Electronic Principles
A device that converts chemical energy to electrical energy is called a:

chemical cell
None of these
solar cell
thermocouple
electric device

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

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

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

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