Electronic Principles
A farad is defined as the amount of capacitance necessary for:

changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing
causing an ac phase shift greater than 90 degree
None of these
dissipating 1 W of power
storing 1 V for 1 second

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Electronic Principles
The total impedance of a parallel RLC circuit:

is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
is maximum at the resonant frequency
always increases as the applied frequency increases
None of these
always decreases as the applied frequency increases

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

cuts the current through the inductors one-half
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
None of these
doubles the amount of current through the inductors
has no effect on the current through the inductors

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Electronic Principles
Which one of the following statements is true for voltage in a series circuit?

The total voltage of a series circuit is equal to the total current divided by the total resistance
The total voltage in a series circuit is equal to the average value of the individual voltages
The total voltage in a series circuit is always less than the value of the smallest voltage
The total voltage is equal to the sum of the individual voltages in a series circuit
None of these

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