a) Connecting several generators of different ratings gives a linear equivalent droop characteristic consisting of short segments with increasingly steeper slopes.**
When multiple generators with different ratings are connected in parallel, the resulting droop characteristic is typically a piecewise linear curve. Each segment of the curve corresponds to the droop characteristic of one of the generators, and as load increases, the generators with smaller ratings reach their limits first, causing the overall droop characteristic to become steeper. This results in a linear equivalent droop characteristic made up of short segments with progressively steeper slopes.