HEAT AND MASS TRANSFER QUIZ

Planck's constant

Kinematic viscosity

Thermal conductivity

Universal gas constant

When a liquid exchanges heat with a gas

In case of Newtonian fluids

None of these

In heat exchanger design as a safety factor

Two

One

Three

Four

Inversely proportional to density of substance

All of these

Inversely proportional to specific heat

Directly proportional to the thermal conductivity

One could place either insulation on either side

One should take into account the steam temperature before deciding as to which insulation is put where

The better insulation must be put outside

The better insulation must be put inside

It is impossible to transfer heat from low temperature source to t high temperature source

Heat transfer by radiation requires no medium

Heat transfer in most of the cases takes place by combination of conduction, convection and radiation

All bodies above absolute zero emit radiation

Prandtl number, Grashoff's number

Grashoff's number

Reynold's number

Reynold's number, Grashoff's number

Planck's law

Stefan's law

Fourier's law

Wien’s law

A complete separation between hot and cold fluids

Direct mixing of hot and cold fluids

Generation of heat again and again

Flow of hot and cold fluids alternately over a surface

Water coolers

Room air conditioners

All of these

Domestic refrigerators