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Electronic Principles

Electronic Principles
The merging of a free electron and a hole is called

None of these
Thermal energy
Recombination
Lifetime
Covalent bonding

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Electronic Principles
Holes act like:

Atoms
Positive charges
None of these
Negative charges
Crystals

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Electronic Principles
To get the Thevenin voltage, you have to

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

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Electronic Principles
A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?

None of these
20 A
0.20833333333333
50 A

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Electronic Principles
The rise time of a pulse waveform is the time required for the voltage to rise:

from 10% of the peak value to 70.7% of the peak value
from 10% of the peak value to 90% of the peak value
None of these
from zero to its rms value
from zero to its peak value

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Electronic Principles
Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?

Into this page
None of these
Counterclockwise
Clockwise
Out of this page

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