Monitoring And Measuring A.C. Flashcards
1
Q
d.c. definition
A
A direct current supply has one size and one direction
2
Q
a.c. Definition
A
Alternating current supply is a current which changes direction and instantaneous value with time.
3
Q
What is the true voltage of an a.c. supply?
A
V r.m.s.
4
Q
What is the Vr.m.s. of a mains supply?
A
230 V
5
Q
When doing calculations concerning a.c. supplies of what must you remember to do?
A
Use the r.m.s. Values
