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Electronic Principles

Electronic Principles
How many protons does the nucleus of a silicon atom contain?

29
14
None of these
4
48

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Electronic Principles
Which one of the following statements regarding ac circuits is correct?

Current leads the voltage through a resistor
None of these
Current and voltages are in phase through a resistor
Current lags the voltage through a resistor
All of these

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Electronic Principles
Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

120 V
170 V
None of these
100 V
180 V

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Electronic Principles
As the temperature increases, the current gain

decreases
contant
can be any of the above
increases
None of these

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Electronic Principles
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

34.4 mA
None of these
28.4 mA
24.2 mA
68.4 mA

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Electronic Principles
To get the Norton current, you have to

Open the voltage source
Short the load resistor
None of these
Open the load resistor
Short the voltage source

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