Combustion in compression ignition engines is____________________?

A. Homogeneous
B. Heterogeneous
C. Both a. and b.
D. Laminar

The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed____________________?

A. 80°c
B. 120°c
C. 180°c
D. 240°c

Compression loss in I.C engines occurs due to_________________?

A. leaking piston rings
B. use of thick head gasket
C. clogged air-inlet slots
D. increase in clearance volume caused b bearing-bushing wear

The specific fuel consumption per BHP hour for diesel engine is approximately___________________?

A. 0.15 kg
B. 0.2 kg
C. 0.25 kg
D. 0.3 kg

The air requirement of a petrol engine during starting compared to theoretical airequired for complete combustion is___________________?

A. More
B. Loss
C. Same
D. May be more or less depending on engine capacity

Which of the following is not an interns combustion engine___________________?

A. 2-stroke petrol engine
B. 4-stroke petrol engine
C. diesel engine
D. gas turbine

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

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

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

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

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