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Electronic Principles

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

0.24 W
None of these
80 W
0.625 W
325 kW

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Electronic Principles
How many protons does the nucleus of a silicon atom contain?

48
29
14
None of these
4

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Electronic Principles
A battery is a device composed of one or more:

voltage generators
None of these
chemical cells
solar cells
piezoeletric cells

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Electronic Principles
A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?

None of these
410 Ohm
400 Ohm
310 Ohm
550 Ohm

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

Retentivity
Permeance
Reluctance
Permeability
There is no valid comparison

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Electronic Principles
At cut off, the Q point is at

upper end of the load line
lower end of the load line
middle of the load line
None of these
infinity

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