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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Form Factor is the ratio of

Average value/peak value
r.m.s. value/peak value
Average value/r.m.s. value
r.m.s. value/average value

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AC Fundamentals, Circuit and Circuit Theory
The ratio of active power to apparent power is known as factor.

Power
Load
Form
Demand

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AC Fundamentals, Circuit and Circuit Theory
The transient currents are associated with the

Changes in the stored energy in the inductors and capacitors
Applied voltage to the circuit
Resistance of the circuit
Impedance of the circuit

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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

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

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AC Fundamentals, Circuit and Circuit Theory
The power consumed in a circuit element will be least when the phase difference between the current and voltage is

60°
90°
180°
30°

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AC Fundamentals, Circuit and Circuit Theory
Form factor for a sine wave is

1.414
0.707
0.637
1.11

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