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Electronic Principles

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

0.995 mA
0.151 mA
2.02 A
None of these
157 raA

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

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

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Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

200 k Ohm or less
20 k Ohm or more
20 km or less
200 k Ohm or more
None 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?

18.8 V
None of these
20 V
10.17 V
0.17 V

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Electronic Principles
For normal operation of the transistor, the collector diode has to be

Reverse-biased
Operating in the breakdown region
None of these
Nonconducting
Forward-biased

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

70.7Ohm
60 Ohm
99.3 Ohm
250 Ohm
None of these

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