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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

Capacitance only
None of the listed here
Inductance only
Resistance only

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AC Fundamentals, Circuit and Circuit Theory
In a parallel R-C circuit, the current always _________the applied voltage.

Leads
Remains in phase with
Lags
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

Both waves must have same frequency
Both waves must have identical peak values
Both waves must have zero value at the same time
None of these

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AC Fundamentals, Circuit and Circuit Theory
Wire-wound resistors are unsuitable for use at high frequencies because they

Create more electrical noise
Consume more power
Are likely to melt under excessive eddy current heat
Exhibit unwanted inductive and capacitive effects

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AC Fundamentals, Circuit and Circuit Theory
The double energy transient occur in the

R-L circuit
Purely inductive circuit
R-L-C circuit
R-C circuit

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AC Fundamentals, Circuit and Circuit Theory
In the case of an unsymmetrical alternating current the average value must always be taken over

The quarter cycle
The half cycle
Unsymmetrical part of the wave form
The whole cycle

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