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Electronic Principles

Electronic Principles
A transistor has how many doped regions?

1
None of these
4
3
2

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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

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

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Electronic Principles
If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point

None of these
nowhere
up
off the load line
down

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Electronic Principles
Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?

10 Ohm
20 Ohm
None of these
30 Ohm
100 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:

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

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Electronic Principles
Reducing the amount of current through an inductor:

multiplies the value of inductance by four
None of these
has no effect on the inductance
reduces the value of inductance by one-half
multiplies the value of inductance by two

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