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Electronic Principles

Electronic Principles
How many types of flow are there in a semiconductor?

1
None of these
2
3

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Electronic Principles
What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W?

26.6 degree
90 degree
0 degree
180 degree
None of these

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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?

100 Ohm
30 Ohm
10 Ohm
20 Ohm
None of these

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Electronic Principles
An audio transformer has a turn ratio of 9, What is its impedance ratio?

81
85
None of these
6
9

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Electronic Principles
Which one of the following kinds of materials has the lowest permeability?

A feiTomagnetic material
A diamagnetic material
All of these
A paramagnetic material
None of these

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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?

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

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