Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 1: Introduction
Unit 1: Introduction
TRUE/FALSE
1. Employment opportunities for qualified electricians are currently decreasing.
ANS: F PTS: 1 REF: Opportunities in the Trade
2. The student electrician should be a high school graduate or equivalent.
ANS: T PTS: 1 REF: Qualifications for Employment
3. Electricians usually work alone.
ANS: F PTS: 1 REF: Qualifications for Employment
COMPLETION
1. Complex electrical systems are controlled by state and local building codes and the
____________________ Code®.
ANS: National Electrical Code
PTS: 1 REF: Working Conditions in the Trade
2. A first-class journeyman can advance to the position of foreman or ____________________.
ANS: contractor
PTS: 1 REF: Opportunities in the Trade
3. Because the student is also expected to continue ____________________ while earning, the trainee
must be prepared to attend school to obtain the necessary technical and related instruction.
ANS: learning
PTS: 1 REF: Responsibilities
4. An apprenticeship program is beneficial for the ____________________, employer, union, and society
because all gain from better workmanship.
ANS: trainee
PTS: 1 REF: Value of Apprenticeship Programs
1
,Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 1: Introduction
SHORT ANSWER
1. List three types of work possible in the electrical trade.
ANS:
The trade includes electrical installation in new buildings, rewiring old buildings, electrical
maintenance and repair, and troubleshooting electrical equipment and installations.
PTS: 1 REF: Description of the Trade
2. Briefly describe the educational and physical requirements for employment in the trade.
ANS:
Educational
The student should be a high school graduate or equivalent.
The student is expected to have a working knowledge of mathematics as this aids in the understanding
of important and necessary electrical formulas.
Physical
The student should be in good health and be strong enough to perform certain duties. The trade
requires a considerable amount of moving around, climbing, and working under conditions that require
muscular action.
PTS: 1 REF: Qualifications for Employment
3. Briefly describe the trainee’s responsibilities during training.
ANS:
Students are expected to take an interest in their work, and to plan and organize their work efficiently.
They are expected to be punctual, to maintain good health, to develop initiative and leadership, to
cooperate in every way, to be neat in personal appearance, and to practice safe working procedures at
all times with appropriate equipment. In addition, students are expected to keep informed regarding
new facts, ideas, and procedures of the trade. Therefore, they must be prepared to attend school to
obtain the necessary technical and related instruction.
PTS: 1 REF: Responsibilities
2
,Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 2: Electron Theory and Ohm's Law
Unit 2: Electron Theory and Ohm's Law
TRUE/FALSE
1. All liquids, gases, and solids are examples of matter in different forms.
ANS: T PTS: 1 REF: Matter
2. Two objects with unlike charges repel each other.
ANS: F PTS: 1 REF: Electrical Charges
3. The nucleus of an atom is made of protons and electrons.
ANS: F PTS: 1 REF: Protons and Neutrons
4. All electrons are alike regardless of the atom.
ANS: T PTS: 1 REF: Electrons
5. Electrons flow through a device from the negative terminal of the source to the positive terminal of the
source.
ANS: T PTS: 1 REF: Electrical Polarity
COMPLETION
1. Anything that occupies space and has weight is called ____________________.
ANS: matter
PTS: 1 REF: Matter
2. Matter is made up of smaller units called ____________________.
ANS: atoms
PTS: 1 REF: Matter
3. In the atom, there is a relatively large mass at the center called the ____________________.
ANS: nucleus
PTS: 1 REF: Atoms
3
, Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 2: Electron Theory and Ohm's Law
4. The intensity of an electrical current is measured in _____________.
ANS: amperes
PTS: 1 REF: Current
5. The property of a material that causes it to oppose the movement of electrons is called ____________.
ANS: resistance
PTS: 1 REF: Resistance
SHORT ANSWER
1. Draw a picture and describe the structure of an atom. Be sure to discuss the electrical charge of each
part.
ANS:
An atom resembles the solar system with the sun as the center around which a series a planets revolve.
In the atom, there is a relatively large mass at the center called the nucleus. Electrons, which are
negatively charged, revolve in orbital patterns around the nucleus. The nucleus is made of protons
and neutrons. The protons are positively charged, while the neutrons are electrically neutral.
PTS: 1 REF: Atoms | Protons and Neutrons | Electrons
2. Describe the three types of current.
ANS:
Direct current (DC) is the movement of electrons in one direction in a conductor. Pulsating direct
current is a current in one direction that varies in intensity at a regular interval of time. Alternating
current (AC) is a current that changes in direction and intensity at a regular interval of time.
PTS: 1 REF: Current
3. State Ohm’s Law and calculate what the current would be in a circuit if a voltage of 24 volts was
applied across a resistance of 6 ohms.
ANS:
I = E/R.
I=24 volts/6 ohms. The current would be 4 amperes.
