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What is the function of a relay in protection systems?

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Question: What is the function of a relay in protection systems?

Options:

  1. To generate power
  2. To measure voltage
  3. To detect faults and initiate circuit interruption
  4. To regulate current

Correct Answer: To detect faults and initiate circuit interruption

Solution: 

Relays are used to detect faults and initiate the operation of circuit breakers to isolate faulty sections.

What is the function of a relay in protection systems?

Practice Questions

Q1
What is the function of a relay in protection systems?
  1. To generate power
  2. To measure voltage
  3. To detect faults and initiate circuit interruption
  4. To regulate current

Questions & Step-by-Step Solutions

What is the function of a relay in protection systems?
  • Step 1: Understand that a relay is an electrical device.
  • Step 2: Know that relays monitor electrical systems for problems, called faults.
  • Step 3: When a fault is detected, the relay sends a signal.
  • Step 4: This signal tells a circuit breaker to turn off the power.
  • Step 5: Turning off the power helps to isolate the faulty section and protect the rest of the system.
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