Practice PMMI - Industrial Electricity With Questions And 100% SURE ANSWERS
Terms in this set (79)
The purpose of an electrical ladder diagram is Depict Electrical Configurations
to __________ ?
Depict the physical wiring of the system
Depict the physical location of the components in
the system
Depict the electrical interconnections of the
components in the system.
All of the above.
What is the total resistance of this circuit? None
50Ω
5.5Ω
500 Ω
None of these
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The coil of a relay is a(n): Output
Input Device
Output Device
Both A and B
None of the above
Inductance is defined as?
Power in a circuit can be determined by Multiplying Current By Voltage
Multiplying current by resistance
Dividing voltage by current
Dividing current by resistance
Multiplying current by voltage
Undervoltage protection in a two wire control Disables the restart button
system
Allows the system to 'ride through' voltage sags
Ensures the system restarts as soon as the voltage
level returns to normal
Disables automatic restarts after a power loss
Ensures the voltage does not dip below nominal
tolerances
In order to reverse the direction of a 3-phase Swap T1 and T3
motor, you should
Rotate the motor 180 degrees
Interlock the forward and reverse contactors
Swap T1 and T3
Wire for high voltage
Voltage across a set of closed N.O. contacts Zero
should be
Zero
The source voltage
Infinite resistance
None of the above
The difference in electrical potential between two Voltage
points is defined as
Current
Resistance
Voltage
Reactance Practice PMMI - Industrial Electricity
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