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FURNACE TECHNOLOGY QUIZ

In low or standard frequency induction furnace, heat is produced by the

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Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.

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Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.

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In salt bath furnace, heat is transferred to the charge mainly by

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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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The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent.

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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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Which of the following is the most suitable for preheating combustion air above 650°C ?

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Which one is not an induced draught furnace?

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Which is a continuous furnace?

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