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Electronic Principles

Electronic Principles
Who invented the first junction transistor?

Smith
Fisher
None of these
Shockley
Gomes

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Electronic Principles
Inductive reactance is measured in units of:

Ohm
None of these
henrys
volts per second
amperes per second

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Electronic Principles
An audio transformer has a turn ratio of 9, What is its impedance ratio?

None of these
81
9
6
85

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Electronic Principles
Which one of the following devices is most often used for measuring electrical potential difference?

None of these
Ohmmeter
Wattmeter
Voltmeter
Ammeter

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Electronic Principles
At room temperature an intrinsic semiconductor has

No holes
many holes
None of these
many free electrons
a few free electrons and holes

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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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