Total Engine Friction MCQ

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

• The frictional mean effective pressure ____________ as the compression ratio is increased.
  ক

  increases

  খ

  decreases

  গ

  remains same

  ঘ

  none of the mentioned
• When a smaller number of large cylinders are used, the friction and economy improve.
  ক

  True

  খ

  False
• Blowby losses ____________ directly with compression ratio.
  ক

  increases

  খ

  decreases

  গ

  remains same

  ঘ

  none of the mentioned
• ____________ losses are caused due to the leakage of combustion products past the piston from the cylinder into the crankcase.
  ক

  Pumping

  খ

  Blowby

  গ

  Pressure

  ঘ

  None of the mentioned
• Combustion chamber pump loss is caused due to the pumping work required to pump gases into and out of the pre-combustion chamber.
  ক

  True

  খ

  False
• The exhaust throttling loss occurs due to the restrictions imposed by air cleaner, carburetor venturi, throttle valve, intake manifold and intake valve.
  ক

  True

  খ

  False
• If due attention is not given to the valve size, valve timing and valve flow coefficients there may be a substantial loss with the increase in engine speed.
  ক

  True

  খ

  False
• The standard practice for sizing the exhaust valve is to make them a certain percentage ____________ than the inlet valves.
  ক

  larger

  খ

  smaller

  গ

  unpredictable

  ঘ

  none of the mentioned
• The pumping loss is negligible in two-stroke cycle engines.
  ক

  True

  খ

  False
• In four stroke cycle engines, an ample amount of ____________ is used during intake and exhaust processes.
  ক

  heat

  খ

  pressure

  গ

  power

  ঘ

  none of the mentioned
• The difference between I.P. and B.P. is known as total engine friction loss.
  ক

  True

  খ

  False