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Electronic Principles

Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

60 V
36 V
40 V
None of these
0 V

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Electronic Principles
A device that converts light energy to electrical energy is called a:

photodiode
photo transistor
None of these
thermocouple
solar cell

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Electronic Principles
The nucleus of the copper atom contains how many protons?

18
4
None of these
29
1

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

120 Ohm
30 Ohm
754 Ohm
None of these
60 Ohm

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Electronic Principles
The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?

17.5 mA
175 mA
1750 mA
None of these
1.75 mA

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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?

None of these
350 µA
250 µA
0.25 µA
300 µA

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