Project ForgeManufacturing Engineering
Machining Processes
GATE 2007
Easy
Which type of motor is NOT used in axis or spindle drives of CNC machine tools?
- induction motor
- Bdc servo motor
- Cstepper motor
- Dlinear servo motor
Explanation
CNC axis/spindle drives traditionally use motors capable of precise variable-speed/position servo control — DC servo, stepper, and linear servo motors — whereas plain induction motors (constant-speed, no inherent precise positioning capability) are not used for this role.
Source: GATE ME 2007 (2007)
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