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Electronic Principles

Electronic Principles
Which is the most widely used semiconductor?

None of these
Copper
All of these
Germanium
Silicon

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Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

None of these
10.17 V
0.17 V
20 V
18.8 V

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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
180 degree
0 degree
None of these
90 degree

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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
99 Ohm - 102 ohm
90 Ohm - 101 ohm
90 Ohm - 110 ohm

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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?

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

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

7.5 V
None of these
8 V
16 V
15 V

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