Maximum power transfer occurs when the load voltage and current are: 

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MPPGCL JE Electrical 19 March 2019 Shift 2 Official Paper
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  1. 1/3rd of their maximum possible values
  2. 1/4th of their maximum possible values
  3. 1/8th of their maximum possible values
  4. 1/2 of their maximum possible values

Answer (Detailed Solution Below)

Option 4 : 1/2 of their maximum possible values
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MPPGCL JE Electrical Full Test 1
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Detailed Solution

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Maximum Power Transfer Theorem

The maximum power transfer theorem states that the maximum power is delivered to a load when the load resistance is equal to the source resistance.

The maximum power across the load is given by:

 

Calculation

When maximum power flows from source to load, the voltage across the load is half of the Thevenin voltage.

Consider Thevenin voltage = Vth

The voltage across the load, 

The current drawn from the source is given by:

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