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Electronic Principles

Electronic Principles
What is the algebraic sum of this series of values:+2, -3, -6,+4?

-3
None of these
2
-6

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Electronic Principles
At room temperature a conductor has low many holes?

many
Same number as free electrons
None of these
less than the free electrons
Only those produced by thermal energy

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Electronic Principles
When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a:

parallel RC circuit
parallel RL circuit
None of these
parallel RLC circuit operated above its resonant frequency
purely resistive circuit

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Electronic Principles
What form of energy is used for creating static electricity?

Chemical energy
None of these
Solar energy
Mechanical energy
Light energy

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Electronic Principles
The rotating coil of wire in an electric motor is called the:

commutator
None of these
brush
loop
armature

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Electronic Principles
Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current?

0.6 A
0.4 A
0.2 A
0.3 A
None of these

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