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Electronic Principles

Electronic Principles
What causes the depletion layer?

Barrier potential
Ions
Doping
None of these
Recombination

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

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

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Electronic Principles
How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

0.625 W
0.24 W
325 kW
None of these
80 W

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Electronic Principles
The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values?

None of these
0.93 W
0.041666666666667
0.93 V
9.3 W

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Electronic Principles
The Thevenin resistance is equal in value to the

Load resistance
Internal resistance of a Morton circuit
None of these
Open-load resistance
Half the load resistance

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Electronic Principles
The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio?

4
180
0.5
None of these
0.25

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