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Electronic Principles

Electronic Principles
What causes the depletion layer?

Barrier potential
Ions
Doping
None of these
Recombination

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Electronic Principles
Doubling the operating voltage of a purely capacitive circuit:

doubles the amount of capacitive reactance
None of these
multiplies the capacitive reactance by 7
has no effect on the capacitive reactance
cuts the capacitive reactance in half

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Electronic Principles
Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91?

200 W
100 W
None of these
20 W
1000 W

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Electronic Principles
A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage?

8 V
15 V
None of these
7.5 V
16 V

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Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

208 V
700 V
651 V
707 V
None of these

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Electronic Principles
Doubling the number of turns of wire in an inductor:

multiplies the value of inductance by four
multiplies the value of inductance by two
reduces the value of inductance by one-fourth
None of these
reduces the value of inductance by one-half

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