Transcription of Transmission Lines - GATEstudy.com
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Transmission Lines - GATEstudy.com
Transmission Lines 1. A load impedance, (200 + j0) is to be matched to a 50 lossless Transmission line by using a quarter wave line transformer (QWT). The characteristic impedance of the QWT required is _____ [GATE 1994: 1 Mark] Soln. For Quarter wave line transformer = . = = 2. A lossless Transmission line having 50 characteristic impedance and length 4 is short circuited at one end and connected to an ideal voltage source of 1V at the other end. The current drawn from the voltage sources is (a) 0 (b) A (c) (d) None of the these [GATE 1996: 1 Mark] Soln. For quarter wave transformer ( 4 ) = = (short circuit) = = (open circuit) The current drawn from the voltage source = = = Option (a) 3.
Soln. For quarter wave transformer ( ⁄4) = = (short circuit) = =∞ (open circuit) The current drawn from the voltage source = = ∞ = Option (a) 3. The capacitance per unit length and the characteristic impedance of a lossless transmission line are C and Z 0 respectively. The velocity of a travelling wave on the transmission line is
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