horseshoe magnet
c.
21. List five practical applications for transformer for example, shaver
socket. Sketch simple circuit two resistors connected parallel across a
battery and explain how the current flows this circuit. Sketch the construction simple transformer and label the primary
and secondary windings. 230V
b. 400V
c. Why the metal core the transformer
laminated? How cool big power transformer?
28.
25. supply. Sketch simple circuit show how voltmeter and ammeter would be
connected into the circuit measure total voltage and total current. Describe, with the aid simple diagram, how the atoms and
electrons behave material said good insulator.c. around simple bar magnet
b.
30.
27. Describe with the aid simple diagram how the atoms and electrons
behave material said good conductor electricity. 25kV
d. supply for the National Grid
rather than d.
22.
23. List five materials which are used good insulators the
electrotechnical industry. explain the action and state one application for solenoid.
24.c. 132kV.121
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
18. Sketch simple circuit two resistors connected series across a
battery and explain how the current flows this circuit. Describe the advantage using a. List five materials which are used good conductors the
electrotechnical industry.
. Electricity distributed the National Grid at:
a.
20.
29. Describe the three effects electric current.
19.
26. Sketch the magnetic flux patterns:
a
