Cooling and Lubrication in Automobile MCQs

Question 1

Advantages of Lubrication is/are-

Accepted Answer

All are correct

Answer

Reduces wear of parts

Answer

Absorbs heat

Answer

Clean and flushes the moving part

Question 2

If the total fuel energy is 100 units; then fuel energy used for useful work is-

Accepted Answer

20%

Answer

5%

Answer

45%

Answer

2%

Question 3

Radiator core consists of number of small . . . . . . . . pipes fixed in the fins.

Accepted Answer

Brass

Answer

Copper

Answer

Steel

Answer

Iron

Question 4

The engine oil pressure test is performed when

Accepted Answer

The oil pressure warning switch comes on while the engine is running

Answer

The oil pressure warning switch turns on while the ignition is at the ON position and the engine is not running

Answer

The oil pressure warning switch does not turn on while the ignition is at the ON position and the engine is not running

Answer

The oil pressure switch does not come on while the engine is running

Question 5

The valves inside the radiator cap regulate the pressure in the cooling system, thereby preventing damage to the system's pipe and other components.

Accepted Answer

True

Answer

False

Question 6

Which is correct?

Accepted Answer

A metal having higher conductivity dissipates more amount of heat

Answer

A metal having lower conductivity dissipates more amount of heat

Answer

Both are correct

Answer

None of these

Question 7

The function of a lubrication system is

Accepted Answer

All of the above

Answer

To reduce friction and wear

Answer

To cool the engine by carrying away the heat

Answer

To cushion the parts against vibration and sudden impact of load

Question 8

The general ratio of soluble oil and water used as coolant is

Accepted Answer

1 : 20

Answer

10 : 1

Answer

1 : 10

Answer

20 : 1

Question 9

The main advantage of the pump circulation system is

Accepted Answer

All of the above

Answer

Positive circulation of cooling water

Answer

No need to place the radiator header tank above the engine level

Answer

No need to place the radiator on the front