The air-fuel ratio of the petrol engine is controlled by__________________?

A. Fuel pump
B. Governor
C. Injector
D. Carburettor

Diesel fuel, compared to petrol is_________________?

A. Less difficult to ignite
B. Just about the same difficult to ignite
C. More difficult to ignite
D. Highly ignitable

When crude oil is heated, then which of the following hydrocarbon is given off first______________?

A. kerosene
B. gasoline
C. paraffin
D. diesel

A 75 cc engine has following parameter as 75 cc ___________________?

A. Fuel tank capacity
B. Lub oil capacity
C. Swept volume
D. Cylinder volume

Gaseous-fuel guarantees are based on___________________?

A. Calorific value of oil
B. Low heat value of oil
C. High heat value of oil
D. Mean heat value of oil

Polymerisation is a chemical process in which molecules of a compound become________________?

A. Larger
B. Slowed down
C. Smaller
D. Liquid

In diesel engine, the compression ratio in comparison to expansion ratio is_______________?

A. Same
B. Less
C. More
D. Variable

Engine pistons ‘are usually made of aluminium alloy because it_________________?

A. Is lighter
B. Wears less
C. Absorbs shocks
D. Is stronger

The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is_______________?

A. Same
B. More
C. Less
D. Less or more depending on operating conditions

The size of inlet valve of.an engine in comparison to exhaust valve is_________________?

A. More
B. Less
C. Same
D. More/less depending on capacity of engine