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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?

2
3
43922
43891
None of these

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Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

7200 A
180 A
0.5A
0.083333333333333
None of these

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Electronic Principles
To get the Thevenin voltage, you have to

Open the load resister
Open the voltage source
None of these
Short the load resistor
Short the voltage source

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Electronic Principles
A dielectric material is:

a good conductor of magnetic fields
None of these
a good insulator
a poor conductor of electrostatic fields
a good conductor

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Electronic Principles
To get the Norton current, you have to

None of these
Short the load resistor
Open the voltage source
Open the load resistor
Short the voltage source

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

60 Ohm
None of these
70.7Ohm
250 Ohm
99.3 Ohm

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