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SUBSTATION AND EQUIPMENT
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1) Which is a part of oil circuit breaker?
Insulating vessel
Arc shield
Arc splitters
Moving Contact
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Correct Answer: Moving Contact
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1) Which is a part of oil circuit breaker?
Insulating vessel
Arc shield
Arc splitters
Moving Contact
2) What is the main purpose of oil in oil circuit breaker?
Provide insulation
Quenching arc
Providing cooling for contacts
Act as lubrication
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Correct Answer: Quenching arc
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2) What is the main purpose of oil in oil circuit breaker?
Provide insulation
Quenching arc
Providing cooling for contacts
Act as lubrication
3) What is the full name of SF6 circuit breaker?
Soda flouride circuit breaker
Sulphur hexaflouride circuit breaker
Sodium flouride circuit breaker
Sodium bicarbonate circuit breaker
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Correct Answer: Sulphur hexaflouride circuit breaker
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3) What is the full name of SF6 circuit breaker?
Soda flouride circuit breaker
Sulphur hexaflouride circuit breaker
Sodium flouride circuit breaker
Sodium bicarbonate circuit breaker
4) What is the medium of arc quenching in an oil circuit breaker ?
Oil
Water
Nitrogen
Air
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Correct Answer: Oil
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4) What is the medium of arc quenching in an oil circuit breaker ?
Oil
Water
Nitrogen
Air
5) Why aluminium is used as busbar material?
Low density
Low cost
Easy to fabrication
Low resistance
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Correct Answer: Low cost
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5) Why aluminium is used as busbar material?
Low density
Low cost
Easy to fabrication
Low resistance
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