Mechanical Engineering MCQs

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

A. 80°c
B. 120°c
C. 180°c
D. 240°c

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

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

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

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

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

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

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

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