Question

Consider a step voltage wave of magnitude 1 pu travelling along a lossless transmission line that terminates in a capacitor. The voltage magnitude across the capacitor at the instant travelling wave reaches the capacitor is

• A. 0
• B. +1
• C. -1
• D. +2

Answer 1

The correct option is A 0


Surge impedance of capacitor$Z_{cp}=\sqrt{\frac{L}{C}}=\sqrt{\frac{0}{C}}=0\to shortcircuited$

Refracted voltage $V_2=0$ for a short circuit.