Top 350+ Solved Automobile Engineering MCQ Questions Answer
Q. The phenomenon that causes pressure waves resulting in vibration of structure, rough running and melting of piston is
a. detonation
b. pre-ignition
c. knocking
d. none of the above
e. None of the above
Q. The efficiency of hydraulic braking system is
a. 50 - 60 percent
b. 40 - 50 percent
c. 25 - 40 percent
d. About 90 percent
e. 60 - 70 percent
Q. Diesel engines are generally preferred for road transport these days because of low
a. Maintenance cost
b. Operating cost
c. Initial cost
d. Prime cost
e. Manufacturing cost
Q. Stratification of charge is achieved by
a. use of two or more carburettors
b. locating two spark plugs on a cylinder
c. incorporating an auxiliary chamber
d. combining inlet and exhaust valves into a single unit
e. None of the above
Q. The knocking in S.I. engines can be prevented if the end mixture is having
a. high density
b. medium density
c. low density
d. none of the above
e. None of the above
Q. A four sylinder four stroke petrol engine running at 1000 rpm will have in all how many sparks in one minute?
a. 250
b. 500
c. 1000
d. 2000
e. None of the above
Q. Which one of the following is mounted between the engine and gear box?
a. Propellor shaft
b. Differential gear
c. Reduction gear
d. Clutch
e. None of the above
Q. A thermostat is provided in automobile engines for
a. Controlling the temperature of the piston
b. Regulating the temperature of lubricating oil
c. Regulating the temperature of suction air
d. Regulating the temperature of haust gases.
e. Controlling the temperature of the cooling system
Q. Bead of a tyre constitutes
a. metal foundations of the tyre
b. side walls of the tyre
c. shoulder region
d. none of the above
e. None of the above
Q. The probable cause for uneven wear of tyres for a truck could be
a. Low tyre pressure
b. Excessive camber
c. Tyres overloaded
d. Incorrect castor
e. Any of the above
Q. Circumferential grooves on tyres
a. Lessen the danger of skidding
b. Increase load carrying capacity
c. Provide good traction
d. Remove any stones etc. from sticking to the tyre
e. All of the above
Q. Which one of the following is a correct statement
a. the exhaust valve of a four stoke I.C. engine should open exactly at the end of expansion stroke
b. in actual practice, inlet valve of a four stroke I.C. engine should open exactly at the start of suction stroke
c. the inlet valve remains open approximately for 180?
d. valve overlap is the angle during which both the inlet and exhaust valves remain open simultaneously
e. None of the above
Q. A heat-treated glass generally used in automobiles upon cracking bursts into
a. Sharp edged fragments
b. Small particles
c. Does not disintegrate
d. Either of the above
e. None of the above