Top 350+ Solved Automobile Engineering MCQ Questions Answer
Q. If the oil level in the oil pan of the engine is maintained above the gauge mark, the likely damage it may cause is
a. Engine fuming
b. Carbon deposits
c. Blue colour in exhaust
d. All of the above
e. None of the above
Q. A two stroke engine is generally preferred to a four stroke engine because
a. Shocks and vibrations are less
b. It can be earily started
c. Its size is smaller
d. Its fuel consumption is low
e. It can be easily controlled
Q. High gum content in petrol may result in
a. detonation
b. misfiring
c. clogging of carburettor
d. none of the above
e. None of the above
Q. Cetane number of a Diesel fuel is measure of
a. Ignition quality
b. Viscosity
c. Volatility
d. Delay period
e. A.P.I. specific gravity
Q. Efficiency of an IC engine is normally of the order of
a. 30-35%
b. 50-60%
c. 10-15%
d. 80-90%
e. Alcohol
Q. For flow of petrol from fuel tank to the carburettor, the fuel system includes
a. A vacuum pump
b. A suction pump
c. A float
d. A fuel pump
e. An acceleration pump
Q. Connecting rods are generally of the following form
a. Forged I section
b. Cast iron square section
c. Forged square section steel
d. Cast iron triangular section
e. Forged round section
Q. Cetane number of Diesel oil normally available in market is in the range.
a. 75 -- 80
b. 60 -- 65
c. 90 -- 105
d. 90 -- 100
e. 45 -- 50
Q. If a spark plug does not fire, the probable cause could be
a. Cracked porcelain
b. Carbonized porcelain
c. Moisture or dirt accumulation on porcelain
d. Weak ignition coil
e. Any of the above
Q. Grease cannot be used as lubricant for the lubrication of
a. Front wheel bearings
b. Slip joint
c. Input shaft
d. Coolant pump
e. Transmission
Q. Boiling range of kerosene is
a. 50 to 100?C
b. 100 to 150?C
c. 150 to 300?C
d. 350 to 500?C
e. None of the above
Q. The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the cylinder from the crank-case, is known as
a. cleaning
b. priming
c. scavenging
d. none of the above
e. None of the above
Q. In a four stroke SI engine the inlet valve opens
a. at TDC and closes at BDC
b. 10? before TDC and closes 10? after BDC
c. 10? before TDC and closes 10? after BDC
d. 10? before TDC and closes 50? after BDC
e. None of the above
Q. Which one of the following is not a part of the chassis?
a. Steering system
b. Wheels
c. Rear axles
d. Passenger seats
e. Front axle