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Heat Transfer

Heat Transfer
In SI units, thermal conductivity is expressed in

Watt/m4. °K
Watt/m². °K
Watt/m.°K
Watt/m². °K

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Heat Transfer
Heat flux, as defined in heat flow is analogous to __________ in electricity flow.

None of these
Current
Voltage
Resistance

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Heat Transfer
Corrosiveness of steam condensate is due to the presence of

Dissolved O₂
Both A & B
Neither A nor B
CO₂

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Heat Transfer
The film thickness for laminar film condensation on vertical surface __________ from top to bottom.

Cummulatively decreases
Remains constant
Cummulatively increases
And the surface conductance increase

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Heat Transfer
Steam traps are provided in steam carrying pipelines to

remove condensate and inert gases
release excess steam pressure by bleeding steam.
condense steam
none of the listed here

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Heat Transfer
In a single effect evaporator, the economy is

< 1
None of these
1
> 1

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