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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?

157 raA
None of these
0.995 mA
2.02 A
0.151 mA

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Electronic Principles
1 Microfarad is the same as:

1 million farads
1000 millifarads
1 millionth of a picofarad
None of these
1 million picofarads

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Electronic Principles
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?

None of these
350 µA
250 µA
0.25 µA
300 µA

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Electronic Principles
What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding?

43922
2
None of these
43891
3

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Electronic Principles
What is one important thing transistors do?

Regulate voltage
Rectify line voltage
Amplify weak signals
None of these
Emit light

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Electronic Principles
In an intrinsic semiconductor, the number of free electrons

Is less than the number of holes
None of these
Is greater than the number of holes
Equals the number of holes
Impossible to say

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