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Electronic Principles

Electronic Principles
How may valence electrons does a silicon atom have?

1
4
None of these
2

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Electronic Principles
1 Microfarad is the same as:

1 millionth of a picofarad
1 million farads
1000 millifarads
None of these
1 million picofarads

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Electronic Principles
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

60 Ohm
10 Ohm
100 Ohm or more
50 Ohm
None of these

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Electronic Principles
Who invented the first junction transistor?

Smith
Fisher
Gomes
None of these
Shockley

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Electronic Principles
A typical light switch in your home is a:

momentary push button switch
knife switch
None of these
toggle switch
rotary switch

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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?

None of these
0.4 A
0.3 A
0.6 A
0.2 A

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