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

chemical cell
solar cell
thermocouple
electric device
None of these

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Electronic Principles
Which one of the following statements is true?

None of these
There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency
All of these
Power dissipation of a pure capacitor decreases with operating frequency
Power dissipation of a pure capacitor increases with operating frequency

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

The total voltage lags the total current by less than 90
The total voltages is equal to the sum of the voltages across the resistance and inductance
The voltage always has the same amplitude and phase for every part of the circuit
None of these
The total voltage is less than the sum of the voltages across the resistance and inductance

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