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Electronic Principles

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

ohm
volt
ampere
watt
None of these

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Electronic Principles
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

20 A
0.20833333333333
50 A
None of these

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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?

13 mA
0.05 mA
None of these
3.2 mA
3.75 mA

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Electronic Principles
The emitter diode is usually

Nonconducting
Forward-biased
Operating in the breakdwon region
Reverse-biased
None of these

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Electronic Principles
Inductive reactance is measured in units of:

volts per second
None of these
amperes per second
henrys
Ohm

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Electronic Principles
What are the main parts of an atom?

Electrons, protons, and ions
Electrons, protons, and neutrons
Electrons, ions, and neutrons
None of these
Protons only

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