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

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

ANSWER DOWNLOAD EXAMIANS APP

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

The total voltage lags the total current by less than 90
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is equal to the sum of the voltages across the resistance and inductance
The total voltages is less than the sum of the voltages across the resistance and inductance
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
A low-pass filter:

passes higher-frequency signals and reduces lower-frequency signals
reduces the level of all frequencies by a significant amount
has no effect on ac signals
passes lower-frequency signals and reduces higher-frequency signals
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is equal to the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

inductive reactance is greater than the capacitive reactance
inductive reactance is equal to the capacitive reactance
capacitive reactance is greater than the inductive reactance
the difference between inductive and capacitive reactance is equal to the resistance
None of these

ANSWER DOWNLOAD EXAMIANS APP