Year 2 A4 Flashcards
1
Q
Scalar
A
a quantity that has magnitude only
2
Q
Vector
A
a quantity that has magnitude and direction
3
Q
Phasor
A
a vector used to represent electrical quantities, such as volts and amperes
4
Q
Describe: impedance
A
an AC circuit contains resistance and reactance
impedance can be found using Pythagorean theorem.
5
Q
Describe: Apparent Power VA
A
An AC cct contains true power (Watts) and reactive power (VARs). VA can be found using the Pythagorean theorem
6
Q
Vectors in phase
A
can be added arithmetically
7
Q
Vectors 180 degrees out of phase
A
act against each other can be added arithmetically
8
Q
Vectors out of phase have to be
A
added using triangles
