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Electronic Principles

Electronic Principles
If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point

down
off the load line
None of these
up
nowhere

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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?

None of these
15 V
8 V
7.5 V
16 V

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

thermocouple
photo transistor
solar cell
None of these
photodiode

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Electronic Principles
To get the Norton current, you have to

None of these
Short the voltage source
Open the voltage source
Short the load resistor
Open the load resistor

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Electronic Principles
An ideal voltage source has

Zero internal resistance
A load dependent voltage
None of these
Infinite internal resistance
A load-dependent current

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Electronic Principles
The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio?

None of these
0.25
180
4
0.5

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