A. its power factor will deteriorate
B. its power factor will increase
C. its power factor will remain unaffected
D. its power factor will be zero
Transformers
Transformers
A. hysteresis losses
B. copper losses
C. core losses
D. eddy current losses
A. iron core
B. copper winding
C. winding insulation
D. frame or case
E. transformer tank
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
A. primary turns to secondary turns
B. secondary current to primary current
C. secondary induced e.m.f. to primary induced e.m.f
D. secondary terminal voltage to primary applied voltage
A. core loss
B. copper loss
C. efficiency
D. magnetising current
E. magnetising current and loss
A. Circular type
B. Sandwich type
C. Cylindrical type
D. Rectangular type
A. insulation resistance
B. copper loss
C. core loss
D. total loss
E. efficiency
F. none of the above
A. mica strip
B. thin coat of varnish
C. paper
D. any of the above
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
