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Which type of motor is not used in axis or spindle drives of CNC machine tools?

  • A.Induction motor
  • B.DC servo motor
  • C.Stepper motor 
  • D.Linear servo motor

Answer: C

A spindle motor is a small, high precision, high reliability electric motor that is used to rotate the shaft or spindle used in machine tools for performing a wide range of tasks like drilling, grinding, milling etc. A stepper motor has not all these characteristic due to change of direction of rotation with time interval.

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