,TESTBANK for Electricity for Refrigeration, Heating,
and Air Conditioning, 11th Edition Russell E. Smith
Notes
1- The file is chapter after chapter.
2- We have shown you 10 pages.
3- The file contains all Appendix and Excel
sheet if it exists.
4- We have all what you need, we make
update at every time. There are many
new editions waiting you.
5- If you think you purchased the wrong file
You can contact us at every time, we can
replace it with true one.
Our email:
,Name: Class: Date:
Chapter 01 Electrical Safety
1. One of the most important things for a technician to remember when dealing with electrical circuits is
to _________________ them.
a. Avoid
b. Respect
c. De-energize
d. Disconnect
ANSWER: b
RATIONALE: It is important for a technician to always remember to respect electrical
circuits because of the danger they pose.
POINTS: 1
DIFFICULTY: Low
REFERENCES: Introduction
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 1:41 AM
DATE MODIFIED: 4/5/2022 4:57 AM
2. An electrical shock occurs when all or part of a person’s body ___________________ electrical
current.
a. Becomes the path for
b. Is insulated against
c. Touches insulated conductors carrying
d. Is near equipment using
ANSWER: a
RATIONALE: Electrical shock occurs when all or part of a person’s body becomes the
path for electrical current flow.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
human body.
DATE CREATED: 4/5/2022 1:43 AM
DATE MODIFIED: 4/5/2022 4:57 AM
3. Which of the following can occur when electrical current flows through the human body?
a. Experience a stinging sensation
b. Serious injury
c. Death
d. All the choices are possible
ANSWER: d
RATIONALE: Electrical current flowing through the human body can result in the person
Copyright Cengage Learning. Powered by Cognero. Page 1
,Name: Class: Date:
Chapter 01 Electrical Safety
experiencing a stinging sensation, serious injury, or even death.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
human body.
DATE CREATED: 4/5/2022 1:45 AM
DATE MODIFIED: 4/5/2022 4:57 AM
4. Which of the following voltages will technicians work in close proximity to in the residential HVAC
field?
a. 24 volts
b. 120 volts
c. 240 volts
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians will be required to work around live circuits carrying voltages
such as 24 volts, 120 volts, and 240 volts in the residential HVAC field.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 1:46 AM
DATE MODIFIED: 4/5/2022 4:58 AM
5. A person will experience electric shock if their body becomes part of an electrical circuit by making
contact with the _____________________.
a. L1 and L2 conductors in a disconnect switch
b. L1 and neutral conductors on a furnace
c. L2 and grounding conductors on a condensing unit
d. All of the choices will result in electrical shock
ANSWER: d
RATIONALE: A person will experience electrical if part of their body makes contact
from one hot line to another hot line, any hot line to the neutral, or any hot
line to a grounded conductor or surface.
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
Copyright Cengage Learning. Powered by Cognero. Page 2
,Name: Class: Date:
Chapter 01 Electrical Safety
human body.
DATE CREATED: 4/5/2022 1:49 AM
DATE MODIFIED: 4/5/2022 4:58 AM
6. Which of the following paths of electrical current flow through the body has the highest risk of causing
severe injury or death?
a. From the thumb to the index finger on the right hand
b. From the left hand to the left elbow
c. From the right hand to the left hand
d. From the right knee to the right foot
ANSWER: c
RATIONALE: Any path through the body that takes electrical current flow near the heart
carries a high risk of causing severe injury or death.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 1:50 AM
DATE MODIFIED: 4/5/2022 4:58 AM
7. The risk of serious injury or death from electrical shock increases if the path of electrical current flow
crosses or comes near the ________________.
a. Arm
b. Heart
c. Leg
d. Shoulder
ANSWER: b
RATIONALE: The risk of serious injury or death increases if electrical current flows near
or across the heart.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 1:52 AM
DATE MODIFIED: 4/5/2022 4:58 AM
8. Electrical current flowing near the heart can cause a potentially fatal condition in which the hear
flutters in a manner that ceases to pump blood through the body known as
____________________________.
a. Cardiomyopathy
Copyright Cengage Learning. Powered by Cognero. Page 3
,Name: Class: Date:
Chapter 01 Electrical Safety
b. Ventricular tachycardia
c. Ventricular fibrillation
d. Cardiac ablation
ANSWER: c
RATIONALE: Electrical current flowing near the heart can cause ventricular fibrillation, a condition
flutters and ceases to beat in a manner that pumps blood through the body. This cond
if the heart is not quickly returned to a normal rhythm through immediate medical att
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from an electr
DATE CREATED: 4/5/2022 1:53 AM
DATE MODIFIED: 4/5/2022 4:58 AM
9. What is the main difference between a conductor used as a grounding connection and a conductor used
as a neutral connection?
