In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

More than 45°C

Less than 45°C

Equal to 45°C

Initially decreases and remains constant thereafter

More than 45°C

Less than 45°C

Equal to 45°C

Initially decreases and remains constant thereafter

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Heat Transfer
Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping

Both the tube sheets fixed

Both the tube sheets floating

The top tube sheet floating and bottom tube sheet fixed

The top tube sheet fixed and the bottom tube-sheet floating

Both the tube sheets fixed

Both the tube sheets floating

The top tube sheet floating and bottom tube sheet fixed

The top tube sheet fixed and the bottom tube-sheet floating

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Heat Transfer
The thickness of condensate layer in filmwise condensation depends on the

Surface configuration

Liquid flow rate from the surface

Condensation rate

All of these

Surface configuration

Liquid flow rate from the surface

Condensation rate

All of these

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Heat Transfer
Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that

There is no internal heat generation

Boundary surfaces are isothermal

Constant temperature gradient exists

Material is anisotropic

There is no internal heat generation

Boundary surfaces are isothermal

Constant temperature gradient exists

Material is anisotropic

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Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

First increases upto a certain temperature and then becomes constant

Remains same

Increases

Decreases

First increases upto a certain temperature and then becomes constant

Remains same

Increases

Decreases

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Heat Transfer
Water always boils when its

Temperature reaches 100° C

Saturated vapour pressure is less than the atmospheric pressure

Saturated vapour pressure equals the external pressure on its surface

Vapour pressure equals 76 cm of Hg

Temperature reaches 100° C

Saturated vapour pressure is less than the atmospheric pressure

Saturated vapour pressure equals the external pressure on its surface

Vapour pressure equals 76 cm of Hg

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Heat Transfer

Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping

Heat Transfer The thickness of condensate layer in filmwise condensation depends on the

Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that

Heat Transfer With increase in temperature, the thermal conductivity of most liquids

Heat Transfer Water always boils when its

Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer
Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping

Heat Transfer
The thickness of condensate layer in filmwise condensation depends on the

Heat Transfer
Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that

Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

Heat Transfer
Water always boils when its