Category: Magnetic Circuit

A. metre/henry
B. henry/metre
C. henry
D. 1/henry

A. it has good residual magnetism
B. its hysteresis loop has large area
C. its mechanical strength is high
D. its mechanical strength is low

A. reluctivity
B. permeance
C. permeability
D. susceptibility

A. time constant remains unchanged
B. initial rate of rise of current is doubled
C. final steady current is doubled
D. time constant is halved

A. henry
B. weber
C. ampereturn/weber
D. ampere/metre

A. retentivity
B. resistivity
C. permeability
D. inductance

A. lowers their power efficiency
B. increases their cost of manufacture
C. leads to their increased weight
D. produces fringing

A. zero
B. small
C. large
D. none of the above