Industrial Electricity Test Questions and Answers Already Passed
Detached Symbology is? - Answers A method of representing one component with several symbols in
various locations on a ladder diagram
To measure the voltage drop in a circuit, the voltmeter should be connected in the circuit by? a)
Disconnecting power, removing the wire leading to the device in question, and wiring the meter in its
place
b) Placing the test leads in parallel with the device in question
c) Removing all but the device in question and measuring the voltage through it
d) By placing an ammeter in series with the device - Answers b) Placing the test leads in parallel with the
device in question
What is the resistance of a circuit that is being supplied by a 24VDC power source that is putting out 3
amps? a) 72 ohms
b) 8 ohms
c) .125 ohms
d) None of these - Answers b) 8 Ohms
The amount a conductor resists the flow of electric current is measured in? a) Watts
b) Volts
c) Amps
d) Ohms - Answers d) Ohms
Which statement is true for a series circuit? a) The voltage drop through each component is the same
b) The total resistance is less than the smallest resistor
c) The current flow through each component is the same
d) The power output of each component is the same - Answers c) The current flow through each
component is the same
The energy stored in a capacitor is called? a) Electrostatic charge
b) Induced voltage
c) Stored current
d) Electromagnetic charge - Answers a) Electrostatic charge
,Which of the following is a form of Ohm's Law? a) Voltage = Current / Resistance
b) Current = Voltage / Resistance
c) Voltage = Current / Watts
d) Current = Resistance / Voltage - Answers b) Current = Voltage / Resistance
The resistance provided by a capacitor in an AC circuit is called?
a) Capacitive reactance
b) Capacitive resistance
c) Electrostatic resistance
d) Electromotive reactance - Answers a) Capacitive reactance
What is the voltage output of a transformers who's turns ratio is 6:1 and has a primary voltage of
480VAC?
a) 60VAC
b) 120VAC
c) 0VAC
d) 80VAC - Answers d) 80VAC
Transformers are used to change a source's?
a) Voltage
b) Frequency
c) Power
d) Resistance - Answers a) Voltage
The amount of power used on the primary side of a transformer is ______ than the power used on the
secondary (ignoring losses)?
a) more
b) less
c) the same - Answers c) the same
The actual speed of an AC induction motor is:
, a) The synchronous speed.
b) Always the value listed on the name plate.
c) Faster as the motors load increases.
d) None of the above - Answers d) None of the above
In mutual induction, what passes between conductors in order to create voltage?
a) Radiation
b) Current
c) Magnetic Flux
d) Resistance - Answers c) Magnetic Flux
Given a 208VAC, three phase power source, what is the nominal voltage level from any phase to any
other phase?
a) 0 VAC
b) 104 VAC
c) 120 VAC
d) 208 VAC - Answers d) 208 VAC
If a transformer has a VA rating of 1,200, a source voltage of 208VAC and the output voltage is 120VAC,
what is the approximate maximum current that can be safely delivered by the transformer?
a) 1 amp
b) 6 amps
c) 10 amps
d) 3 amps - Answers c) 10 amps
The purpose of a ladder control diagram is to? a) Depict the physical wiring of the system
b) Depict the physical layout of the system
c) Depict the electrical interconnections of the control components in the system
d) All of the above - Answers c) Depict the electrical interconnections of the control components in the
system
An AC electric motor has two main parts: the ________ and the ____________
Detached Symbology is? - Answers A method of representing one component with several symbols in
various locations on a ladder diagram
To measure the voltage drop in a circuit, the voltmeter should be connected in the circuit by? a)
Disconnecting power, removing the wire leading to the device in question, and wiring the meter in its
place
b) Placing the test leads in parallel with the device in question
c) Removing all but the device in question and measuring the voltage through it
d) By placing an ammeter in series with the device - Answers b) Placing the test leads in parallel with the
device in question
What is the resistance of a circuit that is being supplied by a 24VDC power source that is putting out 3
amps? a) 72 ohms
b) 8 ohms
c) .125 ohms
d) None of these - Answers b) 8 Ohms
The amount a conductor resists the flow of electric current is measured in? a) Watts
b) Volts
c) Amps
d) Ohms - Answers d) Ohms
Which statement is true for a series circuit? a) The voltage drop through each component is the same
b) The total resistance is less than the smallest resistor
c) The current flow through each component is the same
d) The power output of each component is the same - Answers c) The current flow through each
component is the same
The energy stored in a capacitor is called? a) Electrostatic charge
b) Induced voltage
c) Stored current
d) Electromagnetic charge - Answers a) Electrostatic charge
,Which of the following is a form of Ohm's Law? a) Voltage = Current / Resistance
b) Current = Voltage / Resistance
c) Voltage = Current / Watts
d) Current = Resistance / Voltage - Answers b) Current = Voltage / Resistance
The resistance provided by a capacitor in an AC circuit is called?
a) Capacitive reactance
b) Capacitive resistance
c) Electrostatic resistance
d) Electromotive reactance - Answers a) Capacitive reactance
What is the voltage output of a transformers who's turns ratio is 6:1 and has a primary voltage of
480VAC?
a) 60VAC
b) 120VAC
c) 0VAC
d) 80VAC - Answers d) 80VAC
Transformers are used to change a source's?
a) Voltage
b) Frequency
c) Power
d) Resistance - Answers a) Voltage
The amount of power used on the primary side of a transformer is ______ than the power used on the
secondary (ignoring losses)?
a) more
b) less
c) the same - Answers c) the same
The actual speed of an AC induction motor is:
, a) The synchronous speed.
b) Always the value listed on the name plate.
c) Faster as the motors load increases.
d) None of the above - Answers d) None of the above
In mutual induction, what passes between conductors in order to create voltage?
a) Radiation
b) Current
c) Magnetic Flux
d) Resistance - Answers c) Magnetic Flux
Given a 208VAC, three phase power source, what is the nominal voltage level from any phase to any
other phase?
a) 0 VAC
b) 104 VAC
c) 120 VAC
d) 208 VAC - Answers d) 208 VAC
If a transformer has a VA rating of 1,200, a source voltage of 208VAC and the output voltage is 120VAC,
what is the approximate maximum current that can be safely delivered by the transformer?
a) 1 amp
b) 6 amps
c) 10 amps
d) 3 amps - Answers c) 10 amps
The purpose of a ladder control diagram is to? a) Depict the physical wiring of the system
b) Depict the physical layout of the system
c) Depict the electrical interconnections of the control components in the system
d) All of the above - Answers c) Depict the electrical interconnections of the control components in the
system
An AC electric motor has two main parts: the ________ and the ____________
