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Electronic Principles

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

85
6
81
None of these
9

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Electronic Principles
Current can flow through a normally open push button switch as long as:

you are pressing the button
its contact remain open
you are not pressing the button
its contact remain open
None of these

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Electronic Principles
The nucleus of the copper atom contains how many protons?

4
None of these
29
18
1

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Electronic Principles
If the base supply voltage increases, the Q point moves

nowhere
down
off the load line
up
None of these

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Electronic Principles
Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

6 Ohm
5 Ohm
50 Ohm or more
None of these
100 Ohm

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Electronic Principles
Doubling the operating frequency of a purely capacitive circuit:

None of these
has no effect on the total circuit current
cuts the total current by one-half
thrice the amount of total current
doubles the amount of total current

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