A. to provide oxygen inside the tank
B. to cool the coils during reduced load
C. to cool the transformer oil
D. to arrest flow of moisture when outside air enters the transformer
Related Mcqs:
- The chemical used in breather for transformer should have the quality of____________?
A. ionizing air
B. absorbing moisture
C. cleansing the transformer oil
D. cooling the transformer oil - The chemical used in breather is_______________?
A. asbestos fiber
B. silica sand
C. sodium chloride
D. silica gel - Which of the following is the main advantage of an auto-transformer over a two winding transformer?
A. Hysteresis losses are reduced
B. Saving in winding material
C. Copper losses are negligible
D. Eddy losses are totally eliminated - The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?
A. Conservator
B. Breather
C. Bushings
D. Buchholz relay - In the transformer the function of a conservator is to_______________?
A. provide fresh air for cooling the transformer
B. supply cooling oil to transformer in time of need
C. protect the transformer from damage when oil expends due to heating
D. none of the above - The function of conservator in a transformer is___________________?
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 - Which of the following is not a part of transformer installation ?
A. Conservator
B. Breather
C. Buchholz relay
D. Exciter - The core used in high frequency transformer is usually___________?
A. copper core
B. cost iron core
C. air core
D. mild steel core - The magnetising current of a transformer is usually small because it has___________?
A. small air gap
B. large leakage flux
C. laminated silicon steel core
D. fewer rotating parts - The transformer oil should have _______ volatility and _______ viscosity?
A. low,low
B. high,high
C. low,high
D. high,low
