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Internal Combustion Engines

Internal Combustion Engines
Thermal efficiency of a two stroke cycle engine is ___ a four stroke cycle engine.

Greater than
Equal to
None of the listed here
Less than

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Depressed
Contoured
Slanted
Flat

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Internal Combustion Engines
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is

Same
More or less depending on power rating
More
Less

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Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

0
100
50
120

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Internal Combustion Engines
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

120
100
50

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Internal Combustion Engines
The _________ engines can work on very lean mixture of fuel.

Compression ignition
Spark ignition
None of these
Both (A) and (B)

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