Lakshya Education MCQs

Question: A basic difference between the spark ignition engine and the Diesel engine is that the
A.Diesel engine compresses air alone instead of an air-fuel mixture
B.Air temperature ignites the fuel in the Diesel engine
C.Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
D.All of the above
Answer: Option D

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More Questions on This Topic :

Question 1. The main function of intake manifold is that it
  1.    Promotes the mixture of air and fuel
  2.    Reduces intake noise
  3.    Cools the intake air to a suitable temperature
  4.    Distributes intake air equally to the cylinders
Answer: Option D
Question 2. The clutch is located between the transmission and the
  1.    Engine
  2.    Rear axle
  3.    Propeller shaft
  4.    Differential
Answer: Option A
Question 3. If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is
  1.    175
  2.    65
  3.    14
  4.    82
Answer: Option B
Question 4. The function of a radiator fan in the cooling system is that
  1.    It blows air through the radiator when necessary
  2.    It is turned by wind force as the vehicle moves forward, and its rotation drives the water pump
  3.    It cools the engine by blowing air onto the cylinder block
  4.    It draws heat out of the engine compartment
Answer: Option A
Question 5. The heat transfer from coolant to air in the radiator of an automobile engine takes place by
  1.    Radiation only
  2.    Convention only
  3.    Convection and radiation
  4.    Conduction, convection and radiation
Answer: Option C
Question 6. If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
  1.    Detonation
  2.    Ignition
  3.    Pre-ignition
  4.    Rumble
Answer: Option C

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