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MCQs

Total Questions : 1124 | Page 55 of 113 pages
Question 541. When crude oil is heated, then which of the following hydrocarbon is given off first?
  1.    Kerosene
  2.    Paraffin
  3.    Gasoline
  4.    Natural gas
 Discuss Question
Answer: Option D. -> Natural gas
Question 542. The air-fuel ratio in petrol engines is controlled by
  1.    Controlling valve opening/closing
  2.    Governing
  3.    Carburetion
  4.    Injection
 Discuss Question
Answer: Option C. -> Carburetion
Question 543. The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of
  1.    Motoring test
  2.    Heat balance test
  3.    Prony brake test
  4.    Morse test
 Discuss Question
Answer: Option D. -> Morse test
Question 544. The specific fuel consumption per BHP hour for diesel engine is approximately
  1.    0.2 kg
  2.    0.3 kg
  3.    0.15 kg
  4.    0.25 kg
 Discuss Question
Answer: Option A. -> 0.2 kg
Question 545. The output of a diesel engine can be increased without increasing the engine revolution or size in following way
  1.    Scavenging
  2.    Supercharging
  3.    Feeding more fuel
  4.    Heating incoming air
 Discuss Question
Answer: Option B. -> Supercharging
Question 546. Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?
  1.    No
  2.    To some extent
  3.    Unpredictable
  4.    Yes
 Discuss Question
Answer: Option A. -> No
Question 547. The actual volume of fresh charge admitted in 4-stroke petrol engine is
  1.    Equal to stroke volume
  2.    Less than stroke volume
  3.    More than stroke volume
  4.    Equal to stroke volume and clearance volume
 Discuss Question
Answer: Option B. -> Less than stroke volume
Question 548. Fuel oil consumption guarantees for I .C. engine are usually based on
  1.    Low heat value of oil
  2.    High heat value of oil
  3.    Net calorific value of oil
  4.    Calorific value of fuel
 Discuss Question
Answer: Option B. -> High heat value of oil
Question 549. In loop scavenging, the top of the piston is
  1.    Flat
  2.    Contoured
  3.    Slanted
  4.    Depressed
 Discuss Question
Answer: Option B. -> Contoured
Question 550. The turbine of the turboprop engine is ___ that of the turbojet engine.
  1.    Smaller than
  2.    Same as
  3.    None of the listed here
  4.    Bigger than
 Discuss Question
Answer: Option D. -> Bigger than

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