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Electronic Principles

Electronic Principles
A device that converts mechanical into electrical energy is?

None of these
chemical cell
thermocouple
solar cell
generator

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Electronic Principles
The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

Twice the primary current
No more than 10% less than the primary current
Same as the primary current
None of these
One-half the primary current

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Electronic Principles
Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value?

None of these
30.4 V
38.74 V
35.4 V
37.4 V

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Electronic Principles
A basic capacitor is composed of:

two coils separated by a conductor
two conductors separated by a dielectric
two coils separated by a dielectric
None of these
two dielectrics separated by a conductor

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Electronic Principles
What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it?

6 W
None of these
3 W
64 W
122 W

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

0.5A
7200 A
0.083333333333333
None of these
180 A

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