The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is

Heat Transfer
The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is

333W/m².K

287 W/m².K

1200W/m².K

894W/m².K

333W/m².K

287 W/m².K

1200W/m².K

894W/m².K

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Heat Transfer
At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?

0.5

< 0.1

> 0.6

< 0.5

0.5

< 0.1

> 0.6

< 0.5

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Heat Transfer
In forced convection, the Nusselt number is a function of

Re and Pr

Re and Gr

Re and Sc

Pr and Gr

Re and Pr

Re and Gr

Re and Sc

Pr and Gr

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Heat Transfer
Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place

Between two bodies not in physical contact with each other

Between two bodies in physical contact with each other

From one part of a body to the another part of the same body

Both B & C

Between two bodies not in physical contact with each other

Between two bodies in physical contact with each other

From one part of a body to the another part of the same body

Both B & C

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Heat Transfer
Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.

Thermal conductivity

Density

Viscosity

Boiling point (at the same pressure)

Thermal conductivity

Density

Viscosity

Boiling point (at the same pressure)

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Heat Transfer
Dropwise condensation is promoted on a/an __________ surface.

Smooth

Glazed

Oily

Coated

Smooth

Glazed

Oily

Coated

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Heat Transfer

Heat Transfer The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is

Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?

Heat Transfer In forced convection, the Nusselt number is a function of

Heat Transfer Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place

Heat Transfer Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.

Heat Transfer Dropwise condensation is promoted on a/an __________ surface.

Heat Transfer
The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is

Heat Transfer
At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?

Heat Transfer
In forced convection, the Nusselt number is a function of

Heat Transfer
Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place

Heat Transfer
Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.

Heat Transfer
Dropwise condensation is promoted on a/an __________ surface.