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Electronic Principles

Electronic Principles
How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

325 kW
80 W
0.625 W
0.24 W
None of these

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Electronic Principles
Inductive reactance is measured in units of:

volts per second
henrys
None of these
amperes per second
Ohm

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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?

3.75 mA
13 mA
0.05 mA
3.2 mA
None of these

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Electronic Principles
A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode?

55 A
55.86 A
16.3 mA
18.2 mA
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?

50 A
20 A
None of these
0.20833333333333

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Electronic Principles
A battery is a device composed of one or more:

solar cells
piezoeletric cells
voltage generators
chemical cells
None of these

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