Respuesta :
The true statements are:
Major part of a DC motor are station, commutator and brushes.
if the rotor of a dc motor consists of just one conductor loop, the output torque will vary in magnitude from zero to two maximum and back to zero every half turn of the rotor.
Using multiple loops in the rotor of a dc motor not only gives higher torque but also ensures a constant magnitude of the output torque.
In a series motor, rotor and station are connected in series.
In a shunt motor, a bypass circuit is provided to prevent overload.
What is DC Motor ?
Any of a group of rotating electric motors that use direct current (DC) electricity to create mechanical energy is referred to as a DC motor. The most prevalent kinds depend on the forces created by induced magnetic fields brought on by current flowing through the coil. For a portion of the motor's current to occasionally shift direction, almost all types of DC motors contain an internal mechanism that is either electromechanical or electronic.
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