The degree of mechanical vibrations produced by the laminations of a transformer depends on____________?
A. tightness of clamg
B. gauge of laminations
C. size of laminations
D. all of the above
Transformers
A transformer core is laminated to__________?
A transformer core is laminated to__________?
A. reduce hysteresis loss
B. reduce eddy current losses
C. reduce copper losses
D. reduce all above losses
In a transformer the energy is conveyed from primary to secondary_________?
In a transformer the energy is conveyed from primary to secondary_________?
A. through cooling coil
B. through air
C. by the flux
D. none of the above
Which of the following does not change in a transformer ?
Which of the following does not change in a transformer ?
A. Current
B. Voltage
C. Frequency
D. All of the above