Category: I.C. Engines

A. the time taken by fuel after injection (before top dead center) to reach upto auto-ignition temperature
B. time before actual fuel injection and the pump plunger starts to pump fuel
C. time corresponding to actual injection and top dead center
D. time corresopnding to actual ingition and top dead center
E. none of the above

A. not true
B. true at full load
C. true at part load
D. true at both part and full load
E. there could not be any such criterion

A. clearance volume
B. volumetric efficiency
C. ignition time
D. effective compression ratio
E. valve travel time.

A. SEA 30
B. SAE 4£
C. SAE 50
D. SAE 70
E. SAE 80

A. net efficiency
B. efficiency ratio
C. relative efficiency
D. overall efficiency
E. cycle efficiency

A. first a mild explosion followed by a bi explosion
B. first a big explosion followed by a mil explosion
C. both mild and big explosions occi simultaneously
D. never occurs
E. unpredictable

A. 1 valve
B. 2 valves
C. 3 valves
D. 4 valves
E. no valve

A. diesel engines
B. gas turbines
C. petrol engines
D. aircraft engines
E. marine engines

A. Thermal efficiency of diesel engine i about 34%
B. Theoretically correct mixture of air am petrol is approximately 15 : 1
C. High speed compression engines operate on dual combustion cycle
D. Diesel engines are compression ignition engines
E. S.I. engines are quality-governed engines

A. Lean mixture
B. Chemically correct fuel air ratio
C. Rich mixture
D. Unpredictable