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Electronic Principles

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

3.2 mA
13 mA
0.05 mA
3.75 mA
None of these

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

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

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Electronic Principles
Inductive reactance is measured in units of:

volts per second
None of these
amperes per second
Ohm
henrys

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Electronic Principles
The basic unit of measurement for current is the:

ohm
ampere
watt
None of these
volt

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Electronic Principles
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?

10 k Ohm
None of these
20 k Ohm
2 k Ohm
1 k Ohm

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Electronic Principles
The total impedance of a series RLC circuit:

always decreases as the applied frequency increases
always increases as the applied frequency increases
None of these
is minimum at the resonant frequency
is maximum at the resonant frequency

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