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AC Fundamentals, Circuit and Circuit Theory

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

R2C
R/C
RC2
RC

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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
Have current in each section equal to the line current
Act like a resistor of low value
Have a high impedance

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AC Fundamentals, Circuit and Circuit Theory
The peak value of a sine wave is 200 V. Its average value is

127.4 V
282.8 V
141.4 V
200 V

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AC Fundamentals, Circuit and Circuit Theory
In a parallel R-C circuit, the current always _________the applied voltage.

None of the listed here
Leads
Remains in phase with
Lags

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AC Fundamentals, Circuit and Circuit Theory
The inductance of a coil can be increased by

Increasing core length
Choosing core material having high relative permeability
Decreasing the number of turns
Decreasing the diameter of the former

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

0.636 Emax
0.434 Emax
0.707 Emax
None of the listed here

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