Page 29 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

Tabular column:

SERIES CONNECTION:
Sl. No. of Total Applied Current Voltage drop across the Total Voltage
No Lamps or Resistance Voltage (I) lamps(V’) drop V-V’
resistors (R) (V) V 1 V 2 V 3 V 4 V 5 V 6

1 3 230 -- -- --
2 6 230
Total Resistance (R) = R +R +R +……..R 6
2
1
3
Total voltage (V) = Ir +Ir +Ir +........Ir OR Total voltage (V) = v + v + v …..v 6
6
2
3
1
3
1
2
PARALLEL CONNECTION:
Sl. No. of Total Applied Current Current average lamps(i) Sum of
No Lamps or Resistance Voltage (I) Current
resistors (R) (V) i i i i i i (I +I +….I )
1 2 3 4 5 6 1 2 6
1 3 230 -- -- --
2 6 230
1 1 1 1
Total Resistance
R r 1 r 2 r 3
Total current (I) = i + i + i .....i
1 2 3 6
Safety precautions
• Do not make wrong and loose connections.

• Select correct / proper range in meters.
• Switch OFF the supply before disconnecting the circuit.
Series connection

Parallel connection

12

CITS : Power - Electrician & Wireman - Exercise 6