Exam 11: Alternating Current

A ____________________ is used to change alternating current into direct current.

The skin effect is proportional to the ____. As the ____ increases, the skin effect increases.

The most common frequency used in electrical generation in the United States and Canada is ____ hertz.

____________________ loads are loads that produce heat and have the current and the voltage in phase with each other.

____ cable is less affected by the skin effect.

Thomas Edison's main competitor, Nikola Tesla, believed that _________________________ was impractical for large-scale electrical transmission applications.

A ____ wave is one in which the voltage rises at a constant rate with respect to time.

A ____________________ wave reaches its peak positive voltage at 90 degrees, its maximum negative voltage at 270 degrees, and has a total of 360 electrical degrees.

The AC voltage that will produce the same amount of power as a like value of DC voltage is called the ____ value.

The _________________________ occurs when alternating current induces eddy currents into a conductor, which causes the electrons to be repelled toward the outer surface of the conductor.

RMS stands for ______________________________, which is an abbreviation for the square root of the mean of the square of the instantaneous currents.

Square waves are generally produced by electronic devices called ____.

In DC circuits, there is only one basic type of load, which is ____.

The average voltage is ____ the peak, or maximum, value of the wave form and to the length of time it is on as compared to the length of time it is off.

Peak-to-peak, peak, RMS, and average are measurements of ____ associated with sine waves.