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In a small flat, there are 5 light points and 2 fan points. How many sub-circuits are required for the flat?


1. 4
2. 2
3. 3
4. 1

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Correct Answer - Option 4 : 1

Sub-Circuit: It is the part of the circuit that is connected directly from the source so that the following advantages we obtained.

  • When there is a fault in one sub-circuit, that part of the sub-circuit is isolated, and the remaining part of the load gets supply. 
  • Less voltage drop due to the sub-circuit.
     

As per Indian standards, the maximum load that can be connected in a light-fan sub-circuit is 800 W

  • It can also be expressed in terms of the maximum number of points that can be accommodated in the sub-circuit. It is a maximum of 10 points.
    • Either 10 light or 
    • 10 fan or
    • 5 light and 5 fan points.

Explanation:

Given, 5 light points and 2 fan points, so we required only 1 Sub-Circuit in the flat.

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