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AC Fundamentals, Circuit and Circuit Theory

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

0.707
1.11
1.414
0.637

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

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

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.

45
60
30
90

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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
R only
L or C
C only

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AC Fundamentals, Circuit and Circuit Theory
The power is measured in terms of decibels in case of

Current transformers
Transformers
Auto transformers
Electronic equipment

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

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

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MORE MCQ ON AC Fundamentals, Circuit and Circuit Theory

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