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

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

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Electronic Principles
One henry of inductance is defined as:

the amount of inductance required to change the frequency of a current by 1 Hz
None of these
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
the amount of counter emf required to reduce a current to 1 A

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak both the voltage and current waveforms
round off both the voltage and current waveforms
peak the voltage and round off the current waveforms
peak the current and round off the voltage waveforms
None of these

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