Q. Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of

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Q. Ceramic recuperators compared to metallic recuperators for the same duty

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Q. Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of

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Q. In reverberatory furnace, charge is heated mainly by

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Q. An example of a periodic furnace is the

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Q. Ostwald charts are meant for

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Q. Maximum heat transfer in high temperature furnaces is by

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Q. Fuel used in B.F. stove is

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Q. Tunnel kilns are usually used for

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Q. The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent.

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Q. Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by

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Q. Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by

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Q. Which of the following is a natural draft furnace ?

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Q. To reduce the stack loss, heat recovery from flue gas can be done by

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Q. Large tonnage of refractory bricks are dried in a

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Q. Pulverised fuel fired furnaces employ __________ fuel firing.

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Q. Which of the following is not a directly fired furnace ?

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Q. Heat transfer rate to the stock/charge in the furnace does not depend upon the

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Q. Power required in case of forced draught as compared to induced draught (for the same draught produced) is

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Q. Means for giving direction to the circulation of gases in furnaces are

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