.My question is based upon Type of Stokers topic in portion Steam Power Plant of Energy Engineering |
Answer» Right option is (a) 80 * 10^6 kJ/m^2.hr |
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17. |
Proper regulation of Pulverized fuel results in _________(a) better fuel economy(b) high output work(c) efficient regulation of heat(d) proper combustionI had been asked this question by my college director while I was bunking the class.I need to ask this question from Pulverised Fuel Burning topic in chapter Steam Power Plant of Energy Engineering |
Answer» Correct option is (a) BETTER fuel economy |
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18. |
Where is the place at which the volatile matter and fine particles burnt in the spreader stoker?(a) Over the grate(b) In steam gauge(c) In the suspension(d) In the coal bedI had been asked this question in semester exam.My question comes from Type of Stokers topic in division Steam Power Plant of Energy Engineering |
Answer» The correct option is (C) In the suspension |
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19. |
Why does burnt gases with content of N2, CO2, H2, O2 and H2O re-enter the boiler in overfeed system?(a) To dismiss the ash content in the gases formed(b) Due to incomplete burning(c) For complete removal of moisture(d) To complete the burn the coalThe question was asked in final exam.Query is from Principle of Stoker topic in chapter Steam Power Plant of Energy Engineering |
Answer» Right answer is (B) Due to INCOMPLETE burning |
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20. |
Why is secondary air supplied in overfeed system?(a) To burn the unburnt gases(b) To maintain constant heat intensity(c) To completely remove water vapors formed due to primary air supply(d) To create distillation process for the raw coal suppliedThe question was asked during an interview.Origin of the question is Principle of Stoker in division Steam Power Plant of Energy Engineering |
Answer» Correct ANSWER is (a) To BURN the unburnt gases |
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21. |
How is volatile matter of raw coal is lost in the overfeed system?(a) Condensation(b) Distillation(c) Combustion(d) EvaporationI got this question in an online quiz.I'm obligated to ask this question of Principle of Stoker topic in section Steam Power Plant of Energy Engineering |
Answer» The correct choice is (b) Distillation |
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22. |
What is used in case, to throw coal into furnace that is set off far from the supply?(a) Speed convey belt(b) Bucket chain(c) Paddle(d) Steam jetThe question was posed to me in an international level competition.Origin of the question is Fuel Burning topic in chapter Steam Power Plant of Energy Engineering |
Answer» The CORRECT option is (d) Steam jet |
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23. |
What is the most important factor that is essential for economical working of a power plant?(a) Abundant fuel input(b) Rotational speed of turbines(c) Efficient transfer of heat energy to water(d) Proper maintenance Ash and other waste handling systemsI had been asked this question in a national level competition.This intriguing question comes from Fuel Burning in chapter Steam Power Plant of Energy Engineering |
Answer» Correct option is (c) EFFICIENT transfer of heat energy to water |
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24. |
What is in plant coal handling system?(a) Maintenance of coal during emergencies(b) Maintenance of coal inside the boiler(c) Maintenance of coal inside the power production area(d) Maintenance of coal while transporting/moving itThe question was posed to me during an interview.I need to ask this question from Fuel Handling System, Storage of Coal in chapter Steam Power Plant of Energy Engineering |
Answer» The correct answer is (c) Maintenance of coal inside the power production area |
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25. |
What types of rays does the nuclear weigher used to measure the weight?(a) Infrared rays(b) Ultraviolet rays(c) Gamma rays(d) X-ray wavesThe question was asked during a job interview.I'm obligated to ask this question of Coal Weighing Methods topic in division Steam Power Plant of Energy Engineering |
Answer» Right answer is (c) Gamma RAYS |
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26. |
Which coal burner is used to burn crushed coal instead of pulverized coal?(a) Cyclone burner(b) Tangential burner(c) Turbulent burner(d) Stream-line burnerI got this question in final exam.The doubt is from Fuel Burning Equipments topic in portion Steam Power Plant of Energy Engineering |
Answer» Right answer is (a) Cyclone burner |
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27. |
In which coal burners are fuel and air streams ejected in horizontal direction?(a) Tangential burner(b) Cyclone burner(c) Stream-line burner(d) Turbulent burnerI got this question in my homework.The doubt is from Fuel Burning Equipments topic in division Steam Power Plant of Energy Engineering |
Answer» The correct choice is (a) Tangential burner |
