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Furnace Technology

Furnace Technology
Which one shows the diagramatic heat balance in a furnace?

Cox chart
Sankey diagram
Ostwald chart
None of these

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Furnace Technology
Main gas valve in a gaseous fuel burner is a __________ valve.

Butterfly
None of these
Gate
Globe

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Furnace Technology
Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.

130
180
80
250

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Furnace Technology
Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a

Carbon resistance furnace
Reducing atmosphere
Furnace employing neutral atmosphere
Furnace employing negative pressure

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Furnace Technology
Advantages of use of preheated combustion air are

Increase in flame temperature
Reduction in scale losses
Saving in fuel consumption
All of these

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

Current flow through a heating element
Combination of induced current and skin effect
None of these
Induction and resistance

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