For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.

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DC Motors topics include: Characteristics of dc motors and speed control of dc motors, pmdc and dc motor starting.

A Direct Current (DC) motor is a motor that turns energy from a direct current and turns this into mechanical energy. There are 3 main types of DC motors are: Series, Shunt and Compound. These terms relate to the type of connection of the field windings with respect to the armature circuit.

Related Test: Electrical Machines Practice Test: DC Machines


For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.






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