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

solar cell
photodiode
piezoelectric device
None of these
nicad cell

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Electronic Principles
The period of a waveform is:

the time required to complete one full cycle
equal to 0.707 times the peak amplitude
None of these
the time required for the voltage to rise from 10% to 90% of the peak amplitude
the number of cycles completed in one second

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

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Electronic Principles
Voltage is

The number of free electrons in an atom
Trie force that causes electrons to flow
The flow of charged particles through a material
None of these
The smallest electrically charged particle

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