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

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

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

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

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

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

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

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

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

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

The accunmulation of carbon in a cylinder results in increase of________________?

A. Clearance volume
B. Volumetric efficiency
C. Ignition time
D. Effective compression ratio

The precess of breaking up or a lipuid into fine droplets by spraying is called___________________?

A. vaporisation
B. carburetion
C. ionisation
D. injection

In a typical medium speed 4-stroke cycle diesel engine________________?

A. Compression starts at 35° after bottom dead center and ends at top dead center
B. Compression starts at bottom dead center and ends at top dead center
C. Compression starts at 10° before bottom dead center and, ends just before top dead center
D. May start and end anywhere

The output of a diesel engine can be increased without increasing the engine revolution or size in following way_________________?

A. feeding more fuel
B. increasing flywheel size
C. heating incoming air
D. scavenging