A. to project against internal fault
B. to reduce copper as well as core losses
C. to cool the transformer oil
D. to take care of the expansion and contraction of transformer oil due to variation of temperature of the surroundings.
Answer: D
Explanation:
B. to reduce copper as well as core losses
C. to cool the transformer oil
D. to take care of the expansion and contraction of transformer oil due to variation of temperature of the surroundings.
Answer: D
Explanation:
Conservator:
- Transformer oil is used for the purpose of insulation and cooling.
- The oil should not be allowed to come in contact with atmospheric air, as it may spoil its insulating properties.
- To prevent this, we use conservators.
- The conservator consists of an airtight metal drum fixed above the level of the top of the oil tank and connected with it by a pipe.
- The function of a conservator is to take up contraction and expansion of oil without allowing it to come in contact with outside air.
Note:
Breather: The function of a breather in the transformer is to filter out the moisture from the air. Breather consists of silica gel which absorbs the moisture from the air.
Buchholz Relay: Buchholz relay is used for the protection of transformers from the faults occurring inside the transformer.
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