Heat Engines MCQs | Page - 47

Dear candidates you will find MCQ questions of Heat Engines here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

📊 Heat Engines
Q. In case of glass tube type water level indicator for a boiler
  • (A) One end of the tube is connected to water space and the other is connected to steam space in the drum
  • (B) Both ends of the tube are connected to water space
  • (C) One end of the tube is connected to water space and the other end connected to chimney
  • (D) One end of the tube is connected to water space and the other end is connected to superheated steam outlet from superheater
💬 Discuss
✅ Correct Answer: (A) One end of the tube is connected to water space and the other is connected to steam space in the drum
📊 Heat Engines
Q. Baffles are provided on engines to
  • (A) Improve engine performance
  • (B) Improve heat transfers rate
  • (C) Guard against dirt and dust
  • (D) Assist in starting the engine
💬 Discuss
✅ Correct Answer: (B) Improve heat transfers rate
📊 Heat Engines
Q. A rope brake dynamometer falls under the category of
  • (A) Transmission type dynamometer
  • (B) Hydraulic dynamometer
  • (C) Mechanical friction type dynamometer
  • (D) Electrical type dynamometer
💬 Discuss
✅ Correct Answer: (C) Mechanical friction type dynamometer
📊 Heat Engines
Q. Live storage of fuel means
  • (A) Fuel stored to meet day's requirement for the boiler
  • (B) Fuel stored for supply at any time during emergency
  • (C) Fuel stored at the plant
  • (D) Fuel stored near the burners
💬 Discuss
✅ Correct Answer: (A) Fuel stored to meet day's requirement for the boiler
📊 Heat Engines
Q. In closed cooling system
  • (A) Hot water is recirculated after cooling
  • (B) Constant fresh water for cooling is supplied
  • (C) Water surrounding the cylinder is allowed to evaporate
  • (D) Air and water cooling is simultaneously used
💬 Discuss
✅ Correct Answer: (A) Hot water is recirculated after cooling
📊 Heat Engines
Q. In a four stroke petrol engine
  • (A) Intake valve closes before TDC
  • (B) Intake valve closes after BDC
  • (C) Exhaust valve closes before BDC
  • (D) Exhaust valve open before BDC
💬 Discuss
✅ Correct Answer: (B) Intake valve closes after BDC
📊 Heat Engines
Q. Coking is
  • (A) In boiler furnace some coal becomes plastic and forms lumps or masses of coke
  • (B) Making cakes of coal out of fine powders
  • (C) Coal produced from burning of wood in inert atmosphere
  • (D) Free burning coals are known as coking coals
💬 Discuss
✅ Correct Answer: (A) In boiler furnace some coal becomes plastic and forms lumps or masses of coke
📊 Heat Engines
Q. Shock effect in the nozzle generally occurs in
  • (A) Inlet
  • (B) Converging section
  • (C) Throat
  • (D) Diverging section
💬 Discuss
✅ Correct Answer: (D) Diverging section
📊 Heat Engines
Q. If engines of different horse power, rpm, cylinder dimensions are to be compared for their performance, the parameter of comparison could be
  • (A) Mean effective pressure
  • (B) Specific speed
  • (C) Exhaust temperature
  • (D) Fuel consumption
💬 Discuss
✅ Correct Answer: (A) Mean effective pressure
📊 Heat Engines
Q. Ambassador car engine is
  • (A) F-type
  • (B) Overhead valve type
  • (C) Side valve type
  • (D) L-type
💬 Discuss
✅ Correct Answer: (B) Overhead valve type

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