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

solar cell
chemical cell
None of these
piezoelectric devices
thermocouple

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

The impedance is greater than the sum of the resistance and capacitive reactance
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is equal to the sum of the resistance and capacitive reactance
The impedance is greater than either the resistance or capacitive reactance but less than their sum
None of these

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

None of these
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
All of these

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