If the primary current is less than two amperes for a transformer rated at 600 volts or less, the short-circuit protective device can be set at not more than _____ percent of this value.

Midterm Seg 4 June 24

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Matthew Bermudez
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
100
150
250
300
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Connections between the current and potential transformers in the high-voltage section of the unit substation and the autotransformer and meter sockets in the cabinet are made with size 12_______ wire.
Copper Wire Gauge
British Standard Wire Gauge
Metric Wire Gauge
American Wire Gauge
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Lightning arresters are designed to provide a (n)_______ path to ground for any surge currents such as those resulting from a lightning strike.
high resistance
low-impedance
non-conductive
variable
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
The autotransformer is designed to provide voltage components to the potential coils of the reactive meter. These voltage components are _______ degrees out of phase with the line voltage.
60
90
120
150
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
After the incoming voltage is reduced to the desired value, it is taken by into the low-voltage section.
busbars
circuit breakers
fuses
transformers
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
The ______ of a transformer is the winding that is connected to a voltage source.
resistor
output
primary
open circuit
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
is the process of selecting protective devices so that there is a minimum of power interruption in case of a fault or overload.
Insulation
Shielding
Coordination
Integration
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