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Electronic Principles

Electronic Principles
The equivalent of 1 micro A is:

one million amperes
1000 A
None of these
one-millionth of an ampere
10000A

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Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

None of these
707 V
208 V
651 V
700 V

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Electronic Principles
A battery is a device composed of one or more:

voltage generators
piezoeletric cells
None of these
chemical cells
solar cells

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Electronic Principles
The direction of conventional current flow is:

from neutral to positive
from negative to positive
from positive to negative
None of these
from left to right

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Electronic Principles
Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

I = E/R
I = ER
E = I2R
E = PR
None of these

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Electronic Principles
The graph of current gain versus collector current indicates that the current gain

varies slightly
is contant
equals the collector current divided by the base current
None of these
varies enormously

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