- (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 sur-roundings
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- (A) 0.4 mm to 0.5 mm
- (B) 4 mm to 5 mm
- (C) 14 mm to 15 mm
- (D) 25 mm to 40 mm
- (A) wood
- (B) copper
- (C) aluminium
- (D) silicon steel
- (A) Bmax
- (B) Bmax1-6
- (C) Bmax1-83
- (D) B max
- (A) magnetostrication
- (B) boo
- (C) hum
- (D) zoom
- (A) volts
- (B) amperes
- (C) kW
- (D) kVA
- (A) asbestos fiber
- (B) silica sand
- (C) sodium chloride
- (D) silica gel
- (A) ionizing air
- (B) absorbing moisture
- (C) cleansing the transformer oil
- (D) cooling the transformer oil
- (A) 90% load
- (B) zero load
- (C) 25% load
- (D) 50% load
- (A) average value
- (B) r.m.s. value
- (C) maximum value
- (D) instantaneous value