a. Current flows through the grounding conductor and not the neutral conductor during normal
circuit operation
b. The neutral conductor is there for safety and the grounding conductor is part of the normal
operating circuit
c. The grounding conductor is for safety and does not normally carry current while the neutral
conductor is a current carrying part of the circuit.
d. Grounding conductors are optional while neutral conductors are required for all electrical
circuits
ANSWER: c
RATIONALE: Grounding conductors are primarily for safety and do not carry electrical
current when everything is operating properly, while neutral conductors
are a current carrying part of the circuit.
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.4 - Understand the important of properly
grounding tools and appliances.
DATE CREATED: 4/5/2022 1:59 AM
DATE MODIFIED: 4/5/2022 4:59 AM
10. Death from electric shock is possible when current flow through the body reaches
______________________.
a. 0.015 ampere
b. 15 amperes
c. 1,000 milliamperes
d. 0.5 ampere
Copyright Cengage Learning. Powered by Cognero. Page 4
,Name: Class: Date:
Chapter 01 Electrical Safety
ANSWER: a
RATIONALE: Death from electric shock becomes possible when current flow through the
body reaches 0.015 ampere.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 2:01 AM
DATE MODIFIED: 4/5/2022 4:59 AM
11. Electromotive force is ___________________________________.
a. Measured in volts
b. The force used to measure locomotive power
c. Measured in amperes
d. A measurement of electrical power
ANSWER: a
RATIONALE: Electromotive force is measured in volts.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:45 AM
DATE MODIFIED: 4/5/2022 4:59 AM
12. Electrical current leaving the intended path and flowing through the air, often in an explosive and
violent nature, best defines __________________.
a. Ground fault
b. Inductive reactance
c. Arc flash
d. Atmospheric conductions
ANSWER: c
RATIONALE: An arc flash occurs when electrical current leaves the intended path and
flows through the air, often in an explosive and violent manner.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
Copyright Cengage Learning. Powered by Cognero. Page 5
,Name: Class: Date:
Chapter 01 Electrical Safety
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:46 AM
DATE MODIFIED: 4/5/2022 4:59 AM
13. An arc flash can be caused by which of the following conditions?
a. Dropping tools into electrical equipment
b. Damaged insulation on conductors
c. Loose or improper conductor connections
d. All of these conditions can cause arc flash
ANSWER: d
RATIONALE: An electrical arc flash can be cause by dropping tools into electrical
equipment, damaged insulation on conductors, and by loose or improper
connection of conductors.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.5 - Safely use electrical hand tools and electrical
meters.
DATE CREATED: 4/5/2022 4:47 AM
DATE MODIFIED: 4/5/2022 5:00 AM
14. Which of the following are ways technicians can reduce the risk of being injured by an arc flash?
a. Wear appropriate personal protective equipment
b. Turn off electrical power to the equipment when possible
c. Work using safe practices and insulated tools
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians can help reduce the risk of injury from arc flash by wearing
appropriate personal protective equipment, turning the electrical power off
to equipment when possible, using insulated tools, and by following safe
work practices.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:48 AM
DATE MODIFIED: 4/5/2022 5:00 AM
15. Which of the following choices is a potential hazard technicians face when working with electricity?
a. Electrical shock
b. Arc flash and burns
Copyright Cengage Learning. Powered by Cognero. Page 6
,Name: Class: Date:
Chapter 01 Electrical Safety
c. Fire
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians face many hazards when working with electricity such as electric shock,
and fire.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from an electr
DATE CREATED: 4/5/2022 4:50 AM
DATE MODIFIED: 4/5/2022 4:51 AM
16. Which of the following choices is the best course of action for a rescuer assisting a shock victim who
is still in contact with the source of electrical energy?
