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Electronic Principles

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

0.41666666666667
0.955 A
2.02 A
None of these
0.02 A

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Electronic Principles
A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?

None of these
0.05 mA
3.75 mA
3.2 mA
13 mA

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Electronic Principles
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?

200 W
20 W
100 W
1000 W
None of these

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Electronic Principles
What causes the depletion layer?

Ions
None of these
Doping
Barrier potential
Recombination

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Electronic Principles
As the temperature increases, the current gain

contant
decreases
None of these
can be any of the above
increases

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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?

350 µA
300 µA
250 µA
None of these
0.25 µA

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