Final answer:
The expression for sending end voltage and current in terms of receiving end voltage and current of a transmission line can be derived using the power equation.
Step-by-step explanation:
The expression for the sending end voltage and current in terms of the receiving end voltage and current of a transmission line can be derived using the power equation.
Let Vs and Is be the sending end voltage and current, and Vr and Ir be the receiving end voltage and current, respectively.
Using the power equation P = IV, we can write:
P = Vs * Is = Vr * Ir
Therefore, the expression for the sending end voltage and current is:
Vs = (Vr * Ir) / Is
Is = (Vr * Ir) / Vs