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