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.k²

W/m

W/m.k

None, A is just a number

W/m.k²

W/m

W/m.k

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Heat Transfer
Heat transfer by __________ may not necessarily require the presence of a medium

natural convection

none of the listed here

coduction

radiation

natural convection

none of the listed here

coduction

radiation

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Heat Transfer
Log mean temperature difference (LMTD) cannot be used, if

there exists an unsteady state

heat transfer co-efficient over the entire heat exchanger is not constant

none of the listed here

the heat capacity is not constant and there is a phase change.

there exists an unsteady state

heat transfer co-efficient over the entire heat exchanger is not constant

none of the listed here

the heat capacity is not constant and there is a phase change.

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Heat Transfer
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is

60000

6000

48000

24000

60000

6000

48000

24000

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Heat Transfer
In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred

By direct contact of hot flue gas with air

None of these

Through a metallic wall

By heating an intermediate material (like chequor bricks) and then heating the air from this hot material

By direct contact of hot flue gas with air

None of these

Through a metallic wall

By heating an intermediate material (like chequor bricks) and then heating the air from this hot material

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Heat Transfer
The units of resistance to heat transfer is

J.m⁻².K⁻¹

J.m⁻¹.K⁻¹

W.m⁻².K⁻¹

W⁻¹m²K

J.m⁻².K⁻¹

J.m⁻¹.K⁻¹

W.m⁻².K⁻¹

W⁻¹m²K

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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 Heat transfer by __________ may not necessarily require the presence of a medium

Heat Transfer Log mean temperature difference (LMTD) cannot be used, if

Heat Transfer A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is

Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred

Heat Transfer The units of resistance to heat transfer is

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
Heat transfer by __________ may not necessarily require the presence of a medium

Heat Transfer
Log mean temperature difference (LMTD) cannot be used, if

Heat Transfer
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is

Heat Transfer
In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred

Heat Transfer
The units of resistance to heat transfer is