A. insulation resistance
B. copper loss
C. core loss
D. total loss
E. efficiency
F. none of the above
Related Mcqs:
- During open circuit test of a transformer:
A. primary is supplied rated voltage
B. primary is supplied full-load current
C. primary is supplied current at reduced voltage
D. primary is supplied rated kVA - Open circuit test on transformers is conducted to determine____________?
A. hysteresis losses
B. copper losses
C. core losses
D. eddy current losses - While conducting short-circuit test on a transformer the following side is short circuited?
A. High voltage side
B. Low voltage side
C. Primary side
D. Secondary side - Short circuit test on transformers is conducted to determine____________?
A. hysteresis losses
B. copper losses
C. core losses
D. eddy current losses - 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 - When secondary of a current transformer is open-circuited its iron core will be__________?
A. hot because of heavy iron losses taking place in it due to high flux density
B. hot because primary will carry heavy current
C. cool as there is no secondary current
D. none of above will happen - Noise level test in a transformer is a______________?
A. special test
B. routine test
C. type test
D. none of the above - A no-load test is performed on a transformer to determine_______________?
A. core loss
B. copper loss
C. efficiency
D. magnetising current
E. magnetising current and loss - Sumpner’s test is conducted on transformers to determine_____________?
A. temperature
B. stray losses
C. all-day efficiency
D. none of the above
