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Electronic Principles

Electronic Principles
Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage?

120 V
100 V
None of these
170 V
180 V

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Electronic Principles
At room temperature an intrinsic silicon crystal acts approximately like

a piece of copper wire
a conductor
None of these
a battery
an insulator

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Electronic Principles
The direction of electron current flow is:

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

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

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

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Electronic Principles
When operating below its resonant frequency, a series RLC circuit has the characteristics of a:

series RC circuit
series RL circuit
series RLC circuit operated above its resonant frequency
None of these
purely resistive circuit

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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?

707 V
208 V
None of these
651 V
700 V

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