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Mechanical Engineering · all questions

Internal Combustion Engines (I.C. Engines)
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Engine pistons are usually made of aluminium alloy because it

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The reason for supercharging in any engine is to

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Morse test can be conducted for

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

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Alpha-methyl-naphthalene (C11H10) has a cetane number of

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The scavenging efficiency of a four stroke cycle diesel engine is

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Scavenging is usually done to increase

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Which of the following medium is compressed in a Diesel engine cylinder?

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Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m.

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Number of working strokes per min. for a two stroke cycle engine is _________ the speed of the engine in r.p.m.

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The thermodynamic cycle on which the petrol engine works, is

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The thermal efficiency of petrol and gas engines is about

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The thermal efficiency of diesel engines is about

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The size of inlet valve of an engine in comparison to exhaust valve is

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A spark plug gap is kept from

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When crude oil is heated, then which of the following hydrocarbon is given off first?

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Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?

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Which of the following does not relate to a compression ignition engine?

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Which of the following does not relate to a spark ignition engine?

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The output of a diesel engine can be increased without increasing the engine revolution or size in following way

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