Top 250+ Solved Internal Combustion Engines (I.C. Engines) MCQ Questions Answer
Q. Common rail injection system uses injection pressures of the order
a. 100-200 bar
b. 200-400 bar
c. 400-600 bar
d. 1500 bar
Q. The cold start injector
a. maintain stoichiometric air-fuel ratio
b. provides lean air-fuel ratio
c. gives rich air-fuel ratio
d. is not used for any of the above functions
Q. ECU is an electronic injection system used for
a. calculating the appropriate injection timing
b. meeting only certain operating conditions
c. closing the injection valve only
d. none of the above
Q. With EFI (ELECTRONIC FUEL INJECTION) of diesel engines
a. sharp start and stop is not possible
b. very high injection pressure can be obtained
c. sudden cylinder cut-off is impossible
d. diagnostic properties are poor
Q. EFI system can achieve
a. proper injection timing
b. proper injection quantity
c. proper injection pressure
d. all of the above
Q. The first vehicle in India equipped with MPFI system in Indian automobile industry
a. Tata Indica
b. Daewoo Matiz
c. Maruti Alto
d. Chevrolet spark
Q. The fuel in diesel engine is normally injected at pressure of
a. 5-10 kg/cm2
b. 20-25 kg/cm2
c. 60-80 kg/cm2
d. 90-130 kg/cm2
Q. The specific fuel consumption per BHP hour for diesel engine is approximately
a. 0.15 kg
b. 0.2 kg
c. 0.25 kg
d. 0.3 kg
Q. The specific fuel consumption per BH hour for a petrol engine is approximately
a. 0.15 kg
b. 0.2 kg
c. 0.25 kg
d. 0.3kg
Q. The air-fuel ratio of the petrol engine is controlled by
a. fuel pump
b. governor
c. injector
d. carburettor
Q. Pour point of fuel oil is the
a. 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
b. temperature at which it solidifies or congeals
c. it catches fire without external aid
d. indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off
Q. A 5 BHP engine running at full load would consume diesel of the order of
a. 0.3 kg/hr
b. 1 kg/hr
c. 3 kg/hr
d. 5 kg/hr
Q. The secondary winding of ignition coil consists of
a. few turns of fine wire
b. few turns of thick wire
c. many turns of fine wire
d. many turns of thick wire
Q. Dwell is the time
a. for which the points remain closed
b. for which the points remain open
c. time during which inlet and exhaust valves are open
d. none of the above