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Electronic Principles

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

0.5A
7200 A
180 A
None of these
0.083333333333333

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Electronic Principles
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?

550 Ohm
None of these
410 Ohm
310 Ohm
400 Ohm

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Electronic Principles
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point

off the load line
up
nowhere
None of these
down

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Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

None of these
Voltmeter
Ohmmeter
Wattmeter
Ammeter

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

has no effect on the total circuit current
thrice the amount of total current
None of these
cuts the total current by one-half
doubles the amount of total current

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Electronic Principles
What kind of device is a diode?

Unipolar
Bilateral
None of these
Nonlinear
Linear

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