a. Assess the victim and begin CPR if necessary
b. Take hold of the victim and pull them off the electrical energy source
c. Turn off the source of electrical energy if the disconnect switch is near by
d. Call 911 and wait for the first responders to arrive before taking any action
ANSWER: c
RATIONALE: If possible, the rescuer should turn off the electrical energy source before
assisting a shock victim that is still contacting the electrical energy source.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.2 Dealing with Shock Victims
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:51 AM
DATE MODIFIED: 4/5/2022 4:52 AM
17. What first aid measure should be administered as soon as possible for a shock victim that is not
breathing nor can a heartbeat be detected?
a. Cardiopulmonary resuscitation
b. Cardiovascular restoration
c. Cardio muscular reconditioning
d. All of the choices are correct
ANSWER: a
RATIONALE: Cardiopulmonary resuscitation (CPR) should be administered as soon as
possible to a shock victim that is not breathing nor can a heartbeat be
detected.
POINTS: 1
DIFFICULTY: High
Copyright Cengage Learning. Powered by Cognero. Page 7
, Name: Class: Date:
Chapter 01 Electrical Safety
REFERENCES: 1.2 Dealing with Shock Victims
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:52 AM
DATE MODIFIED: 4/5/2022 4:53 AM
18. The minimum standards that must be met for the safe installation of electrical systems is specified by
the ______________.
a. OSHA
b. NEC
c. AHRI
d. ACCA
ANSWER: b
RATIONALE: The National Electrical Code (NEC) specifies the minimum standards that
must be met for the safe installation of electrical systems.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.3 National Electrical Code (NEC)
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:53 AM
DATE MODIFIED: 4/18/2022 5:56 AM
19. How often is the National Electrical Code revised?
a. Every year
b. Every five years
c. Every eight years
d. Every four years
ANSWER: d
RATIONALE: The National Electrical Code is revised every four years.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.3 National Electrical Code (NEC)
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:54 AM
DATE MODIFIED: 4/18/2022 4:37 AM
20. Which article in the National Electrical Code specifically covers air conditioning and refrigeration
equipment?
Copyright Cengage Learning. Powered by Cognero. Page 8
and Air Conditioning, 11th Edition Russell E. Smith
Notes
1- The file is chapter after chapter.
2- We have shown you 10 pages.
3- The file contains all Appendix and Excel
sheet if it exists.
4- We have all what you need, we make
update at every time. There are many
new editions waiting you.
5- If you think you purchased the wrong file
You can contact us at every time, we can
replace it with true one.
Our email:
,Name: Class: Date:
Chapter 01 Electrical Safety
1. One of the most important things for a technician to remember when dealing with electrical circuits is
to _________________ them.
a. Avoid
b. Respect
c. De-energize
d. Disconnect
ANSWER: b
RATIONALE: It is important for a technician to always remember to respect electrical
circuits because of the danger they pose.
POINTS: 1
DIFFICULTY: Low
REFERENCES: Introduction
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 1:41 AM
DATE MODIFIED: 4/5/2022 4:57 AM
2. An electrical shock occurs when all or part of a person’s body ___________________ electrical
current.
a. Becomes the path for
b. Is insulated against
c. Touches insulated conductors carrying
d. Is near equipment using
ANSWER: a
RATIONALE: Electrical shock occurs when all or part of a person’s body becomes the
path for electrical current flow.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
human body.
DATE CREATED: 4/5/2022 1:43 AM
DATE MODIFIED: 4/5/2022 4:57 AM
3. Which of the following can occur when electrical current flows through the human body?
a. Experience a stinging sensation
b. Serious injury
c. Death
d. All the choices are possible
ANSWER: d
RATIONALE: Electrical current flowing through the human body can result in the person
Copyright Cengage Learning. Powered by Cognero. Page 1
,Name: Class: Date:
Chapter 01 Electrical Safety
experiencing a stinging sensation, serious injury, or even death.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
human body.
DATE CREATED: 4/5/2022 1:45 AM
DATE MODIFIED: 4/5/2022 4:57 AM
4. Which of the following voltages will technicians work in close proximity to in the residential HVAC
field?
a. 24 volts
b. 120 volts
c. 240 volts
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians will be required to work around live circuits carrying voltages
such as 24 volts, 120 volts, and 240 volts in the residential HVAC field.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 1:46 AM
DATE MODIFIED: 4/5/2022 4:58 AM
5. A person will experience electric shock if their body becomes part of an electrical circuit by making
contact with the _____________________.
a. L1 and L2 conductors in a disconnect switch
b. L1 and neutral conductors on a furnace
c. L2 and grounding conductors on a condensing unit
d. All of the choices will result in electrical shock
ANSWER: d
RATIONALE: A person will experience electrical if part of their body makes contact
from one hot line to another hot line, any hot line to the neutral, or any hot
line to a grounded conductor or surface.
