ELE 146 Exam Questions Answered Correctly Latest Version 2025-2026
Contacts are used in: - Answers Contactors
Who should remove a lock-out / tag-out? - Answers Only the person who installed it
Which of the following is not a rule of drawing a ladder diagram? - Answers At least 2 loads per
line
The contact shown in the figure is a(n) ___________ ? - Answers True
One application of interlocking is to cause both the forward and reverse coils of a reversing
contactor to be energized at the same time. - Answers False
A Hand-Off-Automatic (H-O-A) circuit requires a selector switch with __________ positions. -
Answers 3
A __________ is often used to allow an operator or technician to change a machine from the
automatic mode to the manual mode. - Answers Selector switch
When batteries are wired in Series, you are increasing the Voltage. - Answers True
A disconnect is a switch that will: - Answers Manually remove power from a circuit or apply
power to a circuit
To quickly determine if a circuit is hot, what is the simplest tool to use? - Answers Voltage meter
The measured unit of electromotive force is a __________. - Answers Volt
What are the three fundamental particles contained in atoms? - Answers Protons, electrons and
neutrons.
Which particle has a negative charge? - Answers Electrons
What unit is used to measure resistance? - Answers Ohms
. What device allows current to flow in only one direction? - Answers Diode
What type of fuel is used to produce the most amount of electricity? - Answers Coal
What electrical devices consume the largest share of produced electricity? - Answers 3 phase
motors
Voltage is measured in volts (V), but what letter is used to represent voltage? - Answers E
What device converts AC voltage to DC voltage? - Answers rectifier
What are the two types of AC voltage? - Answers single phase AC, three phase AC
, . Current is measured in amperes (A), but what letter is used to represent current? - Answers I
. What are the two types of current? - Answers Alternating and direct
Resistance is measured in ohms (Ω), but what letter is used to represent resistance? - Answers
R
If resistance is increased in a circuit, does current increase or decrease? - Answers decreases
If 12 V is applied to a circuit that has a resistance of 500 Ω, how many milliamperes (mA) will
flow through the circuit? - Answers 24 milliamperes (mA)
If 230 V and 6.25 A are measured in a heating element, how much resistance (in Ω) does the
heating element have? - Answers 36.8 ohms
Which type of diagram helps when troubleshooting because it shows a logical path to take that
helps solve a problem? - Answers flow charts
Which type of diagram shows physical details, such as the length and height of an object, as
seen by the eye? - Answers pictorial drawing
Which type of diagram uses symbols to show the interconnections of components in electronic
circuits? - Answers schematic diagram
. Which type of diagram shows the logic of an electrical circuit drawn with vertical power lines
and circuit components drawn on horizontal lines between the power lines? - Answers line
diagram
What are the five parts of a basic electrical circuit? - Answers power source, conductor, control
switch, protection device, load
What are the two basic types of circuit protection devices? - Answers circuit breakers and fuses
In electrical switches, what do the abbreviations NO and NC stand for? - Answers O : normally
opened, NC : normally closed
What electrical device is used to turn a motor on and off and includes overload protection? -
Answers starter
What electrical device converts electrical energy into a linear mechanical force? - Answers
solenoid
What are the two basic types of contactors? - Answers energized and de-energized
What is the best type of pushbutton operator to use in an emergency stop application? -
Answers Jumbo Mushroom Button Operators
Can one pushbutton operate both NO and NC contacts? - Answers A pushbutton with a contact
Contacts are used in: - Answers Contactors
Who should remove a lock-out / tag-out? - Answers Only the person who installed it
Which of the following is not a rule of drawing a ladder diagram? - Answers At least 2 loads per
line
The contact shown in the figure is a(n) ___________ ? - Answers True
One application of interlocking is to cause both the forward and reverse coils of a reversing
contactor to be energized at the same time. - Answers False
A Hand-Off-Automatic (H-O-A) circuit requires a selector switch with __________ positions. -
Answers 3
A __________ is often used to allow an operator or technician to change a machine from the
automatic mode to the manual mode. - Answers Selector switch
When batteries are wired in Series, you are increasing the Voltage. - Answers True
A disconnect is a switch that will: - Answers Manually remove power from a circuit or apply
power to a circuit
To quickly determine if a circuit is hot, what is the simplest tool to use? - Answers Voltage meter
The measured unit of electromotive force is a __________. - Answers Volt
What are the three fundamental particles contained in atoms? - Answers Protons, electrons and
neutrons.
Which particle has a negative charge? - Answers Electrons
What unit is used to measure resistance? - Answers Ohms
. What device allows current to flow in only one direction? - Answers Diode
What type of fuel is used to produce the most amount of electricity? - Answers Coal
What electrical devices consume the largest share of produced electricity? - Answers 3 phase
motors
Voltage is measured in volts (V), but what letter is used to represent voltage? - Answers E
What device converts AC voltage to DC voltage? - Answers rectifier
What are the two types of AC voltage? - Answers single phase AC, three phase AC
, . Current is measured in amperes (A), but what letter is used to represent current? - Answers I
. What are the two types of current? - Answers Alternating and direct
Resistance is measured in ohms (Ω), but what letter is used to represent resistance? - Answers
R
If resistance is increased in a circuit, does current increase or decrease? - Answers decreases
If 12 V is applied to a circuit that has a resistance of 500 Ω, how many milliamperes (mA) will
flow through the circuit? - Answers 24 milliamperes (mA)
If 230 V and 6.25 A are measured in a heating element, how much resistance (in Ω) does the
heating element have? - Answers 36.8 ohms
Which type of diagram helps when troubleshooting because it shows a logical path to take that
helps solve a problem? - Answers flow charts
Which type of diagram shows physical details, such as the length and height of an object, as
seen by the eye? - Answers pictorial drawing
Which type of diagram uses symbols to show the interconnections of components in electronic
circuits? - Answers schematic diagram
. Which type of diagram shows the logic of an electrical circuit drawn with vertical power lines
and circuit components drawn on horizontal lines between the power lines? - Answers line
diagram
What are the five parts of a basic electrical circuit? - Answers power source, conductor, control
switch, protection device, load
What are the two basic types of circuit protection devices? - Answers circuit breakers and fuses
In electrical switches, what do the abbreviations NO and NC stand for? - Answers O : normally
opened, NC : normally closed
What electrical device is used to turn a motor on and off and includes overload protection? -
Answers starter
What electrical device converts electrical energy into a linear mechanical force? - Answers
solenoid
What are the two basic types of contactors? - Answers energized and de-energized
What is the best type of pushbutton operator to use in an emergency stop application? -
Answers Jumbo Mushroom Button Operators
Can one pushbutton operate both NO and NC contacts? - Answers A pushbutton with a contact
