102a

Question 1

Psia at absolute pressure is

Answer 1

14.7

Question 2

Psig at absolute pressure is

Answer 2

0

Question 3

What is British thermal unit

Answer 3

The heat required to raise the temperature of one pound of water by one degree fernheit

Question 4

Boyles law is

Answer 4

A decrease in the volume and an increase in pressure, temperature is always constant

Question 5

Adiabatic compression is

Answer 5

The compression of refrigerant gas without removing or adding heat

Question 6

Adiabatic process

Answer 6

A change in pressure, volume, and temperature of a vapor without changing the vapors heat content

Question 7

Back pressure is

Answer 7

Low or suction pressure

Question 8

Charles law 1

Answer 8

A change in temperature and volume but constant pressure

Question 9

Charles law 2 is

Answer 9

A change in absolute pressure and absolute temperature with constant volume

Question 10

IDLH

Answer 10

Immediately dangerous to life and health

Question 11

Dalton’s law of partial pressures

Answer 11

The total pressure of mixture gases is the sum of the individual pressure is each gas

Question 12

Density is

Answer 12

Mass/volume

Question 13

What is enthalpy

Answer 13

The heat in 1 pound of a substance from zero base point 0°C -40°F

Question 14

Entropy is

Answer 14

Measurement of energy transfer where the energy is moved but not used for work

Question 15

Pascals law

Answer 15

All pressures are equal in all directions

Question 16

Canadas measurement system is

Answer 16

Metric

Question 17

The us and British measurement system is

Answer 17

Imperial

Question 18

A manometer reads

Answer 18

Liquid movement due to applied gas pressure

Question 19

A ton of refrigerant is (BTU/hr)

Answer 19

12,000 BTU/HR

Question 20

Threshold limit value (TLV) is

Answer 20

The refrigerant concentration in the air the people breath when they work there hours

Question 21

Turbulent flow is

Answer 21

The chaotic flow of a fluid within the pipe

Question 22

Heat is defined as

Answer 22

Energy in the form of molecular molecules

Question 23

Specific heat is

Answer 23

The amount of heat required to change 1kg of a substance by 1 kelvin degree or 1lb of substance by 1 Fahrenheit

Question 24

The sensible heat being removed from the gas or liquid at saturation is called

Answer 24

Desuperheating

Question 25

Radiation travels in

Answer 25

Light waves

Question 26

Three methods of heat transfer

Answer 26

Conduction
Convection
Radiation

Question 27

Convection is

Answer 27

Heat transfer in liquids or gases, fast molecules vibrate in a space

Question 28

Conduction is

Answer 28

Molecules increase in vibration from an energy source to the next

Question 29

Thermodynamics is the study of

Answer 29

Changing heat energy into mechanical energy and vise versa

Question 30

The first law of thermodynamics is

Answer 30

Energy cannot be created or destroyed

Question 31

The second law of thermodynamics is

Answer 31

Heat moves from a high heat zone to a low heat zone

Question 32

Can heat go from a low zone to high

Answer 32

Only if moveable is convertible to mechanical

Question 33

Water to steam is how many btu

Answer 33

970

Question 34

Water to solid btu count is

Answer 34

144btu

Question 35

Specific heat for water, ice and steam

Answer 35

1.00
0.5
0.46

Question 36

Q total is equal to

Answer 36

All sensible and latent heat

Question 37

Is temperature heat

Answer 37

No

Question 38

Temperature is the average amount of

Answer 38

Molecular motion in a substance

Question 39

Low and high refrigerants temperature is

Answer 39

-20 and 39