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Electronic Principles

Electronic Principles
An audio transformer has a turn ratio of 9, What is its impedance ratio?

85
6
9
81
None of these

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

170 V
180 V
None of these
120 V
100 V

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

100 Ohm
30 Ohm
10 Ohm
20 Ohm
None of these

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Electronic Principles
Silicon atoms combine into an orderly pattern called a

Covalent bond
Crystal
Valence orbit
None of these
Semiconductor

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

4
48
14
29
None of these

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Electronic Principles
A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?

None of these
200 mW
10 mW
300 mW
20 mW

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