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Electronic Principles

Electronic Principles
When the collector current increases, what does the current gain do?

any of the above
None of these
decreases
stays the same
increases

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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
0.17 V
20 V
18.8 V
10.17 V

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

piezoelectric devices
thermocouple
solar cell
chemical cell
None of these

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

89.3 ohm
None of these
77.7 ohm
88.8 ohm
224 ohm

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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?

0 degree
180 degree
90 degree
None of these
26.6 degree

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Electronic Principles
The Thevenin resistance is equal in value to the

Internal resistance of a Morton circuit
Open-load resistance
Half the load resistance
Load resistance
None of these

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