I need the answer as soon as possible A turbine has a supply line of diameter 40 cmand a tapering draft tube as shown in Fig.4.21. When the flow in the pipe is 0.5 m/s thepressure head at point A upstream of theturbine is 30 m and at point B in the draft tube,where the diameter is 60 cm, the pressurehead is (-4 m). Point B is 2.0 m below point A.Estimate the power output of the turbine byassuming 90% efficiency.40 cm DiaA-Turbine2.0 m60 cm DiaFig. 4.21

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Answered: A turbine has a supply line of diameter…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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In Fig. there are 125 ft of 2-in pipe, 75 ft of 6-inpipe, and 150 ft of 3-in pipe, all cast iron. There are three90° elbows and an open globe valve, all flanged. If the exitelevation is zero, what horsepower is extracted by the turbinewhen the flow rate is 0.16 ft3/s of water at 20°C?
Water flows upward in a vertical 300-mm pipe at the rate of 0.222 m /s. At point A in the pipe, the pressure is 210 kPa. At B, 4.57 m above A, the diameter is 600 mm, and the lost head A to B equals 1.83 m. Determine the pressure at B.
Water at a guage pressure of 4 kPa flows at a rate of 250 l/s in a 135° pipe bend of diameter 300 mm, find in MN the magnitude and direction of the resultant force on the bend.
Pipe A, 30 cm in diameter, branches into two pipes B and C. Pipe B is 15 cm in diameter and pipe C is 7.5 cm in diameter. If the flow in A is divided as follows 2/3 goes to B and 1/3 goes into C, what is the discahrge in pipe A, if the velocity must not exceed 3 m/s in any of the pipes?
1. A Pelton wheel of 4 m diameter operates with a head of 1000 m. Estimate the flow rate and power output of the machine, assuming that it operates at peak efficiency and there are no losses in the flow upstream of the turbine. 2. A Pelton wheel operates with a head of 400 m at 350 rpm, and it is powered by a jet 12 cm in diameter. Find the specific speed (U.S. customary units), and the wheel diameter, if there are no losses in the flow upstream of the turbine and it operates at peak efficiency.
A centrifugal pump having a head-capacityrelationship given by the equation ha=180 –6.10 X 10-4 Q2, with ha in feet when Q is ingpm, is to be used with the system shownin the figure, For Z2-Z1= 50 ft, what is theexpected flowrate if the total length ofconstant diameter pipe is 600 ft and thefluid is water? Assume the pipe diameter tobe 4 inch and the friction factor to be equalto 0.02. Neglect all minor losses.
The plunger diameter of a single acting reciprocating pump is 115 mm and the stroke is 230 mm. The suction pipe is 90 mm in diameter and 4.2 m long. If cavitation takes place at the suction head of 4 m, the barometer stands at 10,3 m of water, and the water level in the sump is 3 m below the pump cylinder axis. 2.1 Find the maximum allowable speed to operate the pump 2.2 What power is expected in overcoming friction at this speed, take f=0.01
Water from a reservoir passes over a dam through a turbine and discharges from a 70-cm ID pipe at a point 95 m below the reservoir surface. The turbine delivers 0.950 MW. Calculate the required flow of water in m3/min if friction is neglected. If friction were included would a higher or lower flow rate be required? (Note: The equation you will solve in this problem has multiple roots. Find a solution less than 1.0 m3/s.) V=___m^3/min?
consider the following conditions: a centrifugal pump has diameters d1 = 7 in, d2 = 13 in, blade widths b1 = 4 in, b2 = 3 in, blade angles β1 = 25° and β2 = 40°, and rotates at 1160 r/min. If the fluid is gasoline at 20°C (ρ = 1.319 slugs/ft^3) and the flow enters the blades radially, estimate the theoretical or “design” quantities. (a) design flow rate in gal/min (b) horsepower (c) head in ft
4. A circular pipe of uniform diameter 500mm carries water under pressure 30 N/cm2 . The mean velocity of water at the inlet (at the datum) is 2.0 m/s. Find the total head or total energy per unit weight of the water at a cross-section, which is 5 m above the datum line.
Q-- Consider the following data relating toperformance of a centrifugal pump:speed 1200 rpm, flow rate 30 L/s, head 20 m, and power 5 kW. If the speed of the pump is increased to 1500 rpm, assuming the efficiency isunaltered, Find the new flow rate and head.
The spiral conical draft tube are connected to Francis turbine. The diameters of the internal and external of tube are equal to 60 cm and 90 cm respectively. The tube should be drowned-approximately 1.5 meter below the lowest tail race level and draft tube high of 600 cm. The velocity at the exit is 1.5 meter per second. (Friction head loss in draft tube = 0.034 m ), calculate:- Find the pressure head at the entrance and the bottom in m of water and in Kg / cm?. the total heads at the same point with reference to the tail race as a datum find the power at the entrance and bottom the efficiency of a draft tube

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