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Heat Transfer

Heat Transfer
Trap is used to remove __________ from steam pipe lines.

Condensate
Steam
None of these
Non-condensables

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Heat Transfer
For hot feed, forward feeding as compared to backward feeding results in __________ economy.

None of these
No effect on
Decreased
Increased

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Heat Transfer
Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is

IR2
I2R
IR
None of the listed here

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Heat Transfer
(NRe.NPr)(D/L) is called the __________ number

None of these
Peclet
Graetz
Stanton

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Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

4000
9000
3000
4600

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Heat Transfer
Unsteady state heat conduction occurs, when

Temperature distribution is independent of time
Three dimensional heat flow is concerned
Heat flows in one direction only
Temperature distribution is dependent on time

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