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Electronic Principles

Electronic Principles
Silicon atoms combine into an orderly pattern called a

Semiconductor
Crystal
None of these
Covalent bond
Valence orbit

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

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Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

36 V
None of these
0 V
60 V
40 V

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Electronic Principles
A dielectric material is:

a poor conductor of electrostatic fields
a good insulator
a good conductor of magnetic fields
None of these
a good conductor

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Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit?

Number of lines of force
None of these
Reluctance
Magnetomotive force
Flux density

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Electronic Principles
Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current?

P = IE
I = P/E
P = I2R
None of these
P = E2/R

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