chatgpt

Question 2

The basic requirement for heat transfer.

Answer 2

Presence of temperature difference

Question 3

A form of energy that can be transferred from one system to another as a result of temperature difference

Answer 3

heat

Question 4

The theory proposed by Antoine Lavoisier that states heat is a fluid-like substance.

Answer 4

Caloric theory

Question 5

The person who challenged the caloric theory through experiments in 1843.

Answer 5

James P. Joule

Question 6

Energy can neither be created nor destroyed; it can only change forms

Answer 6

The first law of thermodynamics.or the Conservation of Energy

Question 7

The unit of energy in the SI system.

Answer 7

Joule (J)

Question 8

The energy needed to raise the temperature of 1 gram of water at 14.5°C by 1°C.

Answer 8

Calorie

Question 9

The term for the sum of all microscopic forms of energy of a system.

Answer 9

Internal energy

Question 10

The rate of heat transfer per unit area normal to the direction of heat transfer.

Answer 10

Heat flux

Question 11

The mode of heat transfer that involves the transfer of energy from more energetic particles to adjacent less energetic ones.

Answer 11

Conduction

Question 12

The equation known as Fourier’s law of heat conduction.

Answer 12

kA t1-t2 over L

Question 13

The unit of power.

Answer 13

Watt (W)

Question 14

The type of energy associated with the atomic bonds in a molecule.

Answer 14

Chemical energy

Question 15

The material described as having a high value of thermal conductivity, meaning it is a good heat conductor.

Answer 15

High thermal conductivity

Question 16

The energy transfer that occurs when an object is moved over a distance by an external force.

Answer 16

Work

Question 17

The type of energy associated with the phase of a system.

Answer 17

Latent energy

Question 18

The energy balance equation for a stationary closed system with no work involved.

Answer 18

ΔU=Q-W

Question 19

The mode of heat transfer that can take place in solids, liquids, or gases.

Answer 19

Conduction

Question 20

The device that involves mass flow in and out of a system, often modeled as control volumes.

Answer 20

Control volumes

Question 21

Mass flow rate The concept describing the amount of mass flowing through a cross section of a flow device per unit time.

Answer 21

Mass flow rate

Question 22

A form of energy related to the molecular structure of a system and the degree of molecular activity.

Answer 22

Microscopic energy

Question 23

The unit of energy in the English system.

Answer 23

British thermal unit (Btu)

Question 24

The term for energy required to raise the temperature of a unit mass of a substance by one degree.

Answer 24

Specific heat

Question 25

The equation for internal energy in terms of specific heat.

Answer 25

delta U = mC(change of T)

Question 26

The unit of energy required to raise the temperature of 1 lbm of water at 60°F by 1°F.

Answer 26

Btu

Question 27

The law that states the total energy content of a control volume during a steady-flow process remains constant.

Answer 27

Energy balance

Question 28

The material property indicating the rate of heat transfer through a unit thickness per unit area per unit temperature difference.

Answer 28

Thermal conductivity

Question 29

The measure of the ability of a material to conduct heat.

Answer 29

Thermal conductivity

Question 30

The science that deals with the determination of the rates of energy transfers.

Answer 30

Heat transfer

Question 31

The term for energy needed to push a fluid and maintain flow.

Answer 31

Flow energy

Question 32

The term for the energy interactions at the surface in both steady and transient conditions.

Answer 32

Surface energy balance

Question 33

The substance described as incompressible if its specific volume (or density) does not change with temperature or pressure.

Answer 33

Incompressible substance

Question 34

The rate of heat transfer per unit area.

Answer 34

Heat flux

Question 35

the specific heat of an ideal gas depends only on

Answer 35

temperature

Question 36

The volume of a fluid flowing through a pipe or duct per unit time.

Answer 36

Volume flow rate

Question 37

The measure of energy transfer that occurs when an object is moved over a distance by an external force.

Answer 37

Work

Question 38

The type of heat associated with the kinetic energy of molecules.

Answer 38

Sensible heat

Question 39

The principle that states energy can neither be created nor destroyed; it can only change forms.

Answer 39

Conservation of energy

Question 40

The type of system that is analyzed under steady operating conditions involving mass flow in and out.

Answer 40

Steady-flow systems

Question 41

The term for energy transferred through conduction in the direction of decreasing temperature.

Answer 41

Temperature gradient

Question 42

The type of problem dealing with the determination of heat transfer rate for an existing system at a specified temperature difference.

Answer 42

Rating problems

Question 43

The problem dealing with the determination of the size of a system to transfer heat at a specified rate for a specified temperature difference.

Answer 43

Sizing problems

Question 44

The person who showed heat can be generated continuously through friction.

Answer 44

Benjamin Thompson (Count Rumford)

Question 45

The term for the energy associated with the random motion of atoms and molecules defined in the mid-19th century.

Answer 45

Heat energy

Question 46

The type of engineering systems that produce work, such as car engines and hydraulic turbines.

Answer 46

Work-producing systems

Question 47

The law describing the transfer of energy as heat from the higher-temperature medium to the lower-temperature one until thermal equilibrium is reached.

Answer 47

Zeroth law of thermodynamics