Electronic Principles
Thevenin theorem replaces a complicated circuit facing a load by an

Ideal voltage source and series resistor
None of these
Ideal voltage source and parallel resistor
Ideal current source and series resistor
Ideal current source and parallel resistor

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage causes current to flow in two directions at the same time
The voltage remains at one polarity and at a steady level
The voltage remains at one polarity but changes value periodically
The voltage reverses polarity periodically
None of these

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Electronic Principles
The south pole of a magnet is the one:

None of these
that would be attracted to the earths north magnetic pole
that has its molecules arranged in a random pattern
that would be repelled by the north pole of another magnet
that would be attracted to the earth's south magnetic pole

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

The total voltage is greater than 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
None of these
The total voltage is equal to the sum of the voltages across the resistance and capacitance
The total voltage is less than the sum of the voltages across the resistance and capacitance

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