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Electronic Principles

Electronic Principles
A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?

300 mW
10 mW
200 mW
None of these
20 mW

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Electronic Principles
Doubling the number of turns of wire in an inductor:

multiplies the value of inductance by two
reduces the value of inductance by one-half
reduces the value of inductance by one-fourth
None of these
multiplies the value of inductance by four

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Electronic Principles
Who invented the first junction transistor?

Smith
Gomes
Fisher
None of these
Shockley

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

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

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Electronic Principles
Which one of the following kinds of materials has the highest permeability?

None of these
A diamagnetic material
A paramagnetic material
All of these
A ferromagnetic material

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Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

200 k Ohm or less
200 k Ohm or more
20 k Ohm or more
20 km or less
None of these

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