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?

0.25 µA
300 µA
250 µA
350 µA
None of these

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Electronic Principles
Which one of the following statements applies to common auto batteries?

Auto batteries are primary wet-cell batteries
None of these
Auto batteries are secondary dry-cell batteries
Auto batteries are secondary wet-cell batteries
Auto batteries are primary dry-cell batteries

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Electronic Principles
The total capacitance of a series capacitor circuit is:

equal to the source voltage divided by total current
equal to the sum of the individual capacitance values
None of these
equal to the sun of the individual capacitive-reactance values
less than the value of the smallest capacitor

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Electronic Principles
Waveforms are graphs that show:

amplitude on the vertical axis and the passage of time on the horizontal axis
frequency on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis
None of these
the passage of time on the vertical axis and amplitude on the horizontal axis

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