The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

A. Iron loss in core

B. Skin effect

C. Increase in temperature

D. Capacitive effect between adjacent coil turns

Answer: Option A

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Related Questions on A.C Fundamentals, Circuits and Circuit Theory

Which of the following refers to a parallel circuit?

A. The current through each element is same

B. The voltage across element is in proportion to it's resistance value

C. The equivalent resistance is greater than any one of the resistors

D. The current through any one element is less than the source current

In any A.C. circuit always

A. Apparent power is more than actual power

B. Reactive power is more than apparent power

C. Actual power is more than reactive power

D. Reactive power is more than actual power