The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

None, A is just a number

W/m.k

W/m.k²

W/m

None, A is just a number

W/m.k

W/m.k²

W/m

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
With increase in temperature, the thermal conductivity of non-metallic amorphous solids

remains same

increases

None of the listed here

decreases

remains same

increases

None of the listed here

decreases

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law.

Wien's displacement

Stefan-Boltzman's

Planck's

None of these

Wien's displacement

Stefan-Boltzman's

Planck's

None of these

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
Double pipe heat exchangers are used

because it occupies less floor area

because it is less costly

when heat transfer area required is very high

when heat transfer area required is very low

because it occupies less floor area

because it is less costly

when heat transfer area required is very high

when heat transfer area required is very low

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
For what value of Prandtl number, the Col-burn analogy is valid ?

l to 50

0.06 to 120

0.6 to 120

1 to 103

l to 50

0.06 to 120

0.6 to 120

1 to 103

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally

Remains unchanged

Increases exponentially

Increases

Decreases

Remains unchanged

Increases exponentially

Increases

Decreases

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer

Heat Transfer The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer With increase in temperature, the thermal conductivity of non-metallic amorphous solids

Heat Transfer The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law.

Heat Transfer Double pipe heat exchangers are used

Heat Transfer For what value of Prandtl number, the Col-burn analogy is valid ?

Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally

Heat Transfer
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer
With increase in temperature, the thermal conductivity of non-metallic amorphous solids

Heat Transfer
The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law.

Heat Transfer
Double pipe heat exchangers are used

Heat Transfer
For what value of Prandtl number, the Col-burn analogy is valid ?

Heat Transfer
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally