The per unit values of the line reactances p, q and r shown in the figure are

There is a transmission line, connected between buses 1 and 3, which is represented by the
circuit shown in figure.

If this transmission line is removed from service, What is the modified bus admittance matrix?

Let a causal LTI system be characterized by the following differential equation, with initial rest condition

Where x(t) and y(t) are the input and output respectively. The impulse response of the system is (u(t) is the unit step function)

The Fourier series representation of the output is given as