A. The power factor of the two trans-formers will be different from the power factor of common load
B. Incorrect polarity will result in dead short circuit
C. The transformers will not share load in proportion to their kVA ratings
D. none of the above
Month: June 2018
A. transformers will be overheated
B. power factors of both the transformers will be same
C. parallel operation will be not possible
D. parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common load
A. R2/VK
B. R2IK2
C. R22!K2
D. R22/K
A. leakage reactance
B. per unit impedance
C. efficiencies
D. ratings
A. voltage device
B. current device
C. power device
D. main flux device
A. to provide coupling between primary and secondary
B. to increase the magnitude of mutual flux
C. to decrease the magnitude of mag-netizing current
D. to provide all above features
A. less will be the secondary induced e.m.f.
B. less will be the primary induced e.m.f.
C. less will be the primary terminal voltage
D. none of the above
A. to provide free passage to the cooling oil
B. to insulate the coils from each other
C. both A. and (b)
D. none of the above
A. has high magnitude and low power factor
B. has high magnitude and high power factor
C. has small magnitude and high power factor
D. has small magnitude and low power factor
A. load on it increases
B. load on it decreases
C. load remains constant
D. none of the above
