Internal Combustion Engines MCQs

Question 1

The firing order in a six stroke I.C. engine is

Accepted Answer

1-5-3-4-2-6

Answer

1-3-6-5-2-4

Answer

1-6-2-5-4-3

Answer

1-5-2-6-3-4

Question 2

Sulphur content in diesel oil should not be more than

Accepted Answer

1%

Answer

10%

Answer

5%

Answer

0.1%

Question 3

The m.e.p. of a diesel cycle having fixed compression ratio with increase in cut-off will

Accepted Answer

Increase

Answer

Decreae

Answer

Be unaffected

Answer

Depend on other factors

Question 4

The ash content in diesel oil should bot be more than

Accepted Answer

0.01%

Answer

1%

Answer

5%

Answer

0.10%

Question 5

The pour point of diesel oil must be

Accepted Answer

Lower than the coldest atmospheric temperature at which oil is to be pumped

Answer

Higher than above

Answer

Has no such relation

Answer

More than 100°C

Question 6

High carbon content in diesel oil used for diesel engine leads to

Accepted Answer

Deposition on engine parts

Answer

Production of highly corrosive gases corroding the cylinder walls and exhaust system

Answer

Excessive engine wear

Answer

Damaging of both the storage tank and the engine

Question 7

Exhaust pipes of engines are covered with insulating material in order to

Accepted Answer

Reduce heat transfer to the engine MOM

Answer

Keep the exhaust pipes warm

Answer

Reduce formation of condensate

Answer

Increase engine efficiency

Question 8

Ignition timing of a multi cylider petrol engine can be adjusted by

Accepted Answer

Rotating the distributor

Answer

Rotating the crank

Answer

Adjusting the spark plug gap

Answer

Adjusting ignition coil position

Question 9

Fuel consumption with increase in back pressure will

Accepted Answer

Increase

Answer

Decrease

Answer

Remain unaffected

Answer

Depend on other factors