M3.13 Flashcards
1
Q
What are the main two characteristics that AC differs from DC
A
- the amount of voltage changes due to time
- its direction (polarity) changes regularly
2
Q
What is voltage peak to peak?
A
It is the peak to peak on a sine wave
3
Q
What is cycle time?
A
One cycle time is a full cycle in a sine wave
4
Q
What is know as frequency?
A
The number of sine waves per second (unit is hertz)
5
Q
What is the amplitude of a sine wave?
A
It is 0 to a peak
6
Q
What is the root mean square (RMS) used for?
A
It is used for comparison from AC to DC
7
Q
What angle are the three coils displaced in a three phase generator?
A
120 degreees
8
Q
What is the main advantage of a three phase generator?
A
It has continuous power output which causes less strain to the bearings
