ELE 146 EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A disconnect is a switch that will: - ANS 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? - 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 2025/2026.
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A disconnect is a switch that will: - ANS 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? - 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
