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Electronic Principles

Electronic Principles
Holes act like:

Atoms
None of these
Positive charges
Crystals
Negative charges

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Electronic Principles
Reducing the amount of current through an inductor:

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

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Electronic Principles
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?

0.25 µA
300 µA
350 µA
250 µA
None of these

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Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit?

Magnetomotive force
Reluctance
Number of lines of force
None of these
Flux density

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

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

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Electronic Principles
The total impedance of a series RLC circuit:

always decreases as the applied frequency increases
None of these
is minimum at the resonant frequency
always increases as the applied frequency increases
is maximum at the resonant frequency

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