Conduction

Question 1

is energy in transit

Answer 1

Heat

Question 2

is energy transferred as a result of a temperature difference

Answer 2

Heat

Question 3

is a measure of the amount of energy possessed by the molecules of a substance

Answer 3

Temperature

Question 4

It is a relative measure of how hot or cold a substance is and can be used to predict the direction of heat transfer.

Answer 4

Temperature

Question 5

discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy between physical systems.

Answer 5

Heat transfer

Question 6

It is a thermal energy in transit due to a spatial temperature difference.

Answer 6

Heat transfer

Question 7

movement of heat from one body to another by means of conduction, convection, or radiation.

Answer 7

Heat transfer

Question 8

the rate of heat transfer, 𝑸̇ per unit area.

Answer 8

Heat flux

Question 9

is a measure of a substance’s ability to transfer heat through itself

Answer 9

Thermal conductivity

Question 10

is the ∆T that most accurately represents the ∆T for a heat exchanger

Answer 10

Log mean temperature difference

Question 11

represents a measure of the ability to transfer heat through a stagnant film layer.

Answer 11

Local heat transfer coefficient

Question 12

is the measure of the ability of a heat exchanger to transfer heat from one fluid to another.

Answer 12

Overall heat transfer coefficient

Question 13

is the temperature of the fluid that best represents the majority of the fluid which is not physically connected to the heat transfer site.

Answer 13

Bulk temperature

Question 14

The rate of heat flow a simple homogenous solid is directly proportional to the area measure normal to the direction of flow and the temperature gradient in the direction of heat flow.

Answer 14

Fourier’s law of heat conduction

Question 15

The concept of overall coefficient of heat transfer is used in case of heat transfer by

Answer 15

Conduction and convection

Question 16

Unit of thermal conductivity in SI units is

Answer 16

J/ m-K-sec and J/m^2-sec

Question 17

The unit of overall coefficient of heat transfer is

Answer 17

Kcal/m^2-hr-C or W/m^2-K

Question 18

Process of heat transfer from one particle of the body to another without the actual motion of particles

Answer 18

Conduction

Question 19

Process of heat transfer from one particle of the body to another by the actual motion of particles

Answer 19

Convection

Question 20

Process of heat transfer from a hot body to a cold body, in a straight line without affecting the intervening medium

Answer 20

Radiation

Question 21

Heat conducted through per unit area and unit thick face per unit time when temperature difference between opposite faces is unity

Answer 21

Thermal conductivity

Question 22

Heat transfer takes place as per

Answer 22

Second law of thermodynamics

Question 23

Heat of an pbject is known as

Answer 23

Temperature

Question 24

Metal

Answer 24

Silver
Copper
Aluminum

Question 25

Non metals

Answer 25

Marble
Fire brick
Cement concrete
Glass
Common brick

Question 26

Insulating material

Answer 26

Asbestos
Wood
Magnesia
Cork
Glass wool
Static air
Insulating fiber board

Question 27

The interaction of the molecules

Answer 27

Thermal contact

Question 28

It is when they achieved same temperature there is no sharing of kinetic energy

Answer 28

Thermal equilibrium

Question 29

Unidirectional flow of heat through a homogeneous plane wall

Answer 29

Steady state