Exam 16: Alternating Voltage and Current

The peak value is the maximum value of a sine wave.

When two waveforms are exactly out of phase, what is the difference in degrees?

What symbol is used to represent the ratio of the circumference to the diameter for any circle?

The basic function of an oscilloscope is to view dc waveforms.

Rules and regulations for residential wiring are usually based on which of the following?

One complete revolution of an ac waveform is a(n)

What type waveform is common in digital electronic circuitry?

In an alternator with three generator windings equally spaced around the circle, the windings produce output voltages at

When a sine wave of alternating voltage is connected across a load resistance, the current that flows in the circuit is a cosine wave.

Which of the following is not a nonsinusoidal waveform?

When the amplitude of a sine wave is measured with an ac voltmeter, the value displayed by the meter will be the average value.

The numerical value of $\pi$ is 1.314.

Exact multiples of the fundamental frequency are called ______________ frequencies.

The number of cycles per second is the frequency measured in

Sound waves above the audible range of frequencies are called ultrasonic waves.

The dc value of a waveform is its average value over one complete cycle.

What electronic circuits produce sine-wave variations naturally?

A quantity that has magnitude and direction is a(n)

Current variations are in phase with the applied voltage in an ac circuit with

The rms value of a sine wave is equal to 0.707 times peak value.