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AC FUNDAMENTALS, CIRCUIT AND CIRCUIT THEORY

AC Fundamentals, Circuit and Circuit Theory
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?

45°
90°
30°
180°

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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

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

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AC Fundamentals, Circuit and Circuit Theory
Power factor of an inductive circuit is usually improved by connecting capacitor to it in

Series
Parallel
Both parallel and series
None of the listed here

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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 only
C only
R only
L or C

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AC Fundamentals, Circuit and Circuit Theory
Which of the following circuit component opposes the change in the circuit voltage ?

Inductance
Conductance
Capacitance
Resistance

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