Electronic Principles
A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding?

600 V
24 V
4.73
0.4 V
None of these

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

The higher the amplitude of a waveform, the higher its frequency
Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these
The longer the period of a waveform, the lower its frequency
The actual frequency of a sine waveform is 1.41 times the working frequency

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Electronic Principles
Which one of the following principles best describes the basic operation of a generator?

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

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