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Electronic Principles

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

Lifetime
Recombination
Covalent bonding
Thermal energy
None of these

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Electronic Principles
What is the barrier potential of a silicon diode at room temperature?

1 V
2 m V per degree Celsius
0.7V
None of these
0.3V

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Electronic Principles
Doubling the number of turns of wire in an inductor:

reduces the value of inductance by one-half
reduces the value of inductance by one-fourth
multiplies the value of inductance by four
None of these
multiplies the value of inductance by two

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

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

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Electronic Principles
Positive ions are atoms that have

Lost an electron
Gained a proton
Lost a proton
None of these
Gained an electron

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Electronic Principles
Most AC power is obtained from:

generators
None of these
oscillators
lightning
batteries

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