Supercharging MCQ

Test your knowledge with important Supercharging MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Supercharging MCQs at Bissoy

• In two-stroke engines, what is required to purge exhaust gasses?
  ক

  Lighter piston

  খ

  Lubrication

  গ

  Oil

  ঘ

  Scavenging
• What happens to the engine if there is an increase in the temperature of the air+fuel mixture?
  ক

  Lower vibration

  খ

  Higher torque

  গ

  High efficiency

  ঘ

  Detonation
• Which are the types of dynamic compressors?
  ক

  Centrifugal and centripetal

  খ

  Single-stage and multi-stage axial flow

  গ

  Centripetal and single-stage axial flow

  ঘ

  Centrifugal and multi-stage axial flow
• When the boosted pressure is equal to the compression pressure of the supercharger, what is the value of the backflow?
  ক

  10

  খ

  4

  গ

  2

  ঘ

  0
• Internal compression devices usually use varying compression ratio.
  ক

  True

  খ

  False
• Which of the mentioned below is the disadvantage of supercharger?
  ক

  More volume of air

  খ

  Increase in temperature

  গ

  Higher density

  ঘ

  Cold air
• On what basis positive displacement superchargers are usually rated?
  ক

  Capacity per revolution

  খ

  Parts per million

  গ

  Displacement of engine

  ঘ

  Size of exhaust manifold
• Which supercharger doesn’t deliver pressure at low speeds?
  ক

  Dynamic compressor

  খ

  Negative displacement

  গ

  Static compressor

  ঘ

  Positive displacement
• Which supercharger delivers an almost constant level pressure increase at all engine RPM?
  ক

  Dynamic compressor

  খ

  Negative displacement

  গ

  Static compressor

  ঘ

  Positive displacement
• Which are the types of supercharger based on method of gas transfer?
  ক

  Positive displacement and dynamic compressors

  খ

  Positive displacement and negative displacement

  গ

  Dynamic compressors and Static compressors

  ঘ

  Negative displacement and Static compressors
• For a super charger, the drive is obtained by which part of the engine?
  ক

  Cam

  খ

  Connecting rod

  গ

  Exhaust manifold

  ঘ

  Crankshaft
• Which of the mentioned below is not a driving mechanism of a supercharger?
  ক

  Exhaust gas

  খ

  Belt

  গ

  Gear

  ঘ

  Chain
• What is the another name of supercharger?
  ক

  Pump

  খ

  Diffuser

  গ

  Cooler

  ঘ

  Compressor
• The loss in piston work due to the early opening of the exhaust valve is less than offset by better charging and scavenging of the engine.
  ক

  True

  খ

  False
• The power developed by the turbocharger is not sufficient to drive the compressor, and overcome its mechanical friction.
  ক

  True

  খ

  False
• The ignition must be retarded at high intake pressure and temperature.
  ক

  True

  খ

  False
• The ignition timings and thermal load on the engine affect the knock limit of CI engine.
  ক

  True

  খ

  False
• Rich mixtures are used to control detonation, which further increases the specific fuel consumption of the engine.
  ক

  True

  খ

  False
• The increased flame speeds make the petrol engine more sensitive to fuel-air ratio and engine cannot run on strong mixtures without knock.
  ক

  True

  খ

  False
• Increased intake pressure and temperature reduces ignition delay and decreases flame speed.
  ক

  True

  খ

  False
• The supercharged petrol engines have a lower fuel consumption than naturally aspirated engines.
  ক

  True

  খ

  False
• ____________ in supercharging pressure increases the tendency to detonate and pre-ignite.
  ক

  Decrease

  খ

  Increase

  গ

  Unpredictable

  ঘ

  None of the mentioned
• Supercharging of S.I engines is employed only for aircraft and racing car engines.
  ক

  True

  খ

  False