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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°
30°
90°
180°

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AC Fundamentals, Circuit and Circuit Theory
Inductance of coil

Increases with the increase in supply frequency
Decreases with the increase in supply frequency
Becomes zero with the increase in supply frequency
Is unaffected by the supply frequency

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AC Fundamentals, Circuit and Circuit Theory
Which of the following coil will have large resonant frequency?

A coil with large resistance
A coil with low distributed capacitance
A coil with large distributed capacitance
A coil with low resistance

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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

C only
L or C
R only
L only

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AC Fundamentals, Circuit and Circuit Theory
A parallel AC. circuit in resonance will

Have current in each section equal to the line current
Have a high voltage developed across each inductive and capacitive section
Act like a resistor of low value
Have a high impedance

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

Capacitance only
Resistance only
Inductance only
None of the listed here

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