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Furnace Technology

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

650
250
850
1000

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

15
40
85
70

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Furnace Technology
An example of indirectly heated furnace is the

Reheating furnace
Muffle furnace
None of these
Soaking pit

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Furnace Technology
Which is a continuous furnace?

None of these
Coke ovens
Glass tank furnace
Annealing furnace

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Furnace Technology
The heating capacity of continuous reheating furnace depends upon the

Emissivity of the stock
Hearth area and furnace temperature
Ratio of wall surface to stock surface
All of these

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Furnace Technology
Rotary kilns are used in the

Calcination of limestone & dolomite
Both A and B
Cement manufacture
Neither A nor B

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