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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?

208 V
700 V
None of these
707 V
651 V

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Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

None of these
18.8 V
20 V
0.17 V
10.17 V

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Electronic Principles
A typical light switch in your home is a:

momentary push button switch
toggle switch
None of these
knife switch
rotary switch

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Electronic Principles
Positive ions are atoms that have

None of these
Lost an electron
Lost a proton
Gained an electron
Gained a proton

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Electronic Principles
The nucleus of the copper atom contains how many protons?

18
4
None of these
29
1

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Electronic Principles
To get the Thevenin voltage, you have to

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

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