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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In an A.C. circuit power is dissipated in

Inductance only
Capacitance only
None of the listed here
Resistance only

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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

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

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AC Fundamentals, Circuit and Circuit Theory
For a sine wave with peak value Emax ___________ the average value is

None of the listed here
0.636 Emax
0.707 Emax
0.434 Emax

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AC Fundamentals, Circuit and Circuit Theory
The best place to install a capacitor is

Across the terminals of the inductive load
Far away from the inductive load
Very near to inductive load
Any of the listed here

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AC Fundamentals, Circuit and Circuit Theory
Inductance of a coil Varies

Directly as the cross-sectional area of magnetic core
None of the listed here
Both of the listed here
Inversely as the length of the iron path

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AC Fundamentals, Circuit and Circuit Theory
A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to

The statement is incorrect
The capacitive reactance in ohms
The current flowing in capacitor
The size of the capacitor being quite big

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