Electronic Principles
The period of a waveform is:

the time required to complete one full cycle
the number of cycles completed in one second
equal to 0.707 times the peak amplitude
None of these
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 is a statement of KirchhofFs voltage law?

The total voltage in a parallel circuit is less than the value of the smallest voltage
None of these
The algebraic sum of voltages in a loop is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
The algebraic sum of voltages entering and leaving a point is equal to zero

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Electronic Principles
The total capacitive reactance of a parallel capacitor circuit is:

less than the capacitance value of the smallest capacitor
None of these
equal to the sum of the individual capacitance values
equal to the source voltage divided by total current
equal to the sum of the individual capacitive-reactance values

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage remains at one polarity but changes value periodically
The voltage remains at one polarity and at a steady level
The voltage causes current to flow in two directions at the same time
None of these
The voltage reverses polarity periodically

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