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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Two waves of the same frequency have opposite phase when the phase angle between them is

0°
180°
90°
360°

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

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

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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
Can dissipate considerable amount of power
Oppose sudden changes in voltage

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AC Fundamentals, Circuit and Circuit Theory
The time constant of a series R-C circuit is given by

R/C
RC2
RC
R2C

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AC Fundamentals, Circuit and Circuit Theory
In AC. circuits, laminated iron is invariably used in order to

Reduce eddy current loss
Reduce circuit permeability
Increase heat radiation
Make assembly cheap and easier

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AC Fundamentals, Circuit and Circuit Theory
A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to

The big size of the inductor
The statement given is false
The current flowing in the inductor
The reactance of the inductor

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