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Electronic Principles

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

Primary voltage
Secondary voltage
None of these
Neither
Impossible to say

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Electronic Principles
The merging of a free electron and a hole is called

Lifetime
Thermal energy
Recombination
None of these
Covalent bonding

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Electronic Principles
What kind of device is a diode?

Unipolar
Nonlinear
None of these
Linear
Bilateral

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Electronic Principles
What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding?

43922
None of these
43891
3
2

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Electronic Principles
What form of energy is used for creating static electricity?

Chemical energy
Solar energy
None of these
Light energy
Mechanical energy

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Electronic Principles
What is the phase shift between total current and voltage, if 100 ohm resistor connected in parallel with an inductor that has a reactance of 200W?

None of these
180 degree
90 degree
0 degree
26.6 degree

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