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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?

157 raA
0.995 mA
None of these
2.02 A
0.151 mA

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Electronic Principles
A device that converts mechanical pressure to electrical energy is called a:

photodiode
piezoelectric device
None of these
nicad cell
solar cell

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

10 Ohm
20 Ohm
None of these
30 Ohm
100 Ohm

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Electronic Principles
Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold

22, 000 Ohm, 10%
220 Ohm, 5%
220 Ohm, 10%
22,000 Ohm, 5%
None of these

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Electronic Principles
What form of energy is used to maintain an imbalance of charges between the terminals of a battery?

Mechanical energy
Chemical energy
Electronical energy
None of these
Solar energy

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Electronic Principles
The rotating coil of wire in an electric motor is called the:

brush
loop
armature
commutator
None of these

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