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Electronic Principles

Electronic Principles
Holes act like:

Negative charges
Crystals
Atoms
Positive charges
None of these

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

loop
armature
brush
None of these
commutator

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Electronic Principles
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

None of these
E = PR
I = ER
E = I2R
I = E/R

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Electronic Principles
Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question?

1000 W
100 W
20 W
200 W
None of these

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Electronic Principles
The total impedance of a series RLC circuit:

always increases as the applied frequency increases
None of these
is minimum at the resonant frequency
always decreases as the applied frequency increases
is maximum at the resonant frequency

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Electronic Principles
A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?

None of these
98 Ohm - 100.1 ohm
90 Ohm - 101 ohm
99 Ohm - 102 ohm
90 Ohm - 110 ohm

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