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Electronic Principles

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

36 V
60 V
None of these
40 V
0 V

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Electronic Principles
A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?

707 V
208 V
700 V
None of these
651 V

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Electronic Principles
What is the inductive reactance of a 2-H coil operating at 60 Hz?

60 Ohm
30 Ohm
754 Ohm
120 Ohm
None of these

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Electronic Principles
The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:

No more than 10% less than the primary current
Twice the primary current
One-half the primary current
Same as the primary current
None of these

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Electronic Principles
In a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point

nowhere
down
up
None of these
off the load line

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Electronic Principles
Doubling the number of turns of wire in an inductor:

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

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