Fuel Supply System MCQ

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

• What is the change of state of the fuel from liquid to vapour?
  ক

  Vaporization

  খ

  Atomization

  গ

  Both A and B

  ঘ

  None of these
• The lean air-fuel mixture is required for
  ক

  Starting

  খ

  Idling

  গ

  Cruising

  ঘ

  Acceleration
• Vocational petrol is a mixture of
  ক

  Petrol or oil

  খ

  Staterun gasoline or diesel

  গ

  Staterun gasoline or cranked gasoline

  ঘ

  None of the above
• The most commonly used carburettor is
  ক

  Updraft type

  খ

  Horizontal type

  গ

  Downdraft type

  ঘ

  None of these
• The intake manifold is a . . . . . . . . tube for carrying the air fuel mixture from the carburettor to the engine intake port.
  ক

  Cast iron

  খ

  Aluminium

  গ

  Both A and B

  ঘ

  None of these
• At present the average octane rating of regular grade gasoline is
  ক

  5 - 9

  খ

  100 - 120

  গ

  93 - 94

  ঘ

  120 - 140
• If the air filter is removed in petrol engine the air/fuel ratio will
  ক

  Increases

  খ

  Decreases

  গ

  Increase or decrease

  ঘ

  Remains unchanged
• Knocking tendency in an SI engine reduces with increasing
  ক

  Compression ratio

  খ

  Wall temperature

  গ

  Supercharging

  ঘ

  Engine speed
• The intake manifold is mounted on the side of the cylinder block in . . . . . . . . engine.
  ক

  L-head

  খ

  S-head

  গ

  K-head

  ঘ

  N-head
• What is the mechanical breaking-up of the liquid fuel into small particles?
  ক

  Vaporization

  খ

  Atomization

  গ

  Both A and B

  ঘ

  None of these
• The process of supplying the intake air to the engine cylinder at a density more than the density of the surrounding atmosphere is known as
  ক

  Scavenging

  খ

  Detonation

  গ

  Supercharging

  ঘ

  Polymerisation
• If the pressure above the fuel in the float chamber is atmospheric pressure, the carburettor is said to be
  ক

  Balanced

  খ

  Unbalanced

  গ

  Both A and B

  ঘ

  None of these
• The fuel injection timing in a distributor type pump is controlled by
  ক

  Changing the plunger stroke

  খ

  Changing speed of rotor

  গ

  Rotating the cam ring

  ঘ

  Changing the number of cams on the ring
• The example of variable venturi carburettor is
  ক

  Carter carburettor

  খ

  Solex carburettor

  গ

  S. U. carburettor

  ঘ

  Zenith carburettor
• Function of carburettor is to supply
  ক

  Air and petrol mixture

  খ

  Air and diesel mixture

  গ

  Only petrol

  ঘ

  Petrol and diesel mixture
• Dopes is added to the engine fuel
  ক

  To reduce its detonation tendency

  খ

  To improve lubrication

  গ

  To improve lubrication and reduce detonation

  ঘ

  None of the above
• The impeller type electric fuel pump consists of a pump casing, a DC motor, an impeller, a relief valve, and a check valve.
  ক

  True

  খ

  False
• In internal combustion engine terminology, MPFI stands for
  ক

  Multi-pressure Fuel Injection

  খ

  Multi-point Fired Ignition

  গ

  Multi-point Fuel Injection

  ঘ

  Multi-pressure Fired Ignition
• The diesel injection pump is usually driven by a
  ক

  Gear driven from the engine camshaft

  খ

  Belt driven from the engine crankshaft

  গ

  Shaft driven from the engine crankshaft

  ঘ

  Chain driven from the engine camshaft
• An average crude oil yields about . . . . . . . . percentage of straight run gasoline.
  ক

  75%

  খ

  25%

  গ

  50%

  ঘ

  100%
• Morse test is conducted on
  ক

  Vertical engines

  খ

  Horizontal engines

  গ

  Single cylinder engines

  ঘ

  Multi cylinder engines
• Octane number of iso-octane is
  ক

  50

  খ

  70

  গ

  0

  ঘ

  100
• The basic type of fuel-injection system are
  ক

  Common rail system

  খ

  Jerk-pump system

  গ

  Distributor pump system

  ঘ

  All are correct
• The main function of the float chamber in carburettor is
  ক

  To maintain a constant head fuel

  খ

  To control the quantity of air-fuel mixture

  গ

  To increase the air velocity

  ঘ

  To inject the fuel into the air stream
• Normal heptane
  ক

  Helps to resists auto-ignition

  খ

  Accelerates auto-ignition

  গ

  Has no relation with ignition

  ঘ

  None of the above
• The throttle valve controls the supply of
  ক

  Air only

  খ

  Fuel only

  গ

  Air-fuel mixture

  ঘ

  None of these
• In an electronic fuel injection system, the ECU calculates the optimum fuel injection volume for the current engine condition based on data from a wide range of sensor, and it injects this volume of fuel into the intake manifold at the optimum timing.
  ক

  True

  খ

  False
• The diesel fuel is ignited in a diesel engine by
  ক

  Spark plugs

  খ

  Heat of compression

  গ

  Distributorless ignition system

  ঘ

  Glow plugs
• A straight-run gasoline can be reformed by catalytic means, the product is known as . . . . . . . .
  ক

  Reformed gasoline

  খ

  Analytically cracked gasoline

  গ

  Catalytically reformed gasoline

  ঘ

  None of the above
• The venturi in the carburettor causes
  ক

  Increase of air velocity

  খ

  Decrease of air velocity

  গ

  Decrease of fuel flow

  ঘ

  Decrease of manifold vacuum