Electronic Principles
A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?

1000 V and a series resistance of 10 k Ohm
100 V and a series resistance of 10 k Ohm
1000 V and a parallel resistance of 10 kOhm
None of these
100 V and a parallel resistance of 10 k Ohm

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Electronic Principles
In a pure inductor:

ac current and voltage are exactly in phase
ac current is converted to dc voltage
ac current leads the voltage by 90 degree
None of these
ac current lags the voltage by 90 degree

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Electronic Principles
Which one of the following phrasers best describes flux density?

The opposition to a build-up of magnetic fields
The force that maintains lines of force
The concentration of lines of magnetic force
None of these
The rate of change of the number of lines of magnetic force

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Electronic Principles
What is the difference between a conductor and an insulator?

The difference between conductors and insulators depends on how they are used
None of these
An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all
A conductor allows current to flow much easier than an insulator does
An insulator allows current to flow much easier than a conductor does

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Electronic Principles
Voltage is

None of these
Trie force that causes electrons to flow
The smallest electrically charged particle
The flow of charged particles through a material
The number of free electrons in an atom

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