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Electronic Principles

Electronic Principles
How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source?

2.02 A
None of these
0.151 mA
157 raA
0.995 mA

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

None of these
7.5 V
8 V
3 V
16 V

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

99.3 Ohm
250 Ohm
None of these
70.7Ohm
60 Ohm

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Electronic Principles
A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff?

20 k Ohm
1 k Ohm
2 k Ohm
None of these
10 k Ohm

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Electronic Principles
The knee voltage of a diode is approximately equal to the

Barrier potential
None of these
Applied voltage
Forward voltage
Breakdown voltage

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Electronic Principles
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:

commutator
armature
rotor
None of these
battery

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