UNIT 2

Question 1

Volume that each pound of gas occupies. Unit of measure is.ft3/lb.

Answer 1

Specific volume

Question 2

Matter that exerts all of its force downward

Answer 2

Solid

Question 3

Energy can be neither created nor destroyed, but can be converted from one form to another

Answer 3

The Law of conversion of energy

Question 4

Force that matter applies to a supporting surface when it is at rest

Answer 4

Weight

Question 5

Total pressure of a confined mixture of non-reacting (inert) Gases is the sum of the pressures of each of the gases in the mixture

Answer 5

Dalton’s law

Question 6

Converting electron flow to usable energy

Answer 6

Magnetism

Question 7

Rate of doing work expressed as ft-lb/min

Answer 7

Horsepower

Question 8

Natural gas oil and coal are examples of this

Answer 8

Fossil fuel

Question 9

The capacity for doing work

Answer 9

Energy

Question 10

A force moving an object expressed as:
Lbs x ft= ft-lb

Answer 10

Work

Question 11

True or false
A substance that has a specific gravity greater than the specific gravity of water (1) will sink in water

Answer 11

True

Question 12

True or false
The correct unit of measurement for specific volume is lb/ft3

Answer 12

False

Question 13

True or false
Tare weight (TW) is the weight of a cylinder when it is filled with water

Answer 13

False

Question 14

True or false
The weight of a substance is the product of the substances, mass and the force of gravity, pulling down on it

Answer 14

True

Question 15

Charles law can be expressed as
V1/T1=V2/T2

Answer 15

True

Question 16

The density of a substance multiplied by its specific volume will always see a product of 1

Answer 16

True

Question 17

ft3/lb=

Answer 17

Specific volume

Question 18

3413 BTUs/hr

Answer 18

1KW

Question 19

746 watts

Answer 19

1 hp (horsepower)

Question 20

Lb/ft3=

Answer 20

Density

Question 21

Unitless number

Answer 21

Specific gravity

Question 22

Ft-lb=

Answer 22

Work

Question 23

The specific volume of dry air is 13.33 ft.³/lb. what is its density?

Answer 23

1/13.33=0.07 lb/ft3

Question 24

Specific volume is the term used to…

Answer 24

Indicate the amount of space that the weight of gas will occupy

Question 25

How many BTUs are there in 12 kW of electrical power?

Answer 25

3413×12 = 40,956

Question 26

When discarding disposable cylinders of CFC’s, HCFCs, HFC’s or HFO’s….

Answer 26

All of the above

Question 27

True or false Only a few ounces of refrigerant mixed with nitrogen is considered a leak Trace gas and may be released without recovery

Answer 27

True

Question 28

When calculating cylinder capacity at what temperature is the value of the liquid density of the refrigerant used?

Answer 28

130°F

Question 29

True or false R-744 carbon dioxide CO2 generally does not need to be recovered

Answer 29

True

Question 30

Records of leak inspections, initial leak verification, and follow up verification test must be kept on file for three years. Who maintains those records?

Answer 30

The owner/operator of the equipment

Question 31

True or false The weight of a substance is the product of the substances, mass and the force of gravity, pulling down on it

Answer 31

True