REVIEW QUESTIONS

Question 1

What are the three states in which matter is commonly found

Answer 1

Solid
liquid
and gases

Question 2

____________ is the term used for water when it is in the solid state

Answer 2

Ice

Question 3

In what direction does a solid exerts force

Answer 3

Downward

Question 4

In what direction does it liquid exerts force?

Answer 4

Outward

Question 5

Vapor exerts pressure in what direction

Answer 5

All directions

Question 6

Define density

Answer 6

Is the weight per unit of volume of a substance

Question 7

Define specific gravity

Answer 7

Is the property used to compare the density of various substance

Question 8

Describe specific volume

Answer 8

Is the amount of space a pound of a vapor or a gas will occupy

Question 9

Why does an object weigh less on the moon then on earth

Answer 9

Because the moon has less gravity than earth

Question 10

The density of tungsten is 1210 lb/ft. what would be its specific volume?

Answer 10

1 divide density

1 divide by 1210 = 0.00082645

Question 11

The specific volume of red brass is 0.001865 ft/lb. what would be its density

Answer 11

1 divided by density

1 divided by 0.001865

Question 12

Aluminum has a density of 171 lb/ft. What would be its specific gravity

Answer 12

????

Question 13

Four pounds of a gas occupy 10 ft. What would be a total volume density and specific gravity

Answer 13

???

Question 14

Why is information regarding the pacific volume of gases important to the designer of air conditioning heating and refrigeration equipment

Answer 14

????

Question 15

Who’s law states that the volume of a gas various inversely with the absolute pressure as long as the temperature remains constant

Answer 15

Boyle’s law

Question 16

At a constant pressure how does a volume of gas vary with respect to that absolute temperature

Answer 16

??

Question 17

Describe daltons law as it relates to a confined mixture of gases

Answer 17

???

Question 18

What are the two types of energy most frequently used or Considered in this industry

Answer 18

Electrical and heat energy

Question 19

How were fossil fuel’s form

Answer 19

??

Question 20

___________its the time rate of doing work

Answer 20

Force x distance

Question 21

States the formula for determining the amount of work accomplished in a particular task

Answer 21

Force times distance

Question 22

If an air conditioning compressor weighing 300 pounds had to be lifted 4 feet to be mounted on a base how many feet of work might be accomplish?

Answer 22

300 x 4 =1200

Question 23

Describe horsepower and list the three quantities needed to determine horsepower

Answer 23

A horse power equal 33,000 lb to a height of 1 ft in 1 minute
To determine a horsepower, force x distance x time

Question 24

How many watts of electrical energy are equal to one horse power

Answer 24

746 watts

Question 25

How many BTU of heat can be produced by 4 kwh of electricity

Answer 25

??

Question 26

How many BTU/h would be produced in a 12 KW electric heater

Answer 26

12x3413=40,956

Question 27

What unit of energy does the power company charge the consumer for

Answer 27

Kilowatts-hour

Question 28

Matter is a substance that Occupies space and has?

Answer 28

Mass