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The minimum oil circuit breaker has less volume of oil because
  • a)
    the oil between the breaker contacts has greater strength.
  • b)
    there is insulation between the breaker contacts.
  • c)
    solid insulation is provided for insulation insulating the contacts from the earth
  • d)
    none of the above
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The minimum oil circuit breaker has less volume of oil becausea)the oi...
 In oil circuit breaker the fixed contact and moving contact are immerged inside the insulating oil. Whenever there is a separation of current carrying contacts in the oil, the arc in circuit breaker is initialized at the moment of separation of contacts, and due to this arc the oil is vaporized and decomposed in mostly hydrogen gas and ultimately creates a hydrogen bubble around the arc. This highly compressed gas bubble around the arc prevents re-striking of the arc after current reaches zero crossing of the cycle. The oil circuit breaker is the one of the oldest type of circuit breakers.
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Most Upvoted Answer
The minimum oil circuit breaker has less volume of oil becausea)the oi...
Explanation:

The minimum oil circuit breaker has less volume of oil because of the following reasons:

Solid Insulation:
Solid insulation is provided for insulating the contacts from the earth. The solid insulation reduces the amount of oil required in the breaker. Therefore, the minimum oil circuit breaker has less volume of oil.

Other options:
The option (a) is incorrect because the strength of the oil between the breaker contacts does not affect the volume of the oil required in the breaker. The option (b) is also incorrect because the insulation between the breaker contacts does not reduce the volume of oil required in the breaker.

Conclusion:
Thus, the correct answer is option 'C' - solid insulation is provided for insulating the contacts from the earth, which reduces the amount of oil required in the breaker.
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The minimum oil circuit breaker has less volume of oil becausea)the oil between the breaker contacts has greater strength.b)there is insulation between the breaker contacts.c)solid insulation is provided for insulation insulating the contacts from the earthd)none of the aboveCorrect answer is option 'C'. Can you explain this answer?
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