300 Final Study Guide Questions And
Answers – Updated 2026
What is the formula to solve for effective voltage or current? - CORRECT ANSWER-
Eff=.707*PEAK
Cycle per second is referred to as - CORRECT ANSWER- Frequency of hertz
The formula used to solve for average voltage or current is? - CORRECT ANSWER-
Average=.636*PEAK
What is the standard frequency for AC electric power supplied by the utility companies
in the US? - CORRECT ANSWER- 60 cycles per second
What device can be used to measure current in a circuit without disconnecting any
wires? - CORRECT ANSWER- Clamp on meter
How do we determine the direction of the magnetic lines of force travel? - CORRECT
ANSWER- Left hand rule
The ability of a material to retain its magnetism is called? - CORRECT ANSWER-
Retentivity
The point at which a given piece of material contains all the line of force it can hold is
called? - CORRECT ANSWER- Saturation
The ease with which a magnetic lines of force distribute themselves throughout a
material is referred to as? - CORRECT ANSWER- Permeability
What precautions should be taken when restoring power to elevator equipment after a
lockout and tag out? - CORRECT ANSWER- Ensure that all personnel are clear of
equipment
When using power tools, what is used to detect an imbalance between hot and neutral
to protect personnel of electrical shock? - CORRECT ANSWER- Ground Fault
Circuit Interrupter (GFCI)
If a co-worker is in contact with a live circuit what immediate action should be taken? -
CORRECT ANSWER- Remove power and remove co-worker from source.
What precautions should be taken when performing cleaning operation on elevator
electrical equipment? - CORRECT ANSWER- Remove power, lockout and tagout
, What is a coulomb? - CORRECT ANSWER- the unit that measures the quantity of
electrons passing a given point
When the cross sectional of a conductor is doubled, what happens to resistance? -
CORRECT ANSWER- Halves
What is contained in the nucleus of an atom? - CORRECT ANSWER- Neutrons and
protons
What is the unit of measure that opposes current flow? - CORRECT ANSWER-
Ohms
What happens when there is an equal number or protons and electrons? - CORRECT
ANSWER- You will have a neutral atom
Like charges that attract each other is a characteristic of? - CORRECT ANSWER-
atoms
What is the name of the unit used to measure a difference in potential across two points
in a circuit? - CORRECT ANSWER- Volt
What is another name for a difference in potential? - CORRECT ANSWER- EMF
(Electro-motive Force)
What symbol represents voltage in electricity? - CORRECT ANSWER- E
What is the valence shell? - CORRECT ANSWER- outermost shell of an atom
Which type of switch would normally be found at a terminal landing? - CORRECT
ANSWER- Unidirectional
What does one ampere equal? - CORRECT ANSWER- 1000 mA or 1,000,000 uA
What does 35 uA equal? - CORRECT ANSWER- .000035 Ampere
If you double the length of a wire what effect does it have on resistance? - CORRECT
ANSWER- The resistance doubles
What is a voltage drop? - CORRECT ANSWER- The amount of voltage consumed
by a load
What is the voltage drop across the switch? Closed switch - CORRECT ANSWER-
0 volts
How do you determine the state of a normally open or closed contact? - CORRECT
ANSWER- The contact has to have no power
The number of ways by which voltage or a difference of potential can be established?
- CORRECT ANSWER- Friction, Thermal Action, Magnetic Induction, Chemical
Action, Solar
What is the measurement of power in a circuit? - CORRECT ANSWER- wattage
The standard unit of measurement used to measure electrical pressure is referred to
as? - CORRECT ANSWER- Voltage
Answers – Updated 2026
What is the formula to solve for effective voltage or current? - CORRECT ANSWER-
Eff=.707*PEAK
Cycle per second is referred to as - CORRECT ANSWER- Frequency of hertz
The formula used to solve for average voltage or current is? - CORRECT ANSWER-
Average=.636*PEAK
What is the standard frequency for AC electric power supplied by the utility companies
in the US? - CORRECT ANSWER- 60 cycles per second
What device can be used to measure current in a circuit without disconnecting any
wires? - CORRECT ANSWER- Clamp on meter
How do we determine the direction of the magnetic lines of force travel? - CORRECT
ANSWER- Left hand rule
The ability of a material to retain its magnetism is called? - CORRECT ANSWER-
Retentivity
The point at which a given piece of material contains all the line of force it can hold is
called? - CORRECT ANSWER- Saturation
The ease with which a magnetic lines of force distribute themselves throughout a
material is referred to as? - CORRECT ANSWER- Permeability
What precautions should be taken when restoring power to elevator equipment after a
lockout and tag out? - CORRECT ANSWER- Ensure that all personnel are clear of
equipment
When using power tools, what is used to detect an imbalance between hot and neutral
to protect personnel of electrical shock? - CORRECT ANSWER- Ground Fault
Circuit Interrupter (GFCI)
If a co-worker is in contact with a live circuit what immediate action should be taken? -
CORRECT ANSWER- Remove power and remove co-worker from source.
What precautions should be taken when performing cleaning operation on elevator
electrical equipment? - CORRECT ANSWER- Remove power, lockout and tagout
, What is a coulomb? - CORRECT ANSWER- the unit that measures the quantity of
electrons passing a given point
When the cross sectional of a conductor is doubled, what happens to resistance? -
CORRECT ANSWER- Halves
What is contained in the nucleus of an atom? - CORRECT ANSWER- Neutrons and
protons
What is the unit of measure that opposes current flow? - CORRECT ANSWER-
Ohms
What happens when there is an equal number or protons and electrons? - CORRECT
ANSWER- You will have a neutral atom
Like charges that attract each other is a characteristic of? - CORRECT ANSWER-
atoms
What is the name of the unit used to measure a difference in potential across two points
in a circuit? - CORRECT ANSWER- Volt
What is another name for a difference in potential? - CORRECT ANSWER- EMF
(Electro-motive Force)
What symbol represents voltage in electricity? - CORRECT ANSWER- E
What is the valence shell? - CORRECT ANSWER- outermost shell of an atom
Which type of switch would normally be found at a terminal landing? - CORRECT
ANSWER- Unidirectional
What does one ampere equal? - CORRECT ANSWER- 1000 mA or 1,000,000 uA
What does 35 uA equal? - CORRECT ANSWER- .000035 Ampere
If you double the length of a wire what effect does it have on resistance? - CORRECT
ANSWER- The resistance doubles
What is a voltage drop? - CORRECT ANSWER- The amount of voltage consumed
by a load
What is the voltage drop across the switch? Closed switch - CORRECT ANSWER-
0 volts
How do you determine the state of a normally open or closed contact? - CORRECT
ANSWER- The contact has to have no power
The number of ways by which voltage or a difference of potential can be established?
- CORRECT ANSWER- Friction, Thermal Action, Magnetic Induction, Chemical
Action, Solar
What is the measurement of power in a circuit? - CORRECT ANSWER- wattage
The standard unit of measurement used to measure electrical pressure is referred to
as? - CORRECT ANSWER- Voltage
