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Electronic Principles

Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

40 V
36 V
None of these
0 V
60 V

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Electronic Principles
When the Q point moves along the load line, the voltage increases when the current

Can be any of above
Increases
None of these
Stays the same
Decreases

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Electronic Principles
Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current?

0.3 A
None of these
0.2 A
0.4 A
0.6 A

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

Solar energy
None of these
Chemical energy
Light energy
Mechanical energy

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Electronic Principles
A device that converts chemical energy to electrical energy is called a:

electric device
None of these
chemical cell
thermocouple
solar cell

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Electronic Principles
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

Valence electrons
None of these
Thermal energy
Doping
Free electrons

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