Isolators - MCQs with answers

Isolators - MCQs with answers


Q1. Why is an isolator installed?

a. To isolate one portion of the circuit from another
b. As an substitute for the circuit breaker
c. It used on either sides of the circuit breaker
d. Both (a) and (c)

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ANSWER: a. To isolate one portion of the circuit from another



Q2. For which among the following the current ratings are not required?

a. Circuit breakers
b. Relays
c. Isolators
d. Load break switch

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ANSWER: c. Isolators



Q3. The isolators used in the transmission lines are capable of breaking

a. Fault current
b. No current
c. Charging current
d. Load current

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ANSWER: c. Charging current



Q4. Why are the isolators used?

a. Break abnormal current
b. Making under fault conditions
c. Breaking the circuit under no load condition
d. None of the above

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ANSWER: c. Breaking the circuit under no load condition



Q5. What is the major cause of the failure of the circuit breaker?

a. Trip circuit open
b. Trip latch defective
c. Spring defective
d. All of these

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ANSWER: d. All of these


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  • RE: Isolators - MCQs with answers -pradip kamble (04/21/18)
  • send me sir qustion and answer
    4th semester electrician
  • RE: Isolators - MCQs with answers -SANJAY PRAJAPATI (07/20/15)
  • my khowledge improved from this web