A river (with velocity 3 m/s) is flowing towards a big lake witha volume flow rate of 600 m³/s at a location 100 m above thelake surface. A hydraulic turbine-generator is installed.(1) What is the change of mechanical energy rate [4Ė mechwhen the water is flowing from the elevated location towards thelake? We take the density of water to be p= 1000 kg/m³.(2) A hydraulic turbine-generator shown in the figure isinstalled. The overall efficiency of the turbine-generator is 85percent. What is the electric power output of the entire river?River3 m/sGeneratorTurbine100 m

Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Answered: A river (with velocity 3 m/s) is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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(a) Water flows by gravity from one lake to another as illus- trated; the surface levels of the lakes differ by an eleva- tion of h= 50 ft. If the volumetric flow rate is steady at Q = 80 gallons per minute, what is the associated loss of available energy? (b) A pump is to be installed to pump the water from the lower lake to the upper lake with the same flow rate as above (Q = 80 gpm). If the amount of energy loss is assumed to be the same as in part (a), how much mechanical power must be supplied by the pump? Answer: (a) loss = 1600 ft-lb/slug, (b) Wpump = 2.0 hp
= 0.547 59.6 Scanned by CamScanner 938 Power Plant Engineering 16 km. The efficiencies of turbine and generator are 93% each. The density os water is 1025 kg/m³. Calculate (a) the quantity of water flowing through c turbine at maximum output in m/s, (b) the surface area of reservoir in km², (c) the wash behind the embankment at full reservoir capacity, (d) energy produced in TWh per year. (1 TWh (tera-watt hour) = 10° GWh= 10° MWh= 10° kWh=10'² Wh=3.6× 10!5 , %3D %3D %3D
Hydraulic Machines
B: The pump in Fig. Q3B increases the pressure in the water from 200 to 4000 kPa with a flow rate of 0.1 m³/s? The electric power of motor 275 kW. Determine the mechanical efficiency of the pump and overall efficiency pump/motor unit when the motor efficiency is 90 percent. Fig. Q3B 50 mm Pump 100 mm Water Motor
B-A pump has the following parameters N=2133.5 RPM, Ns = 40 RPM, D= 37.1 cm and is used to pump water up to 90 m(H) at maximum efficiency operation: write the answer only (a) At what speed should the pump be operated to pump water up to (76 m)? (b) What is the discharge in each case? (c) What is pumping power needed in each case? (d) What is consumed electrical power in each case if max = 90%? e- A pump discharges liquid at the rate of Q against a head of H. If specific weight of the liquid is w, find the expression for the pumping power.
answer first item only
answer 2nd item only
Aa hydraulic turbine receive water from a reservoir at elevated of 50 m above it. What is the minimum water flow in kg per second to produce a turbine output of 30 mw?
In a detergent making process, 25 m3/h of water flows through a 5 cm diameter pipe system asfollows:Point 1, the suction side of the pump, is at a pressure of 175 kPa. After exiting from the pump,the water runs through a 2 m horizontal length of pipe, a fully-open gate valve, another 2 mhorizontal run, a 90º bend, 0.5 m vertical rise, 90º bend, 4 m horizontal run, 90º bend, 1.5 m verticalrise, 90º bend, 2 m horizontal run, half-open globe valve, 6 m horizontal run, 90º bend, 4 m verticalrise, 90º bend, 4.5 m horizontal run, 90º bend, 4 m vertical rise, 90º bend, 9 m horizontal run, fully-open gate valve, 1 m horizontal run then, finally, entry into a tank containing 10 m of liquid. Point2 is the liquid surface in the tank, which is open to atmosphere. (a) If the center-line of the pump and the bottom of the tank are both at grade level, estimate thehead that the pump must deliver. Take the density and viscosity of water as 1000 kg/m3 and 10-3Pa·s, respectively. (b) What is the pump…
The Water is flowing through a pipe having diameter 350 mm and 210 mm at the bottom and upper end respectively. The intensity of pressure at the bottom end is 25.85 N/cm? and pressure at the upper end is 11.6325 N/cm? & the rate of flow through the pipe is 40 lit/s. Draw a neat diagram and determine the following: 1.Velocity head at bottom of the pipe in m/s. 2. Velocity head at top of the pipe in m/s. 3. The difference in datum head between top & bottom in meter of water - 4. The difference of pressure head between bottom to top end in meter of water.- The velocity of flow of water at the bottom in m/s.
This is unit analysis. Explain and Plot the whole process why the head(h) arrive in meter(m) unit and why the pump work(Pw) arrived in kilowatts(KW) unit. Thanks!

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