Top 250+ Solved Internal Combustion Engines (I.C. Engines) MCQ Questions Answer
Q. The Bomb calorimeter is used to determine the calorific value of:
a. solids and liquid fuels
b. solid and gaseous fuels
c. liquid fuels that can be easily vaporized
d. solid fuels only
Q. If the intake air temperature of I.C. engine increases, its efficiency will
a. increase
b. decrease
c. remain same
d. unpredictable
Q. All heat engines utilize
a. low heat value of oil
b. high heat value of oil
c. net claorific value of oil
d. calorific value of fuel
Q. An engine indicator is used to determine the following
a. speed
b. temperature
c. volume of cylinder
d. m.e.p. and I.H.P.
Q. Fuel oil consumption guarantees for I .C. engine are usually based on
a. low heat value of oil
b. high heat value of oil
c. net calorific value of oil
d. calorific value of fuel
Q. Combustion in compression ignition engines is
a. homogeneous
b. heterogeneous
c. both (a) and (b)
d. laminar
Q. The air requirement of a petrol engine during starting compared to theoretical required forcomplete combustion is
a. more
b. loss
c. same
d. may be more or less depending on engine capacity
Q. Diesel fuel, compared to petrol is
a. less difficult to ignite
b. just about the same difficult to ignite
c. more difficult to ignite
d. highly ignitable
Q. When crude oil is heated, then which of the following hydrocarbon is given off first.
a. kerosene
b. gasoline
c. paraffin
d. natural gas.
Q. The rating of a diesel engine, with increase in air-intlet temperature, will
a. increase linearly
b. decrease linearly
c. increase parabolically
d. decrease parabolically
Q. A 75 cc engine has following parameter as 75 cc
a. fuel tank capacity
b. lub oil capacity
c. swept volume
d. cylinder volume
Q. A heat engine utilises the
a. calorific value of oil
b. low heat value of
c. high heat value of oil
d. mean heat value of oil
Q. Gaseous-fuel guarantees are based on
a. calorific value of oil
b. low heat value of oil
c. high heat value of oil
d. mean heat value of oil
Q. Fuel consumption of diesel engines is not guaranteed at one quarter load because at suchlow loads
a. the friction is high
b. the friction is unpredictable
c. the small difference in cooling water temperature or in internal friction has a disproportionate effect
d. the engine is rarely operated
Q. Polymerisation is a chemical process in which molecules of a compound become
a. larger
b. slowed down
c. smaller
d. liquid