Refrigeration Final

Question 1

What is defined as “the science of producing and maintaining temperature below the surrounding atmosphere”?

Answer 1

refrigeration

Question 2

What is the measure of the intensity of the heat of an area called?

Answer 2

temperature

Question 3

Atmospheric pressure at seas level is what?

Answer 3

14.7 psia

Question 4

Refrigerants in refrigeration systems ______ while changing a liquid to a gas and ______ when changing from a gas to a liquid.
A) release heat. Absorb heat
B) gain heat. Retain heat
C) discharge heat. Collect heat
D) absorb heat. Release heat

Answer 4

D) absorb heat. Release heat

Question 5

The vapor pressure of a liquid ______ when heat is applied until boiling occurs and the liquid _____.
A) increases. Vaporizes
B) decreases. Contracts
C) condenses. Chills
D) increases. Contracts

Answer 5

A) increases. Vaporizes

Question 6

Which law states that energy can neither be created nor destroyed, but can be converted from one type to another?

Answer 6

The first law of thermodynamics

Question 7

Which law states that heat always travels from a warm object to a colder one?

Answer 7

The second law of thermodynamics

Question 8

For refrigeration, specific heat is usually expressed how?

Answer 8

btu/Pound/°F

Question 9

The latent heat required to change the state of 1 lb. Of water into ice is?

Answer 9

144 BTU

Question 10

A condition of both pressure and temperature at which both liquid and vapor can exist in the same container simultaneously:

Answer 10

Saturation temperature

Question 11

Identify component number one from the drawing
A) metering device
B) evaporator
C) compressor
D) condenser
E) strainer/ dryer

Answer 11

A) metering device

Question 12

Identify component number 4 from the drawing
A) metering device
B) evaporator
C) compressor
D) condenser
E) strainer/ dryer

Answer 12

D) condenser

Question 13

Identify component number 2 from the drawing
A) metering device
B) evaporator
C) compressor
D) condenser
E) strainer/ dryer

Answer 13

B) evaporator

Question 14

Identify number five from the drawing:
A) high pressure side
B) low pressure side
C) high pressure liquid side
D) low pressure vapor side

Answer 14

C) high pressure liquid side

Question 15

1 ton of refrigeration is equal to:
A) 288,000 BTU/24 hours
B) 200 BTU/ minute
C) 3.33 BTU/second
D) all of the above
E) none of the above

Answer 15

D) all of the above

Question 16

Proper humidification______the rate of evaporation from the skin:
A) reduces
B) increases
C) has no effect on
D) kills any mildew that can appear from

Answer 16

A) reduces

Question 17

The total heat contained in a substance, which is the sum of sensible heat and latent heat is:

Answer 17

heat of enthalpy

Question 18

What does the abbreviation NOA stand for?

Answer 18

National occupational analysis

Question 19

Which of the following statements is true for a NOA?
A) The NOA forms the basis for the Alberta apprenticeship training program
B) The NOA is developed by HRSDC staff from their perceptions of the trade
C) The NOA is developed by staff from the host jurisdiction
D) The NOA is the sole document used to develop a Red seal exam

Answer 19

D) The NOA is the sole document used to develop a red seal exam

Question 20

What are the three types of questions used on a red seal exam?

Answer 20

Recall, application and critical thinking

Question 21

Why is it important to obtain a red seal endorsement?

Answer 21

The red seal is the industry accepted standard for excellence in a trade

Question 22

Which statement is true?
A) The noa for a specific trade should be studied to prepare for a provincial apprenticeship exam
B) in an NOA a task is bigger in scope than a block
C) industry practitioners are people that own businesses in a trade
D) industry practitioners are people that work Hands-On in a trade

Answer 22

D) industry practitioners are people that work Hands-On in a trade

Question 23

What does the acronym PAC stand for?

Answer 23

Provincial apprenticeship committee

Question 24

Alberta’s apprenticeship and industry training system relies on the support of____to keep its programs current and relevant:
A) PAC
B) LAC
C) Alberta apprenticeship and industry training board
D) Alberta occupational committees
E) all of the above

Answer 24

E) all of the above

Question 25

The____relates the standards and requirements for training and certification in programs under the apprenticeship and industry training act and is mandated by meeting the requirements and exercising the responsibilities outlined in the act and regulations:
A) PAC
B) LAC
C) Alberta apprenticeship and industry training board
D) Alberta occupational committees
E) all of the above

Answer 25

C) Alberta apprenticeship and industry training board

Question 26

The____provides the legislative framework for the apprenticeship and industry training system by providing registration and counseling services to apprentices and employers. Working with the institutions to coordinate technical training and certify apprentices and others who meet industry standards through the apprenticeship and industry training act, Alberta Enterprise and advanced education:
A) PAC
B) LAC
C) Alberta apprenticeship and industry training board
D) Alberta occupational committees
E) The Alberta provincial government

Answer 26

E) The Alberta provincial government

Question 27

What is used to keep track of an apprentice’s progress on the job?

Answer 27

Record book (Blue book)

Question 28

Feedback from coaching that focuses on____is the most effective:
A) only negative results
B) only positive results
C) no results, just errors
D) all results

Answer 28

D) all results

Question 29

The three types of people who are responsible for apprenticeship training are:

Answer 29

Supervisors, employers and apprentices

Question 30

List the three main things a journeyman must do to be an effective coach:

Answer 30

Tell you, show you, and do the task with you