In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will

Heat Transfer
In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will

Either increase or decrease; depends on the coolant flow rate

Remain unchanged

Decrease

Increase

Either increase or decrease; depends on the coolant flow rate

Remain unchanged

Decrease

Increase

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Heat Transfer
The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is

14.6 kW/m²

16.5 kW/m²

11.2 kW/m²

12.0 kW/m²

14.6 kW/m²

16.5 kW/m²

11.2 kW/m²

12.0 kW/m²

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Heat Transfer
Pick out the correct equation.

JH = (St)2/3(Pr) = f/2

JH = (St)(Pr)2/3 = f/2

JH = (St)(Pr)1/3 = f/2

JH = (St)1/3(Pr) = f/2

JH = (St)2/3(Pr) = f/2

JH = (St)(Pr)2/3 = f/2

JH = (St)(Pr)1/3 = f/2

JH = (St)1/3(Pr) = f/2

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

(ΔT)²

(ΔT)⁴

√(ΔT)

(ΔT)³

(ΔT)²

(ΔT)⁴

√(ΔT)

(ΔT)³

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Heat Transfer
For a perfectly transparent surface (like gases), the

All of these

Transmissivity = 1

Reflectivity = 0

Absorptivity = 0

All of these

Transmissivity = 1

Reflectivity = 0

Absorptivity = 0

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Heat Transfer
Leidenfrost point is a term concerned with the

Boiling of a liquid on a hot surface

Heat transfer between two highly viscous liquids

Condensation of the saturated vapor on a cold surface

Concentration of a corrosive solution by evaporation

Boiling of a liquid on a hot surface

Heat transfer between two highly viscous liquids

Condensation of the saturated vapor on a cold surface

Concentration of a corrosive solution by evaporation

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Heat Transfer

Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will

Heat Transfer The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is

Heat Transfer Pick out the correct equation.

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

Heat Transfer For a perfectly transparent surface (like gases), the

Heat Transfer Leidenfrost point is a term concerned with the

Heat Transfer
In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will

Heat Transfer
The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is

Heat Transfer
Pick out the correct equation.

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

Heat Transfer
For a perfectly transparent surface (like gases), the

Heat Transfer
Leidenfrost point is a term concerned with the