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A variable speed d.c. drive has rated power of 5 kW, rated speed of 1550 rpm drives a load that comprises a constant load of

  • A variable speed d.c. drive has rated power of 5 kW, rated speed of 1550 rpm drives a load that comprises a constant load of TL = 30 Nm. The inertia of the drive system is 0.10 kg.m2. Calculate the time taken to accelerate the load from zero to 800 rpm, assuming the drive develops rated torque during the acceleration phase.

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