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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Capacitors for power factor correction are rated in

kV
kVAR
kW
kVA

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AC Fundamentals, Circuit and Circuit Theory
Wire-wound resistors are unsuitable for use at high frequencies because they

Consume more power
Exhibit unwanted inductive and capacitive effects
Are likely to melt under excessive eddy current heat
Create more electrical noise

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

Triangular wave
Half wave rectified sine wave
Sine wave
Square wave

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AC Fundamentals, Circuit and Circuit Theory
The time constant of a series R-C circuit is given by

RC
R2C
R/C
RC2

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

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

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AC Fundamentals, Circuit and Circuit Theory
For a sine wave with peak value Emax ___________ the average value is

0.707 Emax
0.636 Emax
None of the listed here
0.434 Emax

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