Q. In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed,

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Q. The thermal efficiency of diesel engines on weak mixtures is

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Q. The injection pressure in a diesel engine is about

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Q. U233 is produced

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Q. The pressure at the end of compression, in diesel engines, is approximately

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Q. The detonation is also called knocking or pinking.

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Q. The pre-ignition occurs before the spark is produced whereas detonation develops after the introduction of spark.

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Q. The energy released during the fission of one atom of Uranium - 235 in million electron volts is about

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Q. In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.

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Q. In a four stroke cycle petrol engine, the charge is ignited at

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Q. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to

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Q. Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is

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Q. In a diesel engine, the duration between the time of injection and ignition, is known as

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Q. Ordinary water is sometimes used as moderator when enriched uranium is used as a fuel in nuclear power plants.

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Q. The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the

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Q. The effective inhibitor of pre-ignition is

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Q. The purpose of testing an internal combustion engine is

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Q. The thermal efficiency of diesel engines is about

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Q. The brake power of a diesel engine, keeping other parameters constant, can be increased by

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Q. In diesel engines, the fuel is injected in the form of very fine spray, into the engine cylinder, which gets ignited due to high temperature of the compressed air.

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