A dc motor coupled to a large grinder develops 120 hp at aconstant speed of 700 r/min. The moment of inertia of therevolving parts is 2500 lbft2. a. Calculate the torque [Nm] developedby the motor. b. Calculate the motor torque [Nm]needed so that the speed will increase to 750 r/min in 5 sec. (Note: The torque exerted by the grinder remains thesame.)

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Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.