Top 350+ Solved Automobile Engineering MCQ Questions Answer
Q. Which region of an automobile tyre is subjected to greatest flexing action?
a. Bead
b. Side wall
c. Shoulder
d. Tread
e. None of the above
Q. The time before actual fuel injection and pump olunger starts to pump fuel, is known as
a. injection lag
b. overlap
c. ignition lag
d. none of the above
e. None of the above
Q. The inlet value of a four stroke I.C. engine, in actual practice, should close
a. exactly at the end of suction stroke
b. slightly after the end of suction stroke
c. slightly before the end of suction stroke
d. none of the above
e. None of the above
Q. Ignition system used in scooters is
a. magneto system
b. battery system
c. Combination of magneto and battery system
d. neither magneto nor battery system
e. None of the above
Q. In a petrol engine, the gas which does not burn and passes out without transformation is
a. Oxygen
b. Carbondioxide
c. Nitrogen
d. Carbon monoxide
e. Water vapour
Q. In case of clutch if the springs become weak, the remedy lies in
a. Tightening further the springs
b. Interchanging the springs
c. Retempering the springs
d. Replacing the springs
e. Any of the above
Q. If the water level in engine is maintained low, the likely consequence could be
a. Piston seizure
b. Engine knocking
c. Bearing deterioration
d. All of the above
e. None of the above
Q. At the first sight a petrol engine is identified by
a. Size of air cleaner
b. Cylinder size
c. Spark plug
d. Power output
e. Operating speed
Q. Aluminium cylinder blocks require
a. No lines
b. Brass liners
c. Stainless steel liners
d. Cast iron liners
e. Aluminium liners
Q. 1000 mm diameter tyre is generally used on
a. Scooters
b. Jeeps
c. Motorcycles
d. Trucks
e. Mopads
Q. Engine starter motor is
a. D.C. compound motor
b. D.C. series motor
c. Synchronous motor
d. Single phase A.C. motor
e. D.C. shunt motor
Q. Which one of the followings is used in C.I. engines?
a. spark plug
b. injector
c. cross-head
d. none of the above
e. None of the above
Q. Failure of an engine to start even though it turns over at normal cranking speed could be due to
a. A defective cranking motor
b. Defective ignition
c. Run down battery
d. Sticking valve
e. Low ambient temperature
Q. The substance which when added in a small proportion into petrol reduces knocking is
a. iso-butane
b. n-heptane
c. methyl nepthalene
d. tetra ethyl lead
e. None of the above
Q. In a diesel engine the pipe carrying fuel from fuel pump to nozzle is made of
a. Plastic
b. Aluminium
c. P.V.C.
d. Steel
e. Copper