Electronic Principles
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

68.4 mA
24.2 mA
None of these
28.4 mA
34.4 mA

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

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

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Electronic Principles
Which one of the following statements best applies to a parallel RLC circuit?

The sum of the current is always less than the applied current
None of these
The voltage waveform for each component always has the same amplitude and phase as the applied voltage
All of these
The current waveform for each component always has the same amplitude and phase as the applied current

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

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

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