What is the condition for maximum power transfer theorem in DC circuits?(a) RL=2Rth(b) RL≠Rth(c) RL≫Rth(d) RL=RthThis question was posed to me during an interview.My doubt is from Regenerative Braking of DC Series Motors topic in section Braking of DC Motors & Induction Motors of Electric Drives

What is the condition for maximum power transfer theorem in DC circuit

1.	What is the condition for maximum power transfer theorem in DC circuits?(a) RL=2Rth(b) RL≠Rth(c) RL≫Rth(d) RL=RthThis question was posed to me during an interview.My doubt is from Regenerative Braking of DC Series Motors topic in section Braking of DC Motors & Induction Motors of Electric Drives
Answer» Right CHOICE is (d) RL=Rth Best EXPLANATION: The condition for maximum power transfer theorem is load should be variable and RL=Rth. During maximum power transfer condition VOLTAGE across load becomes half of THEVENIN voltage and efficiency becomes 50 %.

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