Q. Main gas valve in a gaseous fuel burner is a __________ valve.

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Q. Artificial draught produced by a fan in the furnace can be controlled by the

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Q. Regenerators as compared to recuperators for the same duty

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Q. Circulation of gases in furnace is caused by the

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Q. Furnace aerodynamics is related to the __________ in the furnace.

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Q. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.

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Q. Fuel economy in an industrial furnace operation can not be achieved by the use of

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Q. The function of an economiser in a boiler is to preheat the

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Q. Which furnace employs an I.D. fan for the removal of flue gases from the furnace ?

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Q. Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.

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Q. The advantages of firing pulverised coal in the furnace lies in the fact that, it

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Q. Which is not accomplished in an underfired furnace ?

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Q. In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of

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Q. Rate of heat release in a furnace, which is the measure of heat intensity is defined as

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Q. Oxygen enrichment of combustion air does not result in increase of the

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Q. An example of recuperative furnace is the

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Q. An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

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Q. Which of the following variables affects the furnace capacity ?

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Q. In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

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Q. In which of the following furnaces, the gases are sucked through the stock bed from below?

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