Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

Inductive reactance is a force that tends to overcome the effects of counter emf
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is another term for counter emf
None of these

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Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles repel, while unlike poles attract
Current flowing through a conductor generates a magnetic field
Like magnetic poles attract, while unlike poles repel
None of these

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Electronic Principles
Which one of the following principles best describes the basic operation of a generator?

None of these
Like magnetic poles attract; unlike poles repel
Current is induced in a conductor that is moving through a magnetic field
Like magnetic poles repel; unlike poles attract
Current flowing through a conductor generates a magnetic field

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