Exam 3 Review.docx - Name(Third Exam Review 1 Water is being pumped up to a water tower 30 m above the horizontal pipe that is supplying the water at a

Exam 3 Review.docx - Name(Third Exam Review 1 Water is...

This preview shows page 1 - 3 out of 6 pages.

Name: (Third Exam Review) 10/21/2019 1. Water is being pumped up to a water tower 30 m above the horizontal pipe that is supplying the water at a rate of 50 kg/s. Assuming the pressure is the same in the supplying pipe and the water tower, what is the wattage of the pump needed to fill up the water tower if the pump is 40 percent efficient. 2. A hydraulic turbine has 50 m of head available at a flow rate of 1.3 m 3 /s, and its overall turbine-generator efficiency is 78 percent. Determine the electric power output of this turbine. 3. Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 23 kW of useful mechanical power to the water. The free surface of the upper reservoir is 57 m higher than the surface of the lower reservoir. If the flow rate of water is measured to be 0.03 m 3 /s, determine the irreversible head loss of the system and the lost mechanical power during this process. 1
Image of page 1
Name: (Third Exam Review) 10/21/2019 4. In a hydroelectric power plant, water enters the turbine nozzles at 800 kPa absolute with a low velocity. If the nozzle outlets are exposed to atmospheric pressure of 100 kPa, determine the maximum velocity to which water can be accelerated by the nozzles before striking the turbine blades.
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 6 pages?

  • Fall '09
  • DENG

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes