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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of

L or C
L only
C only
R only

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

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AC Fundamentals, Circuit and Circuit Theory
In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will

Be doubled
Be four times as high
Be reduced by half
Be reduced to one fourth

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

Remains in phase with
Leads
None of the listed here
Lags

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AC Fundamentals, Circuit and Circuit Theory
Skin effect occurs when a conductor carries current at _________ frequencies.

Very low
High
Low
Medium

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AC Fundamentals, Circuit and Circuit Theory
Which of the following statements pertains to resistors only?

Connecting them in parallel increases the total value
Can act as energy storage devices
Oppose sudden changes in voltage
Can dissipate considerable amount of power

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