Answer Posted / sunil parmar,nirma uni.

BRUSHLESS DC MOTOR IS THE RIGHT ANSWER

THERE ARE LARGE STEP ANGLE REQUIRED IN CPU AS PER SPEED
REQUIREMET AND IT DEPENDS ON HEATING OF DIODES IN THE
CIRCUIT OF CPU......
SO, THE STEPPER MOTOR IS USED ONLY WHERE SMALL STEP ANGLES
ARE REQUIRED....

BRUSHLESS DC MOTOR HAS LESS LOSS,LOW POWER CONSUMPTION AND
HIGH PERFORMANCE THAN STEPPER MOTOR

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