A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is

Heat Transfer
A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is

150

133

160

125

150

133

160

125

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Heat Transfer
The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)

h0/K

h0/2K

2K/h0

K/h0

h0/K

h0/2K

2K/h0

K/h0

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Heat Transfer
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

Counter flow with process stream on shell side

Parallel flow with process stream on shell side

Parallel flow with process stream on tube side

Counter flow with process stream on tube side

Counter flow with process stream on shell side

Parallel flow with process stream on shell side

Parallel flow with process stream on tube side

Counter flow with process stream on tube side

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Heat Transfer
In SI units, fouling factor is expressed in

m²°K

W/m²°K

m°K/W

m²°K/W

m²°K

W/m²°K

m°K/W

m²°K/W

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Heat Transfer
The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

(ΔT)⁴

(ΔT)³

√(ΔT)

(ΔT)²

(ΔT)⁴

(ΔT)³

√(ΔT)

(ΔT)²

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Heat Transfer
The purpose of providing a 'catchall' in the vapor line of an evaporator is to

Vent the non-condensible gases

Regulate the vapor flow

Create vacuum

Arrest the entrained liquid

Vent the non-condensible gases

Regulate the vapor flow

Create vacuum

Arrest the entrained liquid

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer

Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)

Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

Heat Transfer In SI units, fouling factor is expressed in

Heat Transfer The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

Heat Transfer The purpose of providing a 'catchall' in the vapor line of an evaporator is to

Heat Transfer
The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)

Heat Transfer
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

Heat Transfer
In SI units, fouling factor is expressed in

Heat Transfer
The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

Heat Transfer
The purpose of providing a 'catchall' in the vapor line of an evaporator is to