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28. |
The output of the mill can be controlled by the _________ located in the exhaust fan inlet duct.(a) Dampers(b) Blowers(c) Air duct(d) Ventilator’sThe question was asked during an interview.I would like to ask this question from Pulverised Mills in division Steam Power Plant of Energy Engineering |
Answer» The correct choice is (a) Dampers |
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29. |
Which system was used before direct firing system in pulverized fuel firing?(a) Unit system(b) Burner and pulverizer system(c) Bin system(d) PulverizerI had been asked this question in an interview for internship.Question is from Pulverised Fuel Handling topic in chapter Steam Power Plant of Energy Engineering |
Answer» Right option is (c) Bin system |
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30. |
Which type of draught system is used in the pulverized fuel firing system?(a) Forced draught(b) Balanced draught(c) Induced draught(d) Natural draughtI had been asked this question in an interview for job.Question is taken from Pulverised Fuel Handling in chapter Steam Power Plant of Energy Engineering |
Answer» The correct answer is (c) Induced draught |
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31. |
How is the fuel selected in the pulverized fuel system?(a) Depending on its size(b) Depending on its grade(c) Depending on volatile matter content(d) Depending the chemical compositionThis question was posed to me during an interview for a job.My query is from Pulverised Fuel Handling topic in portion Steam Power Plant of Energy Engineering |
Answer» Right option is (c) Depending on volatile matter content |
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32. |
Which type of oil burners are used for domestic purposes?(a) Atomizing burner(b) Vaporizing burner(c) Steam jet atomization burner(d) Mechanical atomization burnerI have been asked this question in an online interview.My doubt is from Fuel Burning Equipments topic in chapter Steam Power Plant of Energy Engineering |
Answer» Right option is (B) Vaporizing burner |
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33. |
In which type of machine is the coal reduced to fine powders?(a) Blender(b) Crushers(c) Grinder(d) RollersI have been asked this question in my homework.Origin of the question is Pulverised Fuel Burning topic in portion Steam Power Plant of Energy Engineering |
Answer» The correct option is (c) Grinder |
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34. |
Which coal burner has the circular discharge orifices?(a) Tangential burner(b) Stream-line burner(c) Turbulent burner(d) Cyclone burnerThis question was posed to me in an interview.The origin of the question is Fuel Burning Equipments topic in portion Steam Power Plant of Energy Engineering |
Answer» The correct answer is (c) Turbulent burner |
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35. |
Which coal burner is called Long-flame burner?(a) Tangential burner(b) Turbulent burner(c) Stream line burner(d) Cyclone burnerI had been asked this question during an interview for a job.My enquiry is from Fuel Burning Equipments in portion Steam Power Plant of Energy Engineering |
Answer» The correct option is (c) Stream line burner |
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36. |
What is the purpose of rotary scoop shaped rejecter arms in impact mill?(a) To send back the coal back into grinder for second run(b) To throw the large particles back into the grinder(c) To eliminate ash from the pulverizer(d) To eliminate rocks and solid particles that has mixed up with the coalThe question was posed to me in final exam.This intriguing question comes from Pulverised Mills in division Steam Power Plant of Energy Engineering |
Answer» Right answer is (b) To throw the LARGE particles back into the grinder |
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37. |
Which mechanism is used for the uniform distribution of the coal in multi retort stoker?(a) Reciprocating ram(b) Nozzle(c) Screw conveyor(d) Steam jet blowersThe question was posed to me in an interview.This is a very interesting question from Type of Stokers topic in section Steam Power Plant of Energy Engineering |
Answer» Correct choice is (a) RECIPROCATING ram |
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38. |
Why is direct firing system considered better than bin system in pulverizer fuel firing?(a) It has long operating procedure(b) The auxiliaries used in system consume large amount of power(c) The initial cost of system is very high(d) The transportation of coal is much more complexThis question was posed to me during an interview.The query is from Pulverised Fuel Handling topic in division Steam Power Plant of Energy Engineering |
Answer» Correct answer is (a) It has long operating procedure |
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39. |
Where is the coal feeding mechanism located in spreader type stoker?(a) Above the grate(b) Right side of the grate(c) Left side of the grate(d) Below the grateI had been asked this question during a job interview.This interesting question is from Type of Stokers in section Steam Power Plant of Energy Engineering |
