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Electronic Principles

Electronic Principles
If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage?

40 V
None of these
0 V
60 V
36 V

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Electronic Principles
If a load resistance is 1 kW, a stiff current source has a resistance of

Less than 10 Ohm
At least 10 Ohm
None of these
Less than 100 k Ohm
More than 100 k Ohm

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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?

None of these
18.8 V
20 V
10.17 V
0.17 V

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Electronic Principles
A real voltage source has

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

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Electronic Principles
Doubling the operating frequency of an inductive circuit:

None of these
multiplies the inductive reactance by 6.28
doubles the amount of inductive reactance
cuts the inductive reactance in half
has no effect on the inductive reactance

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Electronic Principles
The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?

1750 mA
17.5 mA
175 mA
None of these
1.75 mA

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