Maximum efficiency, Mechanical Engineering

Assignment Help:

A jet strikes tangentially a smooth curved vane moving in the similar direction as the jet, and the jet gets reversed in the direction. Prove that the maximum efficiency is slightly less than 60 percent. 4. The following data relate to a Pelton wheel:

Head = 72 m, speed of wheel = 240 r.p.m., shaft power of the wheel = 115 kW, speed , coefficient of velocity = 0.98, ratio = 0.45, overall efficiency = 85%, Design the Pelton wheel.


Related Discussions:- Maximum efficiency

Temperature scales - thermodynamics, Temperatur e Scales: The tempera...

Temperatur e Scales: The temperature of a system can be determined by bringing a 2 nd body, a thermometer, into contact with the system and allowing thermal equilibrium to b

Steam systems - air-conditioning guidelines, Ensure all low points on steam...

Ensure all low points on steam mains and equipment have drip trap assembly. High pressure condensate to be taken to flash tanks, provide detail of flash tank. Use minimum 24" (610

Find out the acceleration of the mass centre, Find out the Acceleration of ...

Find out the Acceleration of the mass centre: A wheel of mass 200 kg and a diameter of 700 mm rolls without slipping down a plane inclined at an angle of 20 o with the horizo

Refractory, extraction of refractories

extraction of refractories

Factors in the design of high temperature materials, Q. Factors in the desi...

Q. Factors in the design of high temperature materials? There is typically little correlation between room temperature strength and high temperature strength of creep-resistant

Compound shaft, Compoun d shaft: compoun d shaft? How is compound ...

Compoun d shaft: compoun d shaft? How is compound shaft classified?                                                               Sol.: Shaft made up of 2 or more mat

Wall thickness tank, What must be thickness of Wall tank: ASTM 285 C, const...

What must be thickness of Wall tank: ASTM 285 C, construction material. 15.75 ft diameter 18.0 ft length Wall length down cone =10.4 ft length top cone = 8.3 ft Operation pressur

Firecracker welding, Firecracker Welding This is a semi automatic vers...

Firecracker Welding This is a semi automatic version of SMAW. A specially designed heavy - coated electrode, which can be of any length upto 2 m, is laid on the seam of a groo

Mechanics of solids, What is Principle of superposition (Uniform cross-sect...

What is Principle of superposition (Uniform cross-section s/t multiple loads)

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd