Automobile Engineering MCQ Questions and Answers

Published: 25 Nov 2025

1. Which of the following is not an automobile?
a) Motor Cycle
b) Passenger Car
c) Aeroplane
d) Truck

2. The purpose of a balancer shaft is to
a) Balance the timing in the moment of two groups of pistons
b) Increasing force of the rotating crankshaft
c) Reduce vibrations caused by the crankshaft rotation
d) Adjust the timing of the intake and exhaust valve opening

3. The function of oil control rings is that it
a) Lubricants the cylinder wall by releasing oil from its hole
b) Keeps the cylinder wall lubricated by holding while in its channel
c) Prevention while from going into the combustion chamber and return excess lubricant oil of the cylinder valve throw the return hole in the Piston to the oil pan
d) Maintains a scene and prevent scape of burnt gases and oil leakage

4. The connecting rod is attached to the piston by the
a) Cap Bolt
b) Piston pin
c) Cap Roller bearing
d) Rod cap

5. The motion of the cam is transferred to the valves through
a) Pistons
b) Rocker Arms
c) Camshaft pulley
d) Valve Steams

6. The timing belt is attached to the camshaft pulley and
a) Timing be timing belt drive Pulley
b) Distributor
c) Radiator fan pulley
d) Alternator Pulley

7. The exhaust gas from petrol engine contains
a) Petrol vapours
b) Water vapours
c) Carbon monoxide
d) All of these

8. The self ignition temperature of diesel as compared to petrol is
a) Higher
b) Lower
c) Same
d) Depend on fuel quality

9. The oil pump is driven by the
a) Camshaft
b) Alternator shaft
c) Crankshaft via drive belt
d) Crankshaft directly

10. An oil filter bypass valve opens when the
a) Engine is cold
b) Engine overheats
c) Oil filter becomes clogged
d) Engine runs at high speed