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Electronic Principles

Electronic Principles
What kind of device is a diode?

Linear
Bilateral
Nonlinear
None of these
Unipolar

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Electronic Principles
Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold

220 Ohm, 5%
22, 000 Ohm, 10%
220 Ohm, 10%
22,000 Ohm, 5%
None of these

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Electronic Principles
In a step-down transformer, which is larger?

Primary voltage
None of these
Neither
Secondary voltage
Impossible to say

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Electronic Principles
What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz?

312 Ohm
less than 1 Ohm
None of these
690 Ohm
1590 Ohm

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Electronic Principles
The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

Twice the primary current
None of these
One-half the primary current
Same as the primary current
No more than 10% less than the primary current

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Electronic Principles
What is the smallest number of polarities required for current flow?

Four - two negative and two positive
Three - negative, positive and neutral terminals
One - a negative terminal
None of these
Two - a negative terminal and a positive terminal

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