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The given figure shows the output torque plotted against crank positions for a single cylinder four – stroke – cycle engine. The areas lying above the zero – torque line represent positive work and the areas below represent negative work. The engine drives a machine which offers a resisting torque magnitudes of the hatched areas are given by number in the areas) as shown:                                                                    

During the cycle, the minimum speed occurs in                               

(a) A          (b) D         (c) C        (d) F

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