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Question: 1 a hydraulic motor provides torque to a load through...

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1. A hydraulic motor provides torque to a load through a shaft turning at 838 rev/min. The motor has 25 gal/min of fluid going through it, and the pressure at the motor inlet is 2264 psi. What torque (in ft-lb) is the motor providing? (Assume 100 % efficiency).

2. If all the imported petroleum came into the US in one 27 ft inside diameter (ID) pipe, what would be the fluid velocity (in ft/s) in the pipe with the current import flow rate of 361,000 gal/min?

3. A submarine that is submerged at a depth of 1000 ft has a hydrostatic force acting on its hull with a force of 4264295 N per one square m of hull surface area. What is the pressure in psi?

4. A hydraulic jack has a 0.25 in. diameter input piston and a 1.03 in. diameter output piston. What input force (in lbs) on the small piston is requred to produce an output force of 3902 lbs?

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