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Electronic Principles

Electronic Principles
In a step-down transformer, which is larger?

None of these
Secondary voltage
Neither
Impossible to say
Primary voltage

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Electronic Principles
The Norton current is sometimes called the

Open-load current
Thevenin voltage
Thevenin current
None of these
Shorted-load current

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Electronic Principles
Positive ions are atoms that have

Gained a proton
Lost an electron
None of these
Gained an electron
Lost a proton

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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
None of these
One-half the primary current
Same as the primary current
Twice the primary current

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Electronic Principles
An audio transformer has a turn ratio of 9, What is its impedance ratio?

85
None of these
9
6
81

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Electronic Principles
A device that converts thermal energy to electrical energy is called a:

chemical cell
solar cell
piezoelectric devices
None of these
thermocouple

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