TPC Electrical Level 3 Test Questions
with Correct Answers | Rated A+
The permanent joining of motor frames, conduit, control boxes, and other metal parts not
intended to carry current in normal operations is known as
• equipment bonding
• equipment grounding
• short circuiting
• system grounding - CORRECT ANSWER -equipment bonding
Autotransformer starting is used where the minimum motor _____ current must be reduced
with a minimum sacrifice of motor starting torque.
• full-load
• Inrush
• locked-rotor
• running - CORRECT ANSWER -inrush
The function of a float switch is to indicate
• flow
• liquid level
• movement
• pressure - CORRECT ANSWER -liquid level
,The minimum potential difference that will cause the armature to seat against the pole faces of
a relay coil is called the. _____voltage
• drop-out
• pick-up
• seal-in
• seat-in - CORRECT ANSWER -seal in
What is a protocol?
• generic communication methods
• similar communication methods
• unique communication methods
• polite communication methods - CORRECT ANSWER -unique communication methods
In a pneumatic circuit, leakage of air during the actuating part of the cycle
• can usually be ignored
• indicates the device will fail soon
• is dangerous and must be stopped
• prevents normal operation - CORRECT ANSWER -can usually be ignored
A two-parallel-Y connection
• requires a higher potential difference than a series-Y connection
• requires a lower potential difference than a series-Y connection
, • is the lower-voltage connection in a dual-voltage, delta-connected motor
• is the higher voltage connection in a dual-voltage, delta-connected motor - CORRECT ANSWER
-requires a lower potential difference than a series-Y connection
Another name for the mounting enclosure is what?
• fixed
• modular
• rасk
• slots - CORRECT ANSWER -rack
An undercurrent relay functions when the current reaches a(n)
• lower limit
• upper limit
• value between the upper and lower limits
• value outside the upper and lower limits - CORRECT ANSWER -lower limit
The first step in developing a PLC system to meet given specifications is
• assembling the documentation
• drawing the hardware
• sizing the system
• writing the software - CORRECT ANSWER -sizing the system
A relay that has "dogs" located directly above the operating bar is called a ____ relay
with Correct Answers | Rated A+
The permanent joining of motor frames, conduit, control boxes, and other metal parts not
intended to carry current in normal operations is known as
• equipment bonding
• equipment grounding
• short circuiting
• system grounding - CORRECT ANSWER -equipment bonding
Autotransformer starting is used where the minimum motor _____ current must be reduced
with a minimum sacrifice of motor starting torque.
• full-load
• Inrush
• locked-rotor
• running - CORRECT ANSWER -inrush
The function of a float switch is to indicate
• flow
• liquid level
• movement
• pressure - CORRECT ANSWER -liquid level
,The minimum potential difference that will cause the armature to seat against the pole faces of
a relay coil is called the. _____voltage
• drop-out
• pick-up
• seal-in
• seat-in - CORRECT ANSWER -seal in
What is a protocol?
• generic communication methods
• similar communication methods
• unique communication methods
• polite communication methods - CORRECT ANSWER -unique communication methods
In a pneumatic circuit, leakage of air during the actuating part of the cycle
• can usually be ignored
• indicates the device will fail soon
• is dangerous and must be stopped
• prevents normal operation - CORRECT ANSWER -can usually be ignored
A two-parallel-Y connection
• requires a higher potential difference than a series-Y connection
• requires a lower potential difference than a series-Y connection
, • is the lower-voltage connection in a dual-voltage, delta-connected motor
• is the higher voltage connection in a dual-voltage, delta-connected motor - CORRECT ANSWER
-requires a lower potential difference than a series-Y connection
Another name for the mounting enclosure is what?
• fixed
• modular
• rасk
• slots - CORRECT ANSWER -rack
An undercurrent relay functions when the current reaches a(n)
• lower limit
• upper limit
• value between the upper and lower limits
• value outside the upper and lower limits - CORRECT ANSWER -lower limit
The first step in developing a PLC system to meet given specifications is
• assembling the documentation
• drawing the hardware
• sizing the system
• writing the software - CORRECT ANSWER -sizing the system
A relay that has "dogs" located directly above the operating bar is called a ____ relay
