AC Fundamentals, Circuit and Circuit Theory
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

Increase in temperature
Skin effect
Capacitive effect between adjacent coil turns
Iron loss in core

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

The less heat than produced by A.C. flowing through the same circuit
None of these
The same heat as produced by A.C. when flowing through the same circuit
The more heat than produced by A.C. when flowing through the same circuit

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AC Fundamentals, Circuit and Circuit Theory
Capacitive susceptance is a measure of

A purely capacitive circuit's ability to resist the flow of current
Reactive power in a circuit
A purely capacitive circuit's ability to pass current
The extent of neutralization of reactive power in a circuit

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