An ampere -turn is a unit of .
A) magnetomotive force (mmf)
B) resistance
C) permeability
D) reactance
Correct Answer:
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Q55: Like magnetic poles .
A)have no effect on
Q56: A relay is a device that .
A)has
Q57: The movable part of the solenoid is
Q58: Hysteresis is a characteristic of magnetic materials
Q59: The electromagnet cannot be further magnetized.
A)open
B)capacitive
C)saturated
D)shorted
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Q62: If a higher voltage is needed from
Q63: When controlling the direction of a dc
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