Alternating Current Flashcards
1
Q
What are the advantages of AC
(4 advantages)
A
Goes in both directions
Easily to convert one value to another
Power transmission is more efficient
2
Q
Definition of RMS voltage
A
The value of AC when compared to DC, produces the same heating effect
3
Q
How is AC generated?
A
When a wire/current cuts through lines of flux, a voltage is induced.
4
Q
What is periodic time?
A
Time taken for 1 cycle
5
Q
Describe Inductive Reactance
A
The opposition to current flow in a AC circuit
Produced by inductors and capacitors
6
Q
what are the units of reactance?
A
Ohms
7
Q
units of inductance?
A
Henry’s
8
Q
what happens to reactance if frequency increases?
A
Reactance increases
9
Q
A
