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Electronic Principles

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

100 V
120 V
170 V
180 V
None of these

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Electronic Principles
How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?

None of these
0.41666666666667
0.955 A
2.02 A
0.02 A

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Electronic Principles
Absolute Zero temperature equals

None of these
0o C
25o C
-276o C
-273o C

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Electronic Principles
Which one of the following kinds of materials has the highest permeability?

A paramagnetic material
A diamagnetic material
None of these
A ferromagnetic material
All of these

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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?

20 V
18.8 V
10.17 V
None of these
0.17 V

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

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

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