Electronic Principles
What is the smallest number of polarities required for current flow?

Four - two negative and two positive
One - a negative terminal
Three - negative, positive and neutral terminals
Two - a negative terminal and a positive terminal
None of these

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Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

The algebraic sum of voltages entering and leaving a point is equal to zero
The algebraic sum of voltages in a loop is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
The total voltage in a parallel circuit is less than the value of the smallest voltage
None of these

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

None of these
peak the current and round off the voltage waveforms
round off both the voltage and current waveforms
peak both the voltage and current waveforms
peak the voltage and round off the current waveforms

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The longer the period of a waveform, the lower its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency
The higher the amplitude of a waveform, the higher its frequency
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these

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