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.Management Sciences
Category: I.C. Engines
Sulphur content in diesel oil should not be more than_________________?
A. 10%
B. 5%
C. 1%
D. 0.1%
E. 0.01%
The system of lubrication used for motor cycles and scooters is by________________?
A. forced lubrication system
B. splash lubrication
C. applying grease under pressure
D. wet sump method
E. mixing about 5% lub oil with petrol
It the temperature of intake air in IC engines is lowered, then its efficiency will_______________________?
A. increase
B. decrease
C. remain same
D. increase upto certain limit and then decrease
E. decrease upto certain limit and then in-crease
Method of governing used in petrol engine is________________?
A. quantity governing
B. quality governing
C. combined governing
D. partial governing
E. hit and miss governing
The air-fuel ratio of the petrol engine is controlled by__________________?
A. fuel pump
B. governor
C. injector
D. carburettor
E. scavenging
The m.e.p. of a petrol engine first increases as the fuel air ratio is increased and then decreases on further increase in fuel air ratio. The M.E.P is maximum in the zone of________________?
A. lean mixture
B. chemically correct mixture
C. rich mixture
D. unpredictable
E. none of the above
Combustion in compression ignition engines is____________________?
A. homogeneous
B. heterogeneous
C. both A. and B.
D. laminar
E. turbulent
Violent sound pulsations within the cylinder of an I.C. engine are caused due to_________________?
A. heavy turbulence
B. improved scavenging
C. heavy supercharging
D. detonation
E. preignition
The ash content in diesel oil should bot be more than_______________?
A. 1%
B. 5%
C. 0.1%
D. 0.01%
E. 0.001%
A heat engine utilises the_________________?
A. calorific value of oil
B. low heat value of
C. high heat value of oil
D. mean heat value of oil
E. all of the above
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