Q. In order to eliminate knocking in compression ignition engines, there should be

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Q. The air standard efficiency of an I.C. engine depends on

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Q. The mean effective pressure of a diesel engine having fixed compression ratio will __________ if cut off ratio decreases.

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Q. The knocking tendency in spark ignition engines may be decreased by

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Q. In a two stroke engine, the working cycle is completed in two revolutions of the crankshaft.

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Q. A reactor capable of converting a fertile material into fissile isotopes is called regenerative reactor.

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Q. Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

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Q. In a petrol engine, the mixture has the lowest pressure at the

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

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Q. The increase in intake temperature of internal combustion engines will __________ efficiency.

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Q. The reflectivity depends upon

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Q. In a petrol engine, the charge is ignited with the help of a spark plug.

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Q. Reflector in nuclear power plants __________ neutron leakage.

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Q. Number of working strokes per min. for a two stroke cycle engine are __________ the speed of the engine in r.p.m.

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Q. The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

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Q. A two stroke cycle engine occupies larger floor area than a four stroke cycle engine.

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Q. Spark plugs in automobiles generally have a gap between

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Q. The injection of fuel by external source is not required in case of engines working on Otto cycle.

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Q. The running cost of a petrol engine is __________ than that of a diesel engine.

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Q. In a petrol engine, if diesel is used, then the engine will

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