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.1 - Explain the effect of electric current on the
Copyright Cengage Learning. Powered by Cognero. Page 2
,Name: Class: Date:
Chapter 01 Electrical Safety
human body.
DATE CREATED: 4/5/2022 1:49 AM
DATE MODIFIED: 4/5/2022 4:58 AM
6. Which of the following paths of electrical current flow through the body has the highest risk of causing
severe injury or death?
a. From the thumb to the index finger on the right hand
b. From the left hand to the left elbow
c. From the right hand to the left hand
d. From the right knee to the right foot
ANSWER: c
RATIONALE: Any path through the body that takes electrical current flow near the heart
carries a high risk of causing severe injury or death.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 1:50 AM
DATE MODIFIED: 4/5/2022 4:58 AM
7. The risk of serious injury or death from electrical shock increases if the path of electrical current flow
crosses or comes near the ________________.
a. Arm
b. Heart
c. Leg
d. Shoulder
ANSWER: b
RATIONALE: The risk of serious injury or death increases if electrical current flows near
or across the heart.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 1:52 AM
DATE MODIFIED: 4/5/2022 4:58 AM
8. Electrical current flowing near the heart can cause a potentially fatal condition in which the hear
flutters in a manner that ceases to pump blood through the body known as
____________________________.
a. Cardiomyopathy
Copyright Cengage Learning. Powered by Cognero. Page 3
,Name: Class: Date:
Chapter 01 Electrical Safety
b. Ventricular tachycardia
c. Ventricular fibrillation
d. Cardiac ablation
ANSWER: c
RATIONALE: Electrical current flowing near the heart can cause ventricular fibrillation, a condition
flutters and ceases to beat in a manner that pumps blood through the body. This cond
if the heart is not quickly returned to a normal rhythm through immediate medical att
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from an electr
DATE CREATED: 4/5/2022 1:53 AM
DATE MODIFIED: 4/5/2022 4:58 AM
9. What is the main difference between a conductor used as a grounding connection and a conductor used
as a neutral connection?
a. Current flows through the grounding conductor and not the neutral conductor during normal
circuit operation
b. The neutral conductor is there for safety and the grounding conductor is part of the normal
operating circuit
c. The grounding conductor is for safety and does not normally carry current while the neutral
conductor is a current carrying part of the circuit.
d. Grounding conductors are optional while neutral conductors are required for all electrical
circuits
ANSWER: c
RATIONALE: Grounding conductors are primarily for safety and do not carry electrical
current when everything is operating properly, while neutral conductors
are a current carrying part of the circuit.
POINTS: 1
DIFFICULTY: High
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.4 - Understand the important of properly
grounding tools and appliances.
DATE CREATED: 4/5/2022 1:59 AM
DATE MODIFIED: 4/5/2022 4:59 AM
10. Death from electric shock is possible when current flow through the body reaches
______________________.
a. 0.015 ampere
b. 15 amperes
c. 1,000 milliamperes
d. 0.5 ampere
Copyright Cengage Learning. Powered by Cognero. Page 4
,Name: Class: Date:
Chapter 01 Electrical Safety
ANSWER: a
RATIONALE: Death from electric shock becomes possible when current flow through the
body reaches 0.015 ampere.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from
an electrical shock.
DATE CREATED: 4/5/2022 2:01 AM
DATE MODIFIED: 4/5/2022 4:59 AM
11. Electromotive force is ___________________________________.
a. Measured in volts
b. The force used to measure locomotive power
c. Measured in amperes
d. A measurement of electrical power
ANSWER: a
RATIONALE: Electromotive force is measured in volts.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:45 AM
DATE MODIFIED: 4/5/2022 4:59 AM
12. Electrical current leaving the intended path and flowing through the air, often in an explosive and
violent nature, best defines __________________.
a. Ground fault
b. Inductive reactance
c. Arc flash
d. Atmospheric conductions
ANSWER: c
RATIONALE: An arc flash occurs when electrical current leaves the intended path and
flows through the air, often in an explosive and violent manner.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
Copyright Cengage Learning. Powered by Cognero. Page 5
,Name: Class: Date:
Chapter 01 Electrical Safety
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:46 AM
DATE MODIFIED: 4/5/2022 4:59 AM
13. An arc flash can be caused by which of the following conditions?
a. Dropping tools into electrical equipment
b. Damaged insulation on conductors
c. Loose or improper conductor connections
d. All of these conditions can cause arc flash
ANSWER: d
RATIONALE: An electrical arc flash can be cause by dropping tools into electrical
equipment, damaged insulation on conductors, and by loose or improper
connection of conductors.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.5 - Safely use electrical hand tools and electrical
meters.
