A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when

Heat Transfer
A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when

KA>2 kB

CPA < CPB

KA < 0.5kB

CPA > CPB

KA>2 kB

CPA < CPB

KA < 0.5kB

CPA > CPB

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Heat Transfer
Heat exchangers operating, when the asymptotic range is reached,

None of these

Provide very large heat transfer co-efficient

Results in making part of the heating surface inactive

Results in abruptly increased velocity

None of these

Provide very large heat transfer co-efficient

Results in making part of the heating surface inactive

Results in abruptly increased velocity

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Heat Transfer
Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by

Eddies current

Conduction

None of these

Convection

Eddies current

Conduction

None of these

Convection

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Heat Transfer
In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is

Linear

None of these

Parabolic

Hyperbolic

Linear

None of these

Parabolic

Hyperbolic

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Heat Transfer
In which mode of heat transfer, the Biot number is important?

Radiation

Transient heat conduction

Natural convection

Forced convection

Radiation

Transient heat conduction

Natural convection

Forced convection

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Heat Transfer
Steam trap is used to

None of these

Condense the steam flowing in the pipeline

Stop the supply of steam

Remove water resulting from partial condensation of steam

None of these

Condense the steam flowing in the pipeline

Stop the supply of steam

Remove water resulting from partial condensation of steam

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Heat Transfer

Heat Transfer Heat exchangers operating, when the asymptotic range is reached,

Heat Transfer Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by

Heat Transfer In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is

Heat Transfer In which mode of heat transfer, the Biot number is important?

Heat Transfer Steam trap is used to

Heat Transfer
Heat exchangers operating, when the asymptotic range is reached,

Heat Transfer
Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by

Heat Transfer
In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is

Heat Transfer
In which mode of heat transfer, the Biot number is important?

Heat Transfer
Steam trap is used to