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The best transmission length for effective transmission of power is

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in Electromagnetic Theory by (188k points)
The best transmission length for effective transmission of power is

(a) L = λ/4

(b) L = λ/8

(c) L = λ/2

(d) L = ∞

This question was addressed to me by my school principal while I was bunking the class.

This intriguing question comes from Transmission Line Equations in portion Transmission Lines of Electromagnetic Theory

1 Answer

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Best answer
Correct option is (b) L = λ/8

Best explanation: Maximum transmission of power will occur, when the transmission line is matched. This implies that the input and characteristic impedances are the same. This condition is possible for l = λ/8 and l = ∞. Since l = ∞ is not feasible, the best option is l = λ/8.

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