c. waveform
.Basic electrotechnical
units and theory
Ch 4
79
V
V
U
U W
W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
Unit Principles electrotechnology Outcome 1
Underpinning knowledge: when you have completed this chapter you should able to:
● identify units and their symbols for various quantities such current, voltage, resistance, force, mass,
power and energy
● state the relationship between resistance, length and area
● state the relationship between force, mass, weight and turning force (Basic Mechanics)
● state the efficiency machine
● state the constructional features and principles simple alternator
● state the maximum rms and average value a
