test is conducted on single-phase and three-phase transformer to determine the iron core resistance‚ Rc and magnetized reactance‚ Xm. The purpose of short-circuit test is to determine the series branch parameters of the equivalent circuit of a Real transformer. The series branch parameters is the summation of primary and referred secondary resistances and reactance if refer to primary sides. In other words‚ short-circuit test is conducted on single-phase and three-phase transformers to determine the
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Determine R and X. 3. Two loads connected in parallel are supplied from a single-phase 240-Vrms source. The two loads draw a total real power of 400 kW at a power factor of 0.8 lagging. One of the loads draws 120 kW at a power factor of 0.96 leading. Find the complex power of the other load. 4. The load shown in figure 1 consists of resistance R in parallel with a capacitor of reactance X. The load is fed from a single-phase supply through a line of impedance 8.4 + j11.2 . The rms voltage at the load
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Condition Based Maintenance vs. Phase Based Maintenance Activity 9.1 – Research Paper MBAA 520 Organizational Behavior Theory‚ Applications in Aviation EXECUTIVE SUMMARY There is an increasing desire for the implementation of condition based maintenance programs to replace the traditional hour based maintenance on Military rotor wing aircraft. There are several advantages and disadvantages to this type of maintenance. The purpose of this paper is to discuss both and the affect that they play
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hours and are awake for sixteen. There are two main types of circadian rhythm disorders: exogenous and endogenous. Examples of exogenous disorders include shift worker disorder and jet lag disorder. Some endogenous disorders include advanced sleep phase disorder‚ irregular sleep-wake rhythm‚ and the non-24-hour sleep-wake syndrome. The journal article “How to assess circadian rhythm in humans: A review of literature” reviews the effect of circadian rhythm on epilepsy‚ along with the methodology of
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Earthing Data” option. Also ignore the effects of resistance in the system. II. Load Flow Analysis A. System analysis and problem solving Choose the data and results options： Busbar: Voltage (p.u.)‚ Voltage (kV)‚ Voltage angle ( o ) and Three Phase Fault level (MVA). Generators‚ Transformers‚ Lines and Loads: Real power (MW) and Reactive power (MVAr). Perform the load flow analysis (shown as figure 2.1) Figure 2.1 load flow analysis Give a table 2.1 for Results of Generators Transformers
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multiple car crashes with many casualties‚ school shootings‚ and environmental contamination from chemical agents and/or bioterrorism (Maurer‚ & Smith‚ 2016). Disaster can be divided into three phases‚ pre-impact‚ impact and post-impact. Pre-impact phase is the phase before the disaster happens. In the phase the Nursing interventions which focus on primary prevention about health promotion and specific protection‚ can be educating‚ training‚ prepare people for disaster. The example of the intervention
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are the five types of single phase motors used in the industry? 13. Which of the following correctly lists the motor’s starting torque from lowest to highest? 14. Which of the following is a common use of a shaded-pole motor? 15. How does a shaded-pole motor operate? 16. How can a shaded-pole motor be reversed? 17. What determines the rotation of a shaded-pole motor? 18. Draw a diagram of a three-speed‚ shaded-pole motor. 19. What enables a split-phase motor to develop enough torque
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faults‚ may either be three phase in nature involving all three phases in a symmetrical manner‚ or may be asymmetrical where usually only one or two phases may be involved. Faults may also be caused by either short-circuits to earth or between live conductors‚ or may be caused by broken conductors in one or more phases. Sometimes simultaneous faults may occur involving both short-circuit and broken conductor faults (also known as open-circuit faults). Balanced three phase faults may be analysed using
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Phase the 6th: The Convert Chapter XLV Physical Journey: Phase the Sixth begins after Tess travels to visit Angel’s family at their house‚ where she doesn’t find Angel’s parents due to it being a Sunday and they are at Church. Instead‚ she comes across Angel’s brothers Felix and Cuthburt who are discussing his unfortunate marriage to Tess. In this chapter Tess is travelling back to Flintcomb-Ash farm where she comes across Alec D’Urberville on the northern half of Long-Ash Lane. At the end
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especially at higher voltages. In British practice‚ high voltage transmission lines carry voltages ranging from 66kv to 132kv‚ and extra high voltage lines carry voltages from 220kv to 380kv. In all cases the power is transmitted in the form of three-phase alternating current at 50cycles/sec‚ and the cost of an overhead line depends largely on conductor size and voltage [Cheesman‚ 2007]. Figure 1: General layout of electricity networks (Diagram taken from: http://en.wikipedia.org) Structure of
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