Circuit Breaker IC 898
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Questions and Answers

Which of the following is NOT a requirement for marking on circuit breakers?

  • Current carrying capacity
  • Operating temperature (correct)
  • Voltage rating
  • Country of origin
  • What is the purpose of the 28-day test for circuit breakers?

  • To test the dielectric properties
  • To assess mechanical and electrical endurance (correct)
  • To ensure reliability of terminals
  • To check for temperature changes
  • Which of the following is a requirement for protection against electric shock?

  • Testing insulation resistance
  • Checking for temperature rise
  • Leaving in a humidity chamber
  • Using a test finger (correct)
  • What is the purpose of the dielectric properties test for circuit breakers?

    <p>To check for temperature changes</p> Signup and view all the answers

    What is the requirement for reliability of screws, current carrying parts, and connections in circuit breakers?

    <p>Withstand normal mechanical stress</p> Signup and view all the answers

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