Diesel Engine Basics MCQ

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

• In a diesel engine, the duration between the time of injection and ignition is known as?
  ক

  delay period

  খ

  period of ignition

  গ

  burning period

  ঘ

  pre-ignition period
• A moderator generally used in nuclear power plants is?
  ক

  heavy water

  খ

  concrete

  গ

  graphite & concrete

  ঘ

  graphite
• The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called?
  ক

  overall efficiency

  খ

  mechanical efficiency

  গ

  relative efficiency

  ঘ

  volumetric efficiency
• The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the __________
  ক

  jet area is automatically varied depending on the suction

  খ

  the flow from the main jet is diverted to the compensating jet with increase in speed

  গ

  flow is produced due to the static head in the float chamber

  ঘ

  the diameter of the jet is constant and the discharge coefficient is invariant
• The object of supercharging the engine is __________
  ক

  to increase the power output of an engine when greater power is required

  খ

  to reduce mass of the engine per brake power

  গ

  to reduce space occupied by the engine

  ঘ

  all of the mentioned
• Supercharging is the process of __________
  ক

  Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere

  খ

  Supplying compressed air to remove combustion products fully

  গ

  Providing excess temperature to the sucked in gases

  ঘ

  None of the mentioned
• What is the maximum temperature in the I.C. engine cylinder is of the order of(in degree Celsius)?
  ক

  500-1000

  খ

  1000-1500

  গ

  1500-2000

  ঘ

  2000-2500
• What is the pour point of fuel oil?
  ক

  Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

  খ

  Temperature at which it solidifies or congeals

  গ

  It catches fire without external aid

  ঘ

  Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off
• Reactors for propulsion applications are designed for__________
  ক

  any form of uranium

  খ

  natural uranium

  গ

  enriched uranium

  ঘ

  thorium
• The probability of knocking in diesel engines is increased by __________
  ক

  high self-ignition temperature

  খ

  low volatility

  গ

  high viscosity

  ঘ

  all of the mentioned
• The mean effective pressure obtained from engine indicator indicates the __________
  ক

  maximum pressure developed

  খ

  minimum pressure developed

  গ

  instantaneous pressure at any point

  ঘ

  average pressure
• The ignition quality of petrol is expressed by __________
  ক

  Cetane number

  খ

  Octane number

  গ

  Calorific Value

  ঘ

  None of the mentioned
• The operation of forcing additional air under pressure in the engine cylinder is known as __________
  ক

  Supercharging

  খ

  Scavenging

  গ

  Turbulence

  ঘ

  Pre-ignition