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Electronic Principles

Electronic Principles
What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding?

43891
3
43922
2
None of these

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Electronic Principles
Doubling the diameter of the coil in an inductor:

None of these
reduces the value of inductance by one-fourth
reduces the value of inductance by one-half
multiplies the value of inductance by two
multiplies the value of inductance by four

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Electronic Principles
The basic unit of measurement for resistance is the:

None of these
ampere
ohm
watt
volt

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Electronic Principles
A real voltage source has

None of these
Infinite internal resistance
A large internal resistance
A small internal resistance
Zero internal resistance

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Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

0.17 V
None of these
18.8 V
20 V
10.17 V

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Electronic Principles
The equivalent of 1 megohms is:

None of these
one million ohms
1 k ohm
one-millionth of an ohm
100,000 ohm

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