ELE 146 Exam Questions And Answers.
Contacts are used in: - answer;-Contactors
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
, ELE 146 Exam Questions And Answers.
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
. Current is measured in amperes (A), but what letter is used to represent current? -
answer;-I
. What are the two types of current? - answer;-Alternating and direct
Resistance is measured in ohms (Ω), but what letter is used to represent resistance? -
answer;-R
If resistance is increased in a circuit, does current increase or decrease? - answer;-
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? - answer;-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? - answer;-36.8 ohms
Which type of diagram helps when troubleshooting because it shows a logical path to
take that helps solve a problem? - answer;-flow charts
Which type of diagram shows physical details, such as the length and height of an
object, as seen by the eye? - answer;-pictorial drawing
Which type of diagram uses symbols to show the interconnections of components in
electronic circuits? - answer;-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? -
answer;-line diagram
What are the five parts of a basic electrical circuit? - answer;-power source, conductor,
control switch, protection device, load
What are the two basic types of circuit protection devices? - answer;-circuit breakers
and fuses
In electrical switches, what do the abbreviations NO and NC stand for? - answer;-O :
normally opened, NC : normally closed
Contacts are used in: - answer;-Contactors
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
, ELE 146 Exam Questions And Answers.
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
. Current is measured in amperes (A), but what letter is used to represent current? -
answer;-I
. What are the two types of current? - answer;-Alternating and direct
Resistance is measured in ohms (Ω), but what letter is used to represent resistance? -
answer;-R
If resistance is increased in a circuit, does current increase or decrease? - answer;-
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? - answer;-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? - answer;-36.8 ohms
Which type of diagram helps when troubleshooting because it shows a logical path to
take that helps solve a problem? - answer;-flow charts
Which type of diagram shows physical details, such as the length and height of an
object, as seen by the eye? - answer;-pictorial drawing
Which type of diagram uses symbols to show the interconnections of components in
electronic circuits? - answer;-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? -
answer;-line diagram
What are the five parts of a basic electrical circuit? - answer;-power source, conductor,
control switch, protection device, load
What are the two basic types of circuit protection devices? - answer;-circuit breakers
and fuses
In electrical switches, what do the abbreviations NO and NC stand for? - answer;-O :
normally opened, NC : normally closed
