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Electronic Principles

Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

700 V
651 V
707 V
None of these
208 V

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Electronic Principles
The valence electron of a copper atom experiences what kind of attraction toward the nucleus?

Strong
None of these
Neutral
Weak
Impossible to say

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Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

844.5 Ohm
None of these
692.2 Ohm
1234 Ohm
3890 Ohm

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Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

Ideal current source and parallel resistor
Ideal current source and series resistor
Ideal voltage source and series resistor
Ideal voltage source and parallel resistor
None of these

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Electronic Principles
When the graph of current versus voltage is a straight line, the device is referred to as

Linear
Bipolar
Nonlinear
None of these
Active

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Electronic Principles
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

I = ER
I = E/R
E = I2R
E = PR
None of these

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