Lee's disc method

How many methods are used to determine thermal conductivity?

• 1

• 2

• 3

• 4

Forbe's method is used to determine

• absolute conductivity of metals

• thermal conductivity of good conductors

• thermal conductivity of bad conductors

• none

The thermal conductivity of bad conductor is determined by

• Searle's method

• Lee's disc method

• Radial Flow method

• Both b and c

The experimental of Forbe's method consist of

• one part

• two parts

• three parts

• four parts

In Lee's disc method , In the first part of experiment, heat is radiated from

• top, bottom and curved surface

• Bottom and curved surface

• Top surface

• Curved surface

In Lee's disc method , In the second part of experiment, heat is radiated from

• top surface

• top, bottom and curved surface

• bottom and curved surface

• bottom surface

Resist the flow of heat to and from the body is called

• thermal insulation

• thermal conduction

• thermal resistance

• thermal radiation

Example for organic material is

• Silk

• Wool

• sugarcane fiber

• All the above

Heat exchanger means

• transfer heat between two or more fluids at different temperature

• transfer heat between two or more fluids at same temperature

• transfer heat between two fluids at different temperature

• transfer heat between two fluids at same temperature

Example of direct contact heat exchanger is

• Cooling tower

• Jet condenser

• Feed heater

• All