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Heat and Mass Transfer

Heat and Mass Transfer
Unit of thermal conductivity in M.K.S. units is

K cal/hr m² °C
K cal/kg m² °C
K cal m/hr m² °C
K calm/hr °C

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Heat and Mass Transfer
Heat is transferred by all three modes of transfer, viz. conduction, convection and radiation in

Boiler
Electric heater
Refrigerator condenser coils
Steam condenser

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Heat and Mass Transfer
The emissive power of a body depends upon its

All of these
Temperature
Wave length
Physical nature

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Heat and Mass Transfer
The amount of radiation mainly depends upon the

All of these
Type of surface of the body
Nature of the body
Temperature of the body

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Heat and Mass Transfer
The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as

Reflectivity
Transmissivity
Emissivity
Intensity of radiation

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Heat and Mass Transfer
All radiations in a black body are

Transmitted
Reflected
Absorbed
Refracted

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MORE MCQ ON Heat and Mass Transfer

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