Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

Nicad battery
Zinc-carbon battery
Lead-acid battery
Mercury-cell battery
None of these

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Electronic Principles
The total inductance of a series inductor circuit is:

equal to the sum of the individual inductive-reactance values
equal to the source voltage divided by total current
equal to the sum of the individual inductance values
less than the value of the smallest inductor
None of these

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Electronic Principles
In a pure inductor:

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

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Electronic Principles
Which one of the following statements is true for the voltages in a series RC circuit?

The total voltage is less than the sum of the voltages across the resistance and capacitance
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is equal to the sum of the voltages across the resistance and capacitance
The total voltage is greater than the sum of the voltages across the resistance and capacitance
None of these

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Electronic Principles
The dielectric constant of a material is a measure of:

None of these
how well the material concentrates electrostatic lines of force
how well the material concentrates magnetic lines of force
the amount of voltage it can withstand before breaking down
the amount of opposition to the current flow

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