For a vertically mounted hydraulic actuator with an overrunning load, what is the major disadvantage of using a counter balance valve to prevent a weight from falling uncontrollably and how can it be overcome?

For a vertically mounted hydraulic actuator with an overrunning load, what is the major disadvantage of using a counter balance valve to prevent a weight from falling uncontrollably and how can it be overcome?

Electrical Transformers and Rotating Machines

4th Edition

ISBN:9781305494817

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Motor Maintenance And Troubleshooting

Section: Chapter Questions

Problem 3RQ: What are the effects of improper brush tension in a DC machine?

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A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

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