Criado por That Yeti Dog Person
aproximadamente 3 anos atrás
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_______ means the AC current begins as a positive cycle then reverses to a negative cycle 60 per second.
_____ and AC _____ are machines that produce or generate AC voltage. (the larger the machine is the more efficient it is)
AC power can be produced and transmitted at a lower ____ than DC power. It's also more conveniently distributed.
Very high voltage is desirable in a transmission line because it makes it possible to reduce ______ in that line.
Power loss due to the heating of conductors can be determined by using this formula _____.
__, __, and __ are the most common VACs in houses etc.
In an _____, a group of conductors revolve in a magnetic field. Because of the constantly changing position of the conductor's relative lines of force, the induced voltage is constantly changing, or "alternating", and the current output is AC current.
The value of AC current at any instant is its _______ value. These values of any AC current change in direction and magnitude at regular intervals.
The wavy line, or curve, that connects all points reached by the V or current during a given point in time is the ______.
(aka a graph showing the changes in AC voltage or current.)
AC current starts (as an example) from 0 rises to a max., decreases back to 0, reverses, reaches a max. in the opposite direction, and starts over. This is called one ____.
One ___ equals one complete AC cycle consisting of a positive and negative alternation.
One half of a cycle (the of current or V from one 0 point to the next) is called an ____.
There are ___ alternations in one cycle.
The highest value a current of V may reach in one cycle is the ____ value, or ____ value, of the cycle.
_____ is the number of cycles completed in one second.
Frequency is measured in ____.
___ hertz is the most common frequency used in the US.