Internal Combustion Engines MCQs

Question 1

The power to weight ratio of multi cylinder engines with increase in number of cylinders for the same power will

Accepted Answer

Decrease

Answer

Increase

Answer

Remain more or less same

Answer

Depends upon power to be developed

Question 2

The compression ratio is kept low in petrol engine compared to a diesel because

Accepted Answer

Higher compression ratio in pertol engine would lead to pre-ignition of fuel

Answer

Petrol engine is a light engine

Answer

It provides fuel economy

Answer

Faster operation is required in petrol engine

Question 3

Which of the following does not relate to C.I. engine

Accepted Answer

Carburetor

Answer

Fuel pump

Answer

Fuel injector

Answer

Governor

Question 4

Which of the following does not relate to S.I. engine

Accepted Answer

Fuel injector

Answer

Ignition coil

Answer

Distributor

Answer

Spark plug

Question 5

A temperature indicator is usually provided for automobiles. It indicates temperature of

Accepted Answer

Jacket cooling water

Answer

Lub oil

Answer

Engine cylinder walls

Answer

Engine piston

Question 6

The following type of battery is commonly used in automobile applications

Accepted Answer

Lead-acid

Answer

Dry battery

Answer

Nickel-cadmium

Answer

Nickel-iron

Question 7

The gear ratio in the differential unit of a passenger car is of the order of

Accepted Answer

3 : 1

Answer

2 : 1

Answer

6 : 1

Answer

8 : 1

Question 8

The differential in automobiles performs the function of

Accepted Answer

Permitting two rear wheels to have flexibility of relative speed, whenever it is required

Answer

Permitting two rear wheels to run independently

Answer

Allowing rear wheel movement

Answer

Reducing speed of propeller shaft to suit the requirement of wheel axles

Question 9

The automobiles generally utilise batteries having voltage of

Accepted Answer

12 V

Answer

3 V

Answer

6 V

Answer

24 V