Q. Which of the following statement is wrong?

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Q. The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

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Q. The function of a piston in a steam engine is

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Q. The high steam and low water safety valve is not used in

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

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Q. The actual power generated in the engine cylinder is called

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Q. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

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Q. A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.

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Q. The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.

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Q. The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.

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Q. In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

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Q. In a boiler, the heat is lost

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Q. The crown of the fire box is made hemispherical in order to resist intense heat in the fire box.

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Q. For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be

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Q. Water tube boilers are

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Q. Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

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Q. The working pressure range for a La-Mont boiler is

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Q. The draught in locomotive boilers is produced by a

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Q. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.

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Q. There is about 15 to 20% of coal saving when an economiser is used in a boiler.

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