Single Line diagram PTB
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
The symbol “M” inside a circle usually indicates:
Meter
Motor
Manual switch
Modem
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the function of the MCC (Motor Control Center) in the diagram?
Monitor current
Control motor operations
Provide grounding
Supply lighting
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which device connects directly between the incoming feeder and the bus bar?
CT
Relay
Circuit Breaker
MCC
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the main role of a circuit breaker in the diagram?
Start motor
Break the circuit during faults
Step voltage up
Measure frequency
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
The thick line labeled as “bus coupler” connects:
Load to MCC
Two bus bars
PT to transformer
Feeder to ground
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
A component labeled "G" inside a circle most likely refers to a:
Ground
Gate
Generator
Grid
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What does the overall single line diagram help engineers understand?
Cable routing
Pipe connections
Power flow and protection system
Mechanical layout
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