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Internal Combustion Engines

Internal Combustion Engines
A diesel engine, during suction stroke, draws

A mixture of diesel and air
None of these
Air only
Diesel only

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Internal Combustion Engines
The scavenging efficiency of a four stroke cycle diesel engine is

Between 50 and 85%
Between 85 and 95%
Between 95 and 100%
Below 50%

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Internal Combustion Engines
The turbine of the turboprop engine is ___ that of the turbojet engine.

Same as
Smaller than
Bigger than
None of the listed here

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Internal Combustion Engines
A petrol engine has compression ratio from

25 to 40
10 to 15
15 to 25
6 to 10

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Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

0
100
50
120

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Internal Combustion Engines
The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called

Mechanical efficiency
Indicated thermal efficiency
Overall efficiency
Volumetric efficiency

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