A. primary side
B. secondary side
C. low voltage side
D. high voltage side
The efficiency of two identical transformers under load conditions can be determined by_______________?
A. short-circuit test
B. back-to-back test
C. open circuit test
D. any of the above
Greater the secondary leakage flux____________?
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
Which of the following parts of a transformer is visible from outside ?
A. Bushings
B. Core
C. Primary winding
D. Secondary winding
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 does not change in an ordinary transformer ?
A. Frequency
B. Voltage
C. Current
D. Any of the above
Harmonics in transformer result in___________?
A. increased core losses
B. increased I2R losses
C. magnetic interference with communication circuits
D. all of the above