Electronics - Transformers - Discussion

1. 

When does maximum power transfer happen from the source to the load?

[A]. When the source resistance is greater than the load resistance
[B]. When the source resistance is less than the load resistance
[C]. When there is negligible source resistance
[D]. When the source resistance equals the load resistance

Answer: Option D

Explanation:

No answer description available for this question.

Lambert Yubin said: (Feb 1, 2011)  
I know that it occurs when the magnetic losses equal the copper losses. How does that relate to D?

Mahindra Bhosale said: (Jul 9, 2011)  
The maximum power transfer theorem states that when equalent source resistance is equal to load resistance the maximum power is being transfer.

Ranbir Samanta said: (Aug 19, 2011)  
The maximum power transfer theorem states that when equivalent source resistance is equal to load resistance the maximum power is being transfer.

It occurs when the magnetic losses equal the copper losses.

Shamraay said: (Sep 15, 2011)  
The maximum power transfer theorem state that when internal resistance of circuit is equal to load resistance of the circuit.

Ri = Rl.

Satish said: (Sep 23, 2011)  
According to MAX POWER TRANSFER THEOREM max power to be transfered only when sourse resistance = load resistance

Asit Kumar Rout said: (Sep 28, 2011)  
When the source resistance (RS) is equal to load resistance (RL) then the max power transfer from source to load.

Honey said: (Dec 19, 2011)  
When the internal resistance is equal to the load resistance then the maximum power will generate according to maximum power transfer theorem.

Srikkaanth. S said: (Dec 27, 2011)  
Answer is D. When source resistance is equal to load resistance. Proof refer Maximum power transfer theorem in Electrical Circuits.

Tapash! said: (Jan 27, 2012)  
Yes, correct according to max. Transfer theorem, source resistence should be equal to load resistor.

Vijay Kumar said: (May 25, 2012)  
We know that transformer is used to transfer power from one circuit to another and also for impedance matching, it happens when "source resistance is equal to load resistance".

Mishra Pankaj P said: (Dec 27, 2012)  
When the internal resistance is equal to the load resistance then the maximum power will generate according to maximum power transfer theorem.

Gopikkannan K T said: (May 26, 2013)  
P = VI V = IR V is constant that is directly proportional to P.

I and R inversely proportion then power drop at Rs=Rl is high.

Abdul said: (Jan 21, 2016)  
When the resistance is common for the entire circuit from source to load then power at the source will be equal to power at the load.

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