Page | 1
ELE 146 Exam Questions with
Detailed Verified Answers
Contacts are used in: Ans: Contactors
Who should remove a lock-out / tag-out? Ans: Only the person
who installed it
Which of the following is not a rule of drawing a ladder diagram?
Ans: At least 2 loads per line
The contact shown in the figure is a(n) ___________ ? Ans: 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. Ans: False
A Hand-Off-Automatic (H-O-A) circuit requires a selector switch
with __________ positions. Ans: 3
A __________ is often used to allow an operator or technician to
change a machine from the automatic mode to the manual
mode. Ans: Selector switch
When batteries are wired in Series, you are increasing the Voltage.
Ans: True
A disconnect is a switch that will: Ans: Manually remove power
from a circuit or apply power to a circuit
, Page | 2
To quickly determine if a circuit is hot, what is the simplest tool to
use? Ans: Voltage meter
The measured unit of electromotive force is a __________. Ans: Volt
What are the three fundamental particles contained in atoms?
Ans: Protons, electrons and neutrons.
Which particle has a negative charge? Ans: Electrons
What unit is used to measure resistance? Ans: Ohms
. What device allows current to flow in only one direction? Ans:
Diode
What type of fuel is used to produce the most amount of
electricity? Ans: Coal
What electrical devices consume the largest share of produced
electricity? Ans: 3 phase motors
Voltage is measured in volts (V), but what letter is used to
represent voltage? Ans: E
What device converts AC voltage to DC voltage? Ans: rectifier
What are the two types of AC voltage? Ans: single phase AC,
three phase AC
. Current is measured in amperes (A), but what letter is used to
represent current? Ans: I
ELE 146 Exam Questions with
Detailed Verified Answers
Contacts are used in: Ans: Contactors
Who should remove a lock-out / tag-out? Ans: Only the person
who installed it
Which of the following is not a rule of drawing a ladder diagram?
Ans: At least 2 loads per line
The contact shown in the figure is a(n) ___________ ? Ans: 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. Ans: False
A Hand-Off-Automatic (H-O-A) circuit requires a selector switch
with __________ positions. Ans: 3
A __________ is often used to allow an operator or technician to
change a machine from the automatic mode to the manual
mode. Ans: Selector switch
When batteries are wired in Series, you are increasing the Voltage.
Ans: True
A disconnect is a switch that will: Ans: Manually remove power
from a circuit or apply power to a circuit
, Page | 2
To quickly determine if a circuit is hot, what is the simplest tool to
use? Ans: Voltage meter
The measured unit of electromotive force is a __________. Ans: Volt
What are the three fundamental particles contained in atoms?
Ans: Protons, electrons and neutrons.
Which particle has a negative charge? Ans: Electrons
What unit is used to measure resistance? Ans: Ohms
. What device allows current to flow in only one direction? Ans:
Diode
What type of fuel is used to produce the most amount of
electricity? Ans: Coal
What electrical devices consume the largest share of produced
electricity? Ans: 3 phase motors
Voltage is measured in volts (V), but what letter is used to
represent voltage? Ans: E
What device converts AC voltage to DC voltage? Ans: rectifier
What are the two types of AC voltage? Ans: single phase AC,
three phase AC
. Current is measured in amperes (A), but what letter is used to
represent current? Ans: I
