Electronic Principles
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?

300 mA
208 mA
None of these
200 mA
7.8 mA

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

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

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