How the efficiency of induction motor is measured? S. Corino E. Romero L.F. Mantilla Department of Electrical Engineering and Energy E.T.S.I.I. y T. Universidad de Cantabria Avda de Los Castros‚ 39005 Santander (Spain) phone:+34 942 201381‚ fax:+34 942 201381‚ e-mail: mantillf@unican.es Abstract The efficiency is of paramount importance nowadays due to increasing electrical energy demand‚ increasing awareness of environmental problems as greenhouse effects and increasing fossil fuel prices
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rectifier. It is never used in industrial applications because of its poor performance. In a single-phase half-wave rectifier‚ for one cycle of supply voltage‚ there is one half-cycle of output‚ or load‚ voltage. As such‚ it is also called single-phase one-pulse rectifier. Simulation is performed using R‚ RL and RLE load on the output side of the rectifier. (a) R load : The circuit diagram of a single-phase half-wave rectifier is shown in Fig.1. During the positive half cycle‚ diode is forward biased
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4.4 Quadrature phase shift keying (QPSK) Quadrature phase shift keying (QPSK) has twice the bandwidth efficiency of BPSK since two bits are transmitted in a single modulation symbol. In the phase of the carrier takes on one of four equally spaced values‚ such as 0‚ π/2‚π and 3π/2‚ where each value of phase corresponds to a unique pair of message bits. The Quadrature phase shift keying (QPSK) signal for this set of symbol states may be defined as s_QPSK (t) =√(〖2E〗_s/T_s ) cos[〖2πf〗_c t +(i-1)π/2]
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critical point. Now‚ when a state of matter changes from one state to another is called a phase shift. Phase shifts are extremely important and most commonly observe phase shifts daily. For an example‚ when water freezes into ice‚ or the water in the shower turns to steam. To begin to start describing how a phase shift works we must understand factors that influence a phase transition. Variables that effect a phase shift are volume‚ pressure‚ temperature‚ and number of moles or molecules present in a
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NEW 7 QC TOOLS 1. Affinity Diagrams For Pinpointing the Problem in a Chaotic Situation and Generating Solution Strategies ò Gathers large amounts of intertwined verbal data (ideas‚ opinions‚ issues) ò Organizes the data into groups based on natural relationship ò Makes it feasible for further analysis and to find a solution to the problem. Advantages of Affinity Diagrams ò Facilitates breakthrough thinking and stimulate fresh ideas ò Permits the problem
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7 Indicators That You May Have Skin Cancer Truthfully‚ cancer is a hated disease. Skin cancer affects the victims’ skin in different ways‚ at times even costing lives. However‚ you can detect it early and take the appropriate measures. If you ever detect any of the below signs on your skin‚ the best option should be to see a doctor right away and have the condition diagnosed at an early stage. In case it’s confirmed to be a cancerous infection‚ some tests have to be run to determine at what stage
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Journal Review Whitney Hunt HCA 250 August 4‚ 2013 Denise Guerrier Journal Review The article that I read about addresses a lot of information about violence in the work place‚ a lot of information that I was unaware about. Many people are not aware of the violence that can occur in the work place when they get up in the morning and get ready to go to work. Although there are many ways to prevent violence in the work place‚ when it does happen it can take a toll on anyone involved. There
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The master that I chose is Sun Pu-erh. Since her troubles with attaining the Tao were that she thought she was a genius from the beginning and needed very little meditation and principle to attain the Tao. But she learned down the road that there is no such thing as knowing too much. She has shown the most perseverance to attain the Tao‚ by even scaring her face so that she could travel to a village so she could attain imortality faster. Her travels and hardships were very interesting to read and
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User - The User Domain is the critical backbone of our network and we must pay close attention to user activity and shape user behavior on our network. I list this as a high priority due to the fact that it is the one that will most likely open up threats on our network from file downloading and surfing the web. My proposal for a solution for this would be to restrict web browsing to only required users. This will allow us to focus our concentration on those users‚ monitoring for potential network
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change model and how the seven essential parts of the model are used my student leaders and can be utilized in a higher education background to create sustainable chance for students on different types of colleges. Within exploring the seven c’s of the social change model will be addressed on how this applies to the Marcus Garvey Cultural Center and how they play out in their position at the center. The social change model consist of seven main components known as the seven c’s of leadership that
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