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Electronic Principles

Electronic Principles
Who invented the first junction transistor?

Gomes
Shockley
Smith
Fisher
None of these

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Electronic Principles
Which one of the following statements regarding ac circuits is correct?

Current lags the voltage through a resistor
None of these
Current and voltages are in phase through a resistor
Current leads the voltage through a resistor
All of these

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

solar cell
electric device
None of these
chemical cell
thermocouple

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Electronic Principles
Which one of the following kinds of materials has the lowest permeability?

All of these
A feiTomagnetic material
A paramagnetic material
A diamagnetic material
None of these

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Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

Lead-acid battery
Mercury-cell battery
None of these
Zinc-carbon battery
Nicad battery

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Electronic Principles
What kind of device is a diode?

Unipolar
Linear
Nonlinear
None of these
Bilateral

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