PTS: 1 REF: Ohm's Law
4
Unit 1: Introduction
Unit 1: Introduction
TRUE/FALSE
1. Employment opportunities for qualified electricians are currently decreasing.
ANS: F PTS: 1 REF: Opportunities in the Trade
2. The student electrician should be a high school graduate or equivalent.
ANS: T PTS: 1 REF: Qualifications for Employment
3. Electricians usually work alone.
ANS: F PTS: 1 REF: Qualifications for Employment
COMPLETION
1. Complex electrical systems are controlled by state and local building codes and the
____________________ Code®.
ANS: National Electrical Code
PTS: 1 REF: Working Conditions in the Trade
2. A first-class journeyman can advance to the position of foreman or ____________________.
ANS: contractor
PTS: 1 REF: Opportunities in the Trade
3. Because the student is also expected to continue ____________________ while earning, the trainee
must be prepared to attend school to obtain the necessary technical and related instruction.
ANS: learning
PTS: 1 REF: Responsibilities
4. An apprenticeship program is beneficial for the ____________________, employer, union, and society
because all gain from better workmanship.
ANS: trainee
PTS: 1 REF: Value of Apprenticeship Programs
1
,Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 1: Introduction
SHORT ANSWER
1. List three types of work possible in the electrical trade.
ANS:
The trade includes electrical installation in new buildings, rewiring old buildings, electrical
maintenance and repair, and troubleshooting electrical equipment and installations.
PTS: 1 REF: Description of the Trade
2. Briefly describe the educational and physical requirements for employment in the trade.
ANS:
Educational
The student should be a high school graduate or equivalent.
The student is expected to have a working knowledge of mathematics as this aids in the understanding
of important and necessary electrical formulas.
Physical
The student should be in good health and be strong enough to perform certain duties. The trade
requires a considerable amount of moving around, climbing, and working under conditions that require
muscular action.
PTS: 1 REF: Qualifications for Employment
3. Briefly describe the trainee’s responsibilities during training.
ANS:
Students are expected to take an interest in their work, and to plan and organize their work efficiently.
They are expected to be punctual, to maintain good health, to develop initiative and leadership, to
cooperate in every way, to be neat in personal appearance, and to practice safe working procedures at
all times with appropriate equipment. In addition, students are expected to keep informed regarding
new facts, ideas, and procedures of the trade. Therefore, they must be prepared to attend school to
obtain the necessary technical and related instruction.
PTS: 1 REF: Responsibilities
2
,Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 2: Electron Theory and Ohm's Law
Unit 2: Electron Theory and Ohm's Law
TRUE/FALSE
1. All liquids, gases, and solids are examples of matter in different forms.
ANS: T PTS: 1 REF: Matter
2. Two objects with unlike charges repel each other.
ANS: F PTS: 1 REF: Electrical Charges
3. The nucleus of an atom is made of protons and electrons.
ANS: F PTS: 1 REF: Protons and Neutrons
4. All electrons are alike regardless of the atom.
ANS: T PTS: 1 REF: Electrons
5. Electrons flow through a device from the negative terminal of the source to the positive terminal of the
source.
ANS: T PTS: 1 REF: Electrical Polarity
COMPLETION
1. Anything that occupies space and has weight is called ____________________.
ANS: matter
PTS: 1 REF: Matter
2. Matter is made up of smaller units called ____________________.
ANS: atoms
PTS: 1 REF: Matter
3. In the atom, there is a relatively large mass at the center called the ____________________.
ANS: nucleus
PTS: 1 REF: Atoms
3
, Test Bank For Electricity 1: Devices, Circuits, and Materials
Unit 2: Electron Theory and Ohm's Law
4. The intensity of an electrical current is measured in _____________.
ANS: amperes
PTS: 1 REF: Current
5. The property of a material that causes it to oppose the movement of electrons is called ____________.
ANS: resistance
PTS: 1 REF: Resistance
SHORT ANSWER
1. Draw a picture and describe the structure of an atom. Be sure to discuss the electrical charge of each
part.
ANS:
An atom resembles the solar system with the sun as the center around which a series a planets revolve.
In the atom, there is a relatively large mass at the center called the nucleus. Electrons, which are
negatively charged, revolve in orbital patterns around the nucleus. The nucleus is made of protons
and neutrons. The protons are positively charged, while the neutrons are electrically neutral.
PTS: 1 REF: Atoms | Protons and Neutrons | Electrons
2. Describe the three types of current.
ANS:
Direct current (DC) is the movement of electrons in one direction in a conductor. Pulsating direct
current is a current in one direction that varies in intensity at a regular interval of time. Alternating
current (AC) is a current that changes in direction and intensity at a regular interval of time.
PTS: 1 REF: Current
3. State Ohm’s Law and calculate what the current would be in a circuit if a voltage of 24 volts was
applied across a resistance of 6 ohms.
ANS:
I = E/R.
I=24 volts/6 ohms. The current would be 4 amperes.
PTS: 1 REF: Ohm's Law
4
