In a transformer the resistance between its primary and secondary is____________?
In a transformer the resistance between its primary and secondary is____________?
A. zero
B. 1 ohm
C. 1000 ohms
D. infinite
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The degree of mechanical vibrations produced by the laminations of a transformer depends on____________?
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 aboveThe path of the magnetic flux in transformer should have____________?
The path of the magnetic flux in transformer should have____________?
A. high reluctance
B. low reactance
C. high resistance
D. low resistanceWhile conducting short-circuit test on a transformer the following side is short circuited?
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 sideThe efficiency of a transformer will be maximum when_____________?
The efficiency of a transformer will be maximum when_____________?
A. copper losses = hysteresis losses
B. hysteresis losses = eddy current losses
C. eddy current losses = copper losses
D. copper losses = iron lossesWhich of the following properties is not necessarily desirable for the material for transformer core ?
Which of the following properties is not necessarily desirable for the material for transformer core ?
A. Low hysteresis loss
B. High permeability
C. High thermal conductivity
D. Adequate mechanical strengthWhich winding in a transformer has more number of turns ?
Which winding in a transformer has more number of turns ?
A. Low voltage winding
B. High voltage winding
C. Primary winding
D. Secondary winding