The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m².K. At steady state, the temperature of the right face in °C is

Heat Transfer
The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m².K. At steady state, the temperature of the right face in °C is

63.8

48.7

77.2

71.2

63.8

48.7

77.2

71.2

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Heat Transfer
If heat transfer rate varies with the time, it is termed as

Steady state conduction

Monochromatic radiation

None of these

Forced convection

Steady state conduction

Monochromatic radiation

None of these

Forced convection

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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

9000

4600

3000

4000

9000

4600

3000

4000

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Heat Transfer
Kirchoff's law is applicable to

Total radiation only

Only volumes and not to surfaces

Both A and B

Monochromatic radiation only

Total radiation only

Only volumes and not to surfaces

Both A and B

Monochromatic radiation only

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Heat Transfer
Thermal conductivity of a gas at low density, __________ with increase in temperature.

Increases

Remains unchanged

May increase or decrease; depends on the gas

Decreases

Increases

Remains unchanged

May increase or decrease; depends on the gas

Decreases

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Heat Transfer
Baffles are provided in heat exchangers to increase the

Heat transfer rate

Heat transfer area

Heat transfer co-efficient

Fouling factor

Heat transfer rate

Heat transfer area

Heat transfer co-efficient

Fouling factor

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Heat Transfer

Heat Transfer If heat transfer rate varies with the time, it is termed as

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

Heat Transfer Kirchoff's law is applicable to

Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature.

Heat Transfer Baffles are provided in heat exchangers to increase the

Heat Transfer
If heat transfer rate varies with the time, it is termed as

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

Heat Transfer
Kirchoff's law is applicable to

Heat Transfer
Thermal conductivity of a gas at low density, __________ with increase in temperature.

Heat Transfer
Baffles are provided in heat exchangers to increase the