21 - Alternating current Flashcards
1
Q
Define alternating current
A
a current which periodically varies from positive and negative and changes its magnitude continuously with time
2
Q
Define r.m.s value of an alternating current
A
The value of a constant current that produces the same power in a resistor as the alternating current
3
Q
Define r.m.s value of an alternating voltage
A
The value of a constant voltage that produces the same power in a resistor as the alternating voltage
4
Q
Define rectification
A
The process of converting alternating current and voltage into direct current and voltage
5
Q
Define smoothing
A
The reduction in the variation of the output voltage or current
