Electronic Principles
The peak value of a sine waveform is:

None of these
the amplitude at 1.41 times the maximum value
the maximum positive or negative value
the amplitude at 90% of the maximum value
the amplitude at 70.7% of the maximum value

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Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Current is induced in a conductor that is moving through a magnetic field
None of these
Like magnetic poles repel, while unlike poles attract
Like magnetic poles attract, while unlike poles repel
Current flowing through a conductor generates a magnetic field

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Electronic Principles
Which one of the following statements is true?

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

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