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HEAT TRANSFER

Heat Transfer
At constant temperature, the thermal conductivities of gases __________ with rise in pressure.

May increase or decrease; depends on the pressure
Increase
Remain unchanged
Decrease

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Heat Transfer
The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.

Compressor
Steam ejector
Vacuum pump
Entrainment separator

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Heat Transfer
The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.

Temperature of the body
Nature of the body
None of these
Wavelength of radiation

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

Resistance
Current
Voltage
None of these

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

Remains constant
Cummulatively increases
And the surface conductance increase
Cummulatively decreases

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