Electronic Principles
In a pure inductor:

None of these
ac current and voltage are exactly in phase
ac current leads the voltage by 90 degree
ac current lags the voltage by 90 degree
ac current is converted to dc voltage

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Electronic Principles
Which one of the following statements is true?

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

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Electronic Principles
The north pole of a magnet is the one:

that has its molecules arranged in a random pattern
that would be attracted to the earth's south magnetic pole
None of these
that would be attracted to the earth's north magnetic pole
that would be repelled by the south pole of another magnet

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Electronic Principles
Which one of the following statements applies to common auto batteries?

None of these
Auto batteries are secondary wet-cell batteries
Auto batteries are primary wet-cell batteries
Auto batteries are primary dry-cell batteries
Auto batteries are secondary dry-cell batteries

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