An ampere-turn is a unit of ________.
A) magnetomotive force (mmf)
B) permeability
C) reactance
D) resistance
Correct Answer:
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Q39: In which one of the following applications
Q40: If the cross-sectional area of a magnetic
Q41: Like magnetic poles _.
A)have the same current
Q42: The movable part of the relay is
Q43: Soft iron has a high _.
A)reactance
B)resistance
C)permeability
D)mmf
Q45: Electromagnetic induction is best defined as the
Q46: If the number of turns of wire
Q47: If some turns of Wire are removed
Q48: A relay is a device that _.
A)isolates
Q49: An iron core electromagnet has a higher
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