Q. In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is __________ the atmospheric pressure.

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Q. Blow off cock in a boiler is used to

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Q. The selection of type and size of a steam boiler depends upon

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Q. The maximum steam pressure in a Locomotive boiler is limited to

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Q. The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks

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Q. The main object of a boiler trial is

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Q. The artificial draught is produced by

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Q. In cross compounding, the cylinders are arranged

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Q. The motion of a D-slide valve in a steam engine is simple harmonic.

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Q. A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

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Q. A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.

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Q. The high steam and low water safety valve is used to blow off steam when the

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Q. The cylinder condensation or missing quantity may be reduced by

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Q. The actual vacuum in a condenser is equal to

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Q. The function of a superheater is to heat the feed water by utilising the heat in the exhaust flue gases before leaving through the chimney.

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Q. Willian's line follows the law (where b = A constant representing the shape of the Willian's line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

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Q. When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by

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Q. The cut-off ratio is the reciprocal of expansion ratio,

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Q. In a receiver type compound engine, the high pressure and low pressure cylinders

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Q. The damper in a steam boiler is provided to control the draught (i.e. rate of flow of air) and thus regulate the rate of generation of steam.

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