IC Engines MCQ with Answers

1) The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft

Answer is:

2

Explanation:

.

2) In a diesel engine, the fuel is ignited by

Answer is:

heat resulting from compressing air that is supplied for combustion

Explanation:

The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to the mechanical compression. Hence diesel engines are also called as Compression ignition (C.I) engines.

3) Scavenging air in diesel engine means

Answer is:

air used for forcing burnt gases out of engine′s cylinder during the exhaust period

4) Supercharging is the process of

Answer is:

supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere

5) Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?

Answer is:

1) The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft

2

2) In a diesel engine, the fuel is ignited by

heat resulting from compressing air that is supplied for combustion

3) Scavenging air in diesel engine means

air used for forcing burnt gases out of engine′s cylinder during the exhaust period

4) Supercharging is the process of

supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere

5) Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged ?

no