DATE CREATED: 4/5/2022 4:47 AM
DATE MODIFIED: 4/5/2022 5:00 AM
14. Which of the following are ways technicians can reduce the risk of being injured by an arc flash?
a. Wear appropriate personal protective equipment
b. Turn off electrical power to the equipment when possible
c. Work using safe practices and insulated tools
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians can help reduce the risk of injury from arc flash by wearing
appropriate personal protective equipment, turning the electrical power off
to equipment when possible, using insulated tools, and by following safe
work practices.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:48 AM
DATE MODIFIED: 4/5/2022 5:00 AM
15. Which of the following choices is a potential hazard technicians face when working with electricity?
a. Electrical shock
b. Arc flash and burns
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,Name: Class: Date:
Chapter 01 Electrical Safety
c. Fire
d. All of the choices are correct
ANSWER: d
RATIONALE: Technicians face many hazards when working with electricity such as electric shock,
and fire.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.1 Electrical Injuries
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.2 - Understand the injuries that are possible from an electr
DATE CREATED: 4/5/2022 4:50 AM
DATE MODIFIED: 4/5/2022 4:51 AM
16. Which of the following choices is the best course of action for a rescuer assisting a shock victim who
is still in contact with the source of electrical energy?
a. Assess the victim and begin CPR if necessary
b. Take hold of the victim and pull them off the electrical energy source
c. Turn off the source of electrical energy if the disconnect switch is near by
d. Call 911 and wait for the first responders to arrive before taking any action
ANSWER: c
RATIONALE: If possible, the rescuer should turn off the electrical energy source before
assisting a shock victim that is still contacting the electrical energy source.
POINTS: 1
DIFFICULTY: Medium
REFERENCES: 1.2 Dealing with Shock Victims
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:51 AM
DATE MODIFIED: 4/5/2022 4:52 AM
17. What first aid measure should be administered as soon as possible for a shock victim that is not
breathing nor can a heartbeat be detected?
a. Cardiopulmonary resuscitation
b. Cardiovascular restoration
c. Cardio muscular reconditioning
d. All of the choices are correct
ANSWER: a
RATIONALE: Cardiopulmonary resuscitation (CPR) should be administered as soon as
possible to a shock victim that is not breathing nor can a heartbeat be
detected.
POINTS: 1
DIFFICULTY: High
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, Name: Class: Date:
Chapter 01 Electrical Safety
REFERENCES: 1.2 Dealing with Shock Victims
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.3 - Know the basic procedures in the event of an
electrical shock.
DATE CREATED: 4/5/2022 4:52 AM
DATE MODIFIED: 4/5/2022 4:53 AM
18. The minimum standards that must be met for the safe installation of electrical systems is specified by
the ______________.
a. OSHA
b. NEC
c. AHRI
d. ACCA
ANSWER: b
RATIONALE: The National Electrical Code (NEC) specifies the minimum standards that
must be met for the safe installation of electrical systems.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.3 National Electrical Code (NEC)
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:53 AM
DATE MODIFIED: 4/18/2022 5:56 AM
19. How often is the National Electrical Code revised?
a. Every year
b. Every five years
c. Every eight years
d. Every four years
ANSWER: d
RATIONALE: The National Electrical Code is revised every four years.
POINTS: 1
DIFFICULTY: Low
REFERENCES: 1.3 National Electrical Code (NEC)
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: E4H_SMTH_23_1.6 - Follow the principles of safety when installing
and servicing heating and air-conditioning equipment.
DATE CREATED: 4/5/2022 4:54 AM
DATE MODIFIED: 4/18/2022 4:37 AM
20. Which article in the National Electrical Code specifically covers air conditioning and refrigeration
equipment?
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