ELE 146 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE FULL
SOLUTION
●● Who should remove a lock-out / tag-out?
Answer: Only the person who installed it
●● Which of the following is not a rule of drawing a ladder diagram?
Answer: At least 2 loads per line
●● The contact shown in the figure is a(n) ___________ ?
Answer: 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.
Answer: False
●● A Hand-Off-Automatic (H-O-A) circuit requires a selector switch
with __________ positions.
Answer: 3
,●● A __________ is often used to allow an operator or technician to
change a machine from the automatic mode to the manual mode.
Answer: Selector switch
●● When batteries are wired in Series, you are increasing the Voltage.
Answer: True
●● A disconnect is a switch that will:
Answer: 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?
Answer: Voltage meter
●● The measured unit of electromotive force is a __________.
Answer: Volt
●● What are the three fundamental particles contained in atoms?
Answer: Protons, electrons and neutrons.
●● Which particle has a negative charge?
Answer: Electrons
, ●● What unit is used to measure resistance?
Answer: Ohms
●● . What device allows current to flow in only one direction?
Answer: Diode
●● What type of fuel is used to produce the most amount of electricity?
Answer: Coal
●● What electrical devices consume the largest share of produced
electricity?
Answer: 3 phase motors
●● Voltage is measured in volts (V), but what letter is used to represent
voltage?
Answer: E
●● What device converts AC voltage to DC voltage?
Answer: rectifier
●● What are the two types of AC voltage?
Answer: single phase AC, three phase AC
AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE FULL
SOLUTION
●● Who should remove a lock-out / tag-out?
Answer: Only the person who installed it
●● Which of the following is not a rule of drawing a ladder diagram?
Answer: At least 2 loads per line
●● The contact shown in the figure is a(n) ___________ ?
Answer: 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.
Answer: False
●● A Hand-Off-Automatic (H-O-A) circuit requires a selector switch
with __________ positions.
Answer: 3
,●● A __________ is often used to allow an operator or technician to
change a machine from the automatic mode to the manual mode.
Answer: Selector switch
●● When batteries are wired in Series, you are increasing the Voltage.
Answer: True
●● A disconnect is a switch that will:
Answer: 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?
Answer: Voltage meter
●● The measured unit of electromotive force is a __________.
Answer: Volt
●● What are the three fundamental particles contained in atoms?
Answer: Protons, electrons and neutrons.
●● Which particle has a negative charge?
Answer: Electrons
, ●● What unit is used to measure resistance?
Answer: Ohms
●● . What device allows current to flow in only one direction?
Answer: Diode
●● What type of fuel is used to produce the most amount of electricity?
Answer: Coal
●● What electrical devices consume the largest share of produced
electricity?
Answer: 3 phase motors
●● Voltage is measured in volts (V), but what letter is used to represent
voltage?
Answer: E
●● What device converts AC voltage to DC voltage?
Answer: rectifier
●● What are the two types of AC voltage?
Answer: single phase AC, three phase AC
