Automobile Engine MCQs

Question 1

The 'Ackerman mechanism' is related to:

Accepted Answer

Steering system

Answer

Air conditioning system

Answer

Transmission system

Answer

Lubrication system

Question 2

Which of the following symptoms show that the combustion is necessarily complete?

Accepted Answer

Presence of carbon mono-oxide in exhaust

Answer

Presence of free carbon in exhaust

Answer

Presence of oxygen in exhaust

Answer

Presence of nitrogen in exhaust

Question 3

The condition that causes vapour locking in a brake system is

Accepted Answer

Overheating of the fluid due to frequent brake application

Answer

Overcooling of the brakes during high speed driving

Answer

Keeping the vehicle without use for an extended period

Answer

An excessively high engine speed on a downhill road

Question 4

Electric brakes are commonly used on

Accepted Answer

Trailers

Answer

Two whellers

Answer

Cars

Answer

Trucks

Question 5

The forced fed lubrication system means that the oil is delivered to the engine by

Accepted Answer

The pressure created by the oil pump

Answer

Gravity

Answer

Splashing action of the crankshaft

Answer

None of these

Question 6

The valves have to be replaced if the metal to be removed for smoothening their end surfaces is more than

Accepted Answer

0.5 mm

Answer

0.05 mm

Answer

1.5 mm

Answer

5 mm

Question 7

A thermister is used in an alternator regulator to

Accepted Answer

Compensate for temprerature

Answer

Control maximum voltage

Answer

Control maximum current

Answer

All of the above

Question 8

Pre-ignition

Accepted Answer

Causes reduced efficiency and loss of power

Answer

Is the spontaneous ignition of the last part of charge

Answer

Is resorted to at higher altitudes

Answer

Increases the efficiency and saves unburnt fuel

Question 9

Maximum permissible ovality in a cylinder is usually

Accepted Answer

0.01 mm

Answer

0.1 mm

Answer

0.5 mm

Answer

1.0 mm