pQT/TAN = (pump output power‚ no leakage)/(actual power delivered to pump) where p : pump discharge pressure [Pa] QT: pump theoretical flow rate [m3/s] TA : theoretical torque delivered to pump [Nm] N : pump speed [rpm] Pump Efficiency (Mechanical) Or ηm = TT/TA = (theoretical torque to operate pump)/(actual torque delivered to pump) where TT [Nm] = (V [m3] × P [Pa])/2π TA = (actual power delivered to pump [W])/(2πN/60 [rpm]) Total/overall efficiency Total efficiency: ηtot = ηvol × ηm where
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Khumani Iron Ore Mine Paste Disposal & Water Recovery System By Du Toit T*‚ Crozier M*‚ Abstract Traditional iron ore beneficiation plants using washing screening and Jigging processes require large volumes of process water. However when a suitable large iron ore deposit is found in a location where rainfall is erratic and raw water sources are limited. Innovative process designs are required to minimize water losses‚ maximize reuse of process water and minimize raw water intake to ensure
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LABORATORY REPORT SUBMISSION Experiment Title : Archimedes Principle Due Date : 13 Nov 2014 Lab session : Group C Group : 03 STUDENTS DECLARATION OF WORK We declare that the work submitted is our own. We confirm that we have read and understood the University regulations with regard to Plagiarism‚ Collusion and Cheating in this work will be penalized. No. Student ID Group Members Signature 1 1001336124 Rafat Saifullah Joy 2 1001025540 Liew Jian Huei 3 1001233272
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ELE 1201 MICHAEL FRASER WORKSHEET # 3 1. In the magnetic system of the Figure below two sides are thicker than the other two sides. The depth of the core is 10 cm‚ the relative permeability of the core‚ ur = 2000‚ the number of turns N = 500‚ and the current flowing through the coil is i = 1 A. (a) Determine the
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+ 1+? ? ? ? ?1 P2’(s) (Eq.2) Equation 2 can be represented in a block diagram as below: ?1 ???+1 P1’(s) + - ?2 ?? ?+1 P2’(s) A Block Diagram of a pressure system with two resistances Assume: ?1 = 2 min/m3; ?2 =4min/m3; V=5m3 ?p = ??1 ?2 ?1 +?2 = 5(2)(4) 2+4 = 20 3 ≈ 6.6676??? I. Processing Without Control Where ? = ?’(?) P1 ’(s) ?2 ?1 +?2 = = ?1 1+
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the net force is zero in both cases. 1-7 A plastic tank is filled with water. The weight of the combined system is to be determined. Assumptions The density of water is constant throughout. Properties The density of water is given to be ρ = 1000 kg/m3. Analysis The mass of the water in the tank and the total mass are V =0.2 m 3 mtank = 3 kg mw =ρV =(1000 kg/m )(0.2 m ) = 200 kg 3 3 mtotal = mw + mtank = 200 + 3 = 203 kg Thus‚ 1N W = mg = (203 kg)(9.81 m/s 2 ) 2 1 kg ⋅ m/s
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Course BTEC Level 3 Extended Diploma in Business Unit Unit 3: Introduction to Marketing Wk No Topic and Content Link to Specification (or appropriate) Notes (including specific resources) Evaluation 1 (8/9/14) Role of marketing (P1‚M1‚D1) Objectives – public/private Marketing Techniques – Ansoffs matrix P1‚ M1‚ D1 Group task on setting SMART objectives/different types of objectives Input on Ansoff’s matrix Group activity on application of Ansoff. Case study on Ansoff – comparing the use of
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that the hydraulic head h at any time t is difference between the meniscus level in the standpipe and the overflow level. (Barnes‚ 2000) CALCULTAIONS AND RESULTS V=5.936 x 10-5 m3 a=5.936 x 10-5 m3/0.8m=7.42 x 10-5 m2 A=π0.012/4=7.854 x 10-3 m3 L=0.13 m Test 1 a=7.42 x 10-5 m2 L=0.13 m h1=1.025 m h2=0.505 m A=7.854 x 10-3 m3 t2=17.84 sec t1=0 sec k1=7.42 x 10-5m2 x 0.13m x ln2.0297 / 7.854 x 10-3m3 x 17.84sec k1=4.873 x 10-5 m/s Test 2 a=7.42 x 10-5m2 L=0.13
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treatment of rainwater is not required for these purposes. The volume of rainwater collected from rainwater harvesting system varying from place to place and depends on weather. In a tropical country like Malaysia it is easy to collect 2 m3 in a single rain while 10 m3 was collected annually in Zambia‚ Africa from a roof of almost of the same size. The main advantages of rainwater harvesting systems are
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is the anode and has the lower‚ more negative‚ reduction potential. By comparing the voltage values obtained for several pairs of half-cells‚ you can establish the reduction potential sequence for the five metals in this lab. M1 M2 M5 M3 M4 Figure 1 OBJECTIVES In this experiment‚ you will • Prepare micro voltaic cells and measure their potential relative to a standard electrode
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