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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
In a sine wave the slope is constant

No where
Between 180° and 270°
Between 0° and 90°
Between 90° and 180°

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AC Fundamentals, Circuit and Circuit Theory
Power factor of an electrical circuit is equal to

all of these
R/Z
Cosine of phase angle difference between current and voltage
Ratio of useful current to total current Iw/I

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AC Fundamentals, Circuit and Circuit Theory
If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is

A sinusoid of the same frequency
None of the listed here
A sinusoid of half the original frequency
A sinusoid of double the frequency

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AC Fundamentals, Circuit and Circuit Theory
Which of the following waves has the highest value of peak factor ?

Sine wave
Square wave
Triangular wave
Half wave rectified sine wave

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

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

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

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

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