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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Q. The amount of combustible escaping uncon-sumed from the furnace, depends upon the

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Q. Cement Kiln is a

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Q. In a furnace employing forced draught as compared to induced draught,

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Q. Regenerators are installed in

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Q. Which of the following is a heat treatment furnace ?

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Q. __________ atmosphere is maintained inside an iron blast furnace.

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Q. In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?

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Q. An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.

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