supply because easy change the voltage levels using a
transformer.c.c. circuit
before going consider the practical circuits resistance, inductance
and capacitance acting together.c.
Rotating simple loop wire coils wire between the poles mag-
net such that shown simplified Fig.
In this section will first all consider the theoretical circuits pure
resistance, inductance and capacitance acting alone a. supply generated Power Station exactly the same Fig.1
Simple a. large Power Stations and distributed around
the United Kingdom the National Grid the end user.c. supply, alternating current supply. voltage the loop coils wire as
shown the display cathode ray oscilloscope. generator alternator. 10.1 will cut the north south lines
of magnetic flux and induce a.
Key Fact
Definitions
● Try remember these a.c.c. circuit
definitions
● Write them down helps. Let first define some our terms of
reference.Baisc Electrical Installation Work
194
Alternating current theory
Commercial quantities electricity for industry, commerce and domes-
tic use are generated a. The d.c. elec-
tricity has many applications where portability emergency stand-by
supply important but for large quantities power has an
a. 10.1
except that powerful electromagnets are used and the power for rotation
comes from steam turbine.c.
. The basic principle of
the a.
This a.c.
Cathode
ray
oscilloscope
Rotation
N
S
Carbon brushes
Slip rings
FIGURE 10
