List of top Power Systems Questions on Gauss- Seidel and Newton-Raphson load flow methods asked in GATE EE

Consider a power system with \(N\) buses, of which \(P\) are generator buses and the remaining \(Q\) are load buses (where there is no generation).

Assume that there are no reactive power-limit violations at the generator buses.

What is the size of the Jacobian matrix in the Newton-Raphson load flow method?

The dimension of the sub-matrix $M$ in the Newton-Raphson Jacobian is \(\underline{\hspace{2cm}}\).