(Solved): please read part B of the question very carefully An engine running at 250pm drives a line shaft by ...

An engine running at $$250\mathrm{pm}$$ drives a line shaft by means of a belt. The engine pulley is $$650\mathrm{mm}$$ diameter and the pulley on the line shaft is $$350\mathrm{mm}$$. An $$800\mathrm{mm}$$ diameter pulley on the line shaft drives a $$200\mathrm{mm}$$ dianeter pulley keyed to a dynamo shaft. Find the speed of dynamo shaft, when a) there is no slip, and b) there is a slip of $$4\%$$ at drives 3 and 4 only (no slip on drives 1 and 2 ).