In a system low friction co-efficient facilitates___________?
Correct answer: A. reduced velocity lag error
- A. reduced velocity lag error
- B. increased velocity lag error
- C. increased speed of response
- D. reduced time constant of the system
Explanation
For a typical position servo, the velocity error is proportional to the friction coefficient and inversely related to loop gain, so reducing friction reduces velocity lag error. Reduced friction also reduces damping and does not necessarily reduce the time constant.
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