the purpose of lightening and power the field of electric motors especially the AC type has shown a remarkable development in all prospects all over the world. As a result of the technological advancements the engineers throughout the world tried their best of best to come out with the most energy efficient and safe machines particularly‚ in the context of electric motors. In this report we will confine our discussion up to electric motors‚ their construction‚ operations‚ applications‚ performance
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and a motor in a circuit with two jumpers. 4. The theory was applied. The jumpers were connected to the alternate voltage supply. 5. The direction of DC motor was tested and determined. 6. All switches were in closed position at initial condition. 7. Only switch 1 and 4 was closed at the first condition as in figure 2(a). The direction of DC motor and the RPM of DC motor was recorded 8. Switch 1 was opened and switch 2 was closed as in figure 2(b) after the first reading was recorded. The motor was
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ELECTRIC MOTORS I. Introduction Electric motors are considered to be important mechanical devices. They usually convert the electrical energy coming from the mechanical device into its kinetic energy to make it work (Petingco and Resurreccion‚ 2011). In this exercise‚ the students were tasked to use an example of an electric motor‚ identify its parts‚ and make it work. All electrical motors are equipped with stator and rotor. Stator is known as the stationary part of an electric motor while
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Chapter (11) Synchronous Motors Introduction It may be recalled that a d.c. generator can be run as a d.c. motor. In like manner‚ an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As the name implies‚ a synchronous motor runs at synchronous speed (Ns = 120f/P) i.e.‚ in synchronism with the revolving field produced by the 3-phase supply. The speed of rotation is‚ therefore‚ tied to the frequency of the source. Since
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EPHE 380 – Motor Control Final Exam Ian Haig V00711512 Scenario: Walking down a 45 degree slope with a surfboard under my left arm and a large mountaineering backpack on my back. I was walking down the trail to Sombrio Beach which is about a 1.5k hike down a steep trail to the ocean. I had a surfboard under my right arm‚ an axe in my left hand‚ and a large 40 litre hiking backpack fully loaded with supplies on my back. About half way down there is a left turn in the trail which has a declining
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READ MOREBrushless DC Motors are an important class of highly efficient electric motors. They are most frequently used in electric vehicles because of their high efficiency and high power density. They are also present in the small DC fans used in power supplies and CPU coolers. In order to discuss the Brushless DC Motor it is important to first have a basic understanding of the more common Brushed DC Motor which is present in many household items. The brushed DC motor consists of a rotor (the
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Case problem : Ford Motor Company’s Value Enhancement Plan Group 4 : Annie ‚ Duong Boi Ngoc ‚ Jussi ‚ Michael Q1. Does Ford have too much cash? Why did Ford choose to accumulate so much cash? And why is Ford distributing a large amount of cash now? (1) To check whether Ford has too much cash‚ we have to calculate the cash ratio. But the data we have is not complete‚ we cannot find out that ratio. Instead‚ we calculate the cash turnover ratio to check whether Ford has excess cash. Cash
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UC3638 Advanced PWM Motor Controller FEATURES • • • • • • • • Single or Dual Supply Operation Accurate High Speed Oscillator Differential X5 Current Sense Amplifier Bidirectional Pulse-by-Pulse Current Limiting Programmable Oscillator Amplitude and PWM Deadband Dual 500mA Totem Pole Output Drivers Dual 60V‚ 50mA Open Collector Drivers Undervoltage Lockout DESCRIPTION The UC1638 family of integrated circuits are advanced pulse width modulators intended for a variety of PWM motor drive and amplifier
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Differentiating Between Market Structures Paper Differentiating between market structures‚ labor equilibrium‚ and public vs private goods encompasses vast quantity information. Public goods and private goods can be similar‚ however‚ they mostly diverge into very different directions. Labor market equilibrium‚ labor supply and demand must be maximized and evaluated to produce profits for any company. Microsoft owns an estimated 90 percent of the market when it comes to operating systems
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Motor Graders in Construction The motor grader is a large multipurpose machine used for many different construction operations. These many operations include but are not limited to: grading‚ shaping‚ bank sloping‚ ditching‚ and scarifying. Graders can also be employed to clear roads of snow and debris without doing any damage to the underlying roadway surface. Graders are much more “gentle” than dozers and other large pushing machinery. Motor graders are designed for preparing the substrate of roads
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