A. volume of material
B. frequency
C. steinmetz coefficient of material
D. ambient temperature
0
The unit of reluctance is_____________?
0
Reciprocal of reluctance is_______________?
A. metre/henry
B. henry/metre
C. henry
D. 1/henry
0
The property of a material which opposes the creation of magnetic flux in it is known as_____________?
A. reluctivity
B. permeance
C. permeability
D. susceptibility
0
Silicon steel is used in electrical machines because it has_____________?
A. reluctivity
B. magnetomotive force
C. permeance
D. reluctance
0
A ferrite core has less eddy current loss than an iron core because_______________?
A. low coercivity
B. low retentivity
C. low hysteresis loss
D. high coercivity
0
Laminated cores, in electrical machines, are used to reduce____________?
A. ferrites have high resistance
B. ferrites are magnetic
C. ferrites have low permeability
D. ferrites have high hysteresis
0
While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit ?
A. copper loss
B. eddy current loss
C. hysteresis loss
D. all of the above
0
The unit of retentivity is____________?
A. E.m.f.
B. Current
C. Current density
D. Conductivity
0
Conductance is analogous to_____________?
A. weber
B. weber/sq. m
C. ampere turn/meter
D. ampere turn
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