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Furnace Technology

Furnace Technology
Cement Kiln is a

Batch furnace
Natural draft furnace
Tunnel Kiln
Rotary Kiln

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Furnace Technology
The function of an economiser in a boiler is to preheat the

Combustion air
Feedwater
Furnace oil
Pulverised coal

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Furnace Technology
Low stack loss indicates the

Oxygen enrichment of combustion air
Efficient use of fuel
Use of sub-stoichiometric air for combustion
Inefficient use of fuel

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Furnace Technology
Calcination of limestone to produce lime is done in a __________ kiln.

Rotary
Tunnel
Vertical shaft
Both B and C

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

Waste heat boiler
None of these
Recuperator
Regenerator

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Furnace Technology
In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of

Combustion of coal by supplying it around the burner
Drying of coal
Transportation of coal
Preheating the primary air

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