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Electronic Principles

Electronic Principles
When the collector current increases, what does the current gain do?

any of the above
increases
None of these
stays the same
decreases

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Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

100 Ohm
6 Ohm
50 Ohm or more
None of these
5 Ohm

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

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

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Electronic Principles
What is the inductive reactance of a 2-H coil operating at 60 Hz?

120 Ohm
30 Ohm
60 Ohm
None of these
754 Ohm

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Electronic Principles
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?

1000 A
100 A
0.41666666666667
None of these
0.1 A

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Electronic Principles
What is one important thing transistors do?

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

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