*7.18 Calculate the force F required on thepiston to discharge 500 m³/s of waterthrough the syringe shown in the Fig. 7.11 below.Take in to account only the frictional loss inthe syringe needle and assume fully developedlaminar flow in the needle. (Take uwater = 103Ns/m?).0.51040 mmFig. 7.11

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Answered: *7.18 Calculate the force F required on…

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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9.41. A horizontal rough pipe of 150 mm diameter carries water at 20°C. It is observed thatthe fall of pressure along this pipe is 184 kPa per 100 m when the flowrate is 60 1/s. What sizeof smooth pipe would produce the same pressure drop for the same flowrate?
Air @ 68°C is pumped through a pipe of internal d = 6.4in: If the vol flowrate is set to 6.2 ft3/min, is the flow laminar or turbulent? assume P is atmospheric.
9.7. Through a hydraulic turbine flow 2.8 m3/s of water. On the 1 m inlet pipe at elevation 43.5,a pressure gage reads 345 kPa. On the 1.5 m discharge pipe at elevation 39, a vacuum gage reads150 mm of mercury. If the total head lost through pipes and turbines between elevations 43.5and 39 is 9 m, what power may be expected from the machine?
The following system is fed by a centrifugal pump. The piping is constructed from smooth plastic of OD 55 mm, wall thickness 2.5 mm. The minor losses for the system prior to the pump are given by KL = 12.0. The system curves for this pump are attached. If the flowrate is reduced to 1.4 m3/hr, and the upstream head requirement were 17 m, what would the electrical power requirement of the pump be?
Theoretically, what diameter of standard, sharp-edged orifice will be required to produce a discharge of 1.25 cfs of water under a head of 11.5 ft?
A propeller turbine develops 12,000hp, and rotates at 145rpm under a head of 20m. The outer and hub diameters are 4m and 1.75m, respectively. Calculate the inlet and outlet blade angles measured at mean radius if overall and hydraulic efficiencies are 85% and 93%, respectively. Show schematic diagram and provide solutions.
For the siphon in Fig. 6.26, calculate the distance X re-quired to obtain a volume flow rate of 7.1 X 10-3m³/s.
The pipe bend of Fig. has D 1 = 27 cm and D 2 =13 cm. When water at 20 ° C fl ows through the pipe at 4000gal/min, p 1 =194 kPa (gage). Compute the torque requiredat point B to hold the bend stationary.
A multi stage pump is required to deliver of 2 l/s water against a maximum discharge head of 240 m. The diameter of radial bladed impeller should not be more than 15 cm. Assume a speed of 2800 rpm. Determine the impeller diameter, and power. Overall efficiency is 0.7.
A sharp edged orifice will be required to produce a discharge of 35 liters/sec of water under a head of 3m. Find the required diameter, when C = 0.595
Two pipes with C1= 120, connected in series, discharge 4.75 cfs with a loss of head of 27 ft. Each pipe has a length of 1000 ft.If one pipe has a diameter of 18 inches, determine the diameter of the other pipe. Neglect minor losses.
If a dust-proofing oil at 30°C had been flowing at 0.046 m /s through a 150-mm pipe in which along-radius flow nozzle 75 mm in diameter, what would have been the deflection of the mercury? Assume C=0.98.

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