A water truck drives slowly around a construction site, spraying water to keep dust down. A pump maintains aconstant pressure of 100 kPa, gage, and the water is dispersed through 20 spray nozzles, each of diameter 1 cm. If thetruck is initially filled with 4000 L of water, and the flow rate is constant, determine how long the truck can drivebefore a refill is needed. [57.0 s]

Answered: Image /qna-images/answer/a991b6c5-230e-4e3d-9ab9-3b5b085a4b95.jpg

Answered: A water truck drives slowly around a…

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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Q1/ A) An impulse wheel is to be designed to develop at the nozzle pressure is 40 kg/cm and the deflect the jet impinging on them 150°. The center line of the bucket is on a circle of 250 cm find:- 1. The speed of the Pelton wheel (rpm). 2. Efficiency and hours power the theoretical, at the nozzle flow rate 3 m/sec. 3. Specific speed. B) What importance has the ratio? M = (mean diameter of Pelton wheel)/ (least diameter of jet) in designing the Pelton turbine.
dp 1. It shows that the behavior of fluid is A From the equation stated, show the formula for mass flow rate AVp = c. :C.
Vacumm You are designing a vacuum system with a desired equilibrium pressure of 10-7 torr. The turbomolecular pump you are using has a pumping speed of 400 L/s. What is the maximium surface area of the chamber that you can allow, assuming that the outgassing rate per square cm 10-9 torr L/s? Note : total outgassing rate G = ( outgassing rate per area ) * ( area )
Example 1: A system has a volume flow rate requirement of 1lit/s with an index run AP of 30kPa. Find an appropriate pump from the A manufacturer's catalogue gives the following information for a centrifugal pump operating at 12rev/s: P| 49.38 47.5| 44.38 40 34.38 27.5 19.38 Q|0.25 0.5 0.75 1.25 1.5 1.75 yelume flow rate
35. Water enters a heated tube of 2 mm diameter at 30 C and leaves the tube at 60 C. Find the water mass flow for the average Reynolds number of 1000. [Ans.: 0.00564 kg/s].
A pump is installed in a pipe system, where at the suction side 1.0 m below the pump, an open manometer reads a vacuum of 20 cm of mercury. The pipe is 10 cm in diameter and the flow is 35 L/s of water. Find the total energy at the location of the manometer, relative to a datum, through the pump. A. 12.74m B. -4.67 m C. -2.72 m D. 2.56
i. A wind turbine has the following data: Downstream wind velocity = 9 m/s Upstream wind velocity =18 m/s Rotor Power output = 1 MW a. Compute the wind rotor efficiency. b. Calculate power in the wind and the length of the rotor blades ii. ComparethedifferenttypesBiogasplants?
A Huston turbine impeller with a diameter of 0.217 m is used in a tank with a diameter of 0.65 m filled with liquid to a height of 0.65 m. Four baffles (baffles) are used to avoid vortex, all with a width of 0.01 m. The turbine operates at 275 rpm with a liquid that has a density of 1000 kg/m³ and a viscosity of 0.020Pa.s. a) Considering that the mechanical efficiency is 50%, what is the power in HP of the commercial engine that you should specify?
A Huston turbine impeller with a diameter of 0.217 m is used in a tank with a diameter of 0.65 m filled with liquid to a height of 0.65 m. Four baffles (baffles) are used to avoid vortex, all with a width of 0.01 m. The turbine operates at 275 rpm with a liquid that has a density of 1000 kg/m³ and a viscosity of 0.020Pa.s. a) Calculate the power required in KWatts by the agitation system.
2. The specific speed of a turbine is 85 rpm and running at 500 rpm. What is the maximum power, in HP, delivered by the generator if the head is 25 m and generator efficiency is 90 %. Copy the problem, then show Complete Solution/s (i.e. transformations, equivalent formula, etc).
Please show your complete solution. Thank you! Air flows in a steady flow manner through a converging tube. At the inlet the pressure is 690kPaabs and the density is 0.838 kg/cu.m. If air enters with a volume flow of 125 cu.m per min at the rate of 94 m/min and the exit section has a diameter of 350mm, determine a.) the mass flow rate, kg/min b.) the diameter of the entrance section and c.) the exit velocity. Assume that the density is constant.
A Pelton wheel operates from an effective head of He = 450 m and at a flow rate of 5.0 m³/s. The wheel radius is r2= 0.85 m and its rotational speed is 430 rpm. The water which leaves the penstock is divided into a few streams. The nozzle coefficient is CN = 0.98 for each of the nozzles. Impulse blades turn the flow into the direction ß3 =-62° and as a result of friction the relative velocity reduces by an amount which gives a velocity coefficient cv = 0.96. Find, (a) the efficiency of the turbine, (b) the power specific speed, (c) the jet number, d) the nozzle diameter e) the number of buckets in the wheel. First find the exit velocity from the nozzle and the blade speed; V2 = CN V29H. U = r,N Туре Ssp | n % The relative velocity entering the Wheel; W2 = V2 – U Pelton wheel 88 – 90 Single jet Twin jet Three jet Four jet 0.02 - 0.18 Relative velocity at the exit; 0.09 – 0.26 89 – 92 W3 = c,W2 0.10 – 0.30 89 – 92 0.12 – 0.36 86 The tangential component of the relative velocity at the…

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