Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

None of these
89.3 ohm
224 ohm
77.7 ohm
88.8 ohm

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Electronic Principles
The period of a waveform is:

the time required to complete one full cycle
equal to 0.707 times the peak amplitude
None of these
the number of cycles completed in one second
the time required for the voltage to rise from 10% to 90% of the peak amplitude

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Electronic Principles
Which one of the following statements applies to common, non-rechargeable flashlight batteries?

None of these
Common flashlight batteries are primary dry-cell batteries
Common flashlight batteries are secondary wet-cell batteries
Common flashlight batteries are primary wet-cell batteries
Common flashlight batteries are secondary dry-cell batteries

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Electronic Principles
For a pure capacitor:

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

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