Answer» The CORRECT option is (a) Above the grate |
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40. |
Which is the zone where the water vapors carried in air reacts with carbon in over-feed system?(a) Green coal bed zone(b) Incandescent zone(c) Combustion zone(d) At the ash pitI have been asked this question during a job interview.Origin of the question is Principle of Stoker topic in section Steam Power Plant of Energy Engineering |
Answer» The correct option is (B) Incandescent zone |
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41. |
Where exactly are mechanical stokers used?(a) In transportation of fuels(b) In small capacity plants(c) In large capacity plants(d) For domestic usageThe question was posed to me during a job interview.My enquiry is from Fuel Burning in section Steam Power Plant of Energy Engineering |
Answer» Correct answer is (c) In large capacity plants |
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42. |
What is the function of sizer in coal handling?(a) To separate the coal depending on size(b) To check the amount of fuel that is supplied(c) To pick the coal of required size(d) To divert the coal flow into different burnersThe question was posed to me during an online exam.Question is from Stages of Coal Handling in portion Steam Power Plant of Energy Engineering |
Answer» The correct choice is (c) To PICK the COAL of required size |
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43. |
On which factor is the coal fed to the pulverizing mill in pulverized fuel firing system?(a) Steam generating rate(b) Capacity of intake of coal(c) On the rate of speed of the feeder(d) Depending on the temperature that is governed inside the combustion chamberI got this question during an interview for a job.My question is from Pulverised Fuel Handling in chapter Steam Power Plant of Energy Engineering |
Answer» Correct answer is (a) Steam generating rate |
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44. |
In what manner is the coal is fed to all the burners in pulverized fuel system?(a) Through a common feeder(b) Parallel feeding(c) From separate feeder(d) Series mesh feedingI got this question in homework.My question comes from Pulverised Fuel Handling in chapter Steam Power Plant of Energy Engineering |
Answer» Right answer is (C) From separate feeder |
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45. |
What are provided for the supply of air in single retort stoker?(a) Nozzles(b) Air ducts(c) Tuyere’s(d) Air blowersThe question was asked in quiz.This is a very interesting question from Type of Stokers topic in portion Steam Power Plant of Energy Engineering |
Answer» Correct answer is (c) Tuyere’s |
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46. |
What is the function of magnetic separator in coal handling?(a) To remove impurities(b) To separate bituminous coal(c) To remove iron particles(d) To separate metal contentsThis question was posed to me during an internship interview.Origin of the question is Stages of Coal Handling topic in division Steam Power Plant of Energy Engineering |
Answer» Right OPTION is (c) To remove iron particles |
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47. |
Why is it necessary to use noncandescent materials in place of coal storage area?(a) To avoid it from catching fire(b) To act as a fire resistor during the cause of fire(c) To avoid it from acting as a supporter of fire(d) To provide a cool environmentI have been asked this question in an interview for internship.This intriguing question originated from Fuel Handling System, Storage of Coal topic in portion Steam Power Plant of Energy Engineering |
Answer» | |
48. |
What happens due to the pressure in the pulverizer?(a) Pulverized fuel is blown into boiler room(b) Increases the rate of combustion(c) Makes the process is vigorous(d) The large particles in the pulverized fuels are removed outI have been asked this question in exam.This interesting question is from Pulverised Mills topic in division Steam Power Plant of Energy Engineering |
Answer» Correct ANSWER is (a) Pulverized fuel is blown into BOILER room |
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49. |
Why pre-heater air and the tempered air are introduced in the pulverizer of ball mill?(a) To carry the ash out(b) To increase the combustion rate(c) To carry pulverized coal(d) To dry the coal by removing the moistureI got this question by my college director while I was bunking the class.My question is from Pulverised Mills topic in chapter Steam Power Plant of Energy Engineering |
Answer» Correct choice is (c) To carry pulverized coal |
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50. |
What is used to remove moisture air after cyclone separation in the pulverized fuel system?(a) Sponge pad(b) Dry filters(c) Fabric bag(d) Hot airI have been asked this question during an internship interview.I need to ask this question from Pulverised Fuel Handling in division Steam Power Plant of Energy Engineering |
Answer» | |