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Internal Combustion Engines

Internal Combustion Engines
Compression loss in I.C engines occurs due to

Leaking piston rings
Clogged air inlet slots
All of these
Use of thick head gasket

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Internal Combustion Engines
The frictional power (F.P.) is given by

F.P. =
F.P. = I.P. -
P.
P.
F.P. =
P. - I.P.
F.P. = I.P./
P./I.P.

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Internal Combustion Engines
The volumetric efficiency of a well designed engine may be

40 to 60%
60 to 70%
75 to 90%
30 to 40%

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Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

2000-2500°C
500-1000°C
1000-1500°C
1500-2000°C

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Internal Combustion Engines
Scavenging is usually done to increase

Power output
Fuel consumption
Thermal efficiency
Speed

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Internal Combustion Engines
The calorific value of gaseous fuels is expressed in terms of

kcal/m3
kcal/kg
kcal
kcal/m²

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MORE MCQ ON Internal Combustion Engines

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