DC to AC Inverter Assignment # 2/ Spring 2013 CE721 Ahmad Ghaffari‚ 1203840 Submit Date: Tuesday 19‚ 2013 Abstract DC-AC inverter is a device that converts a direct current (DC) into an alternating current (AC). When there is no AC main power for applications in caravans‚ remote area and etc.‚ this tool is very suitable to use. It mainly converts a DC source (like a car’s battery) to an AC source (230V) to use for power application like
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| | | | | | | DC Motors | | | | | | | | | | | | | The direct current (DC) motor is one of the first machines devised to convert electrical power into mechanical power. Permanent magnet (PM) direct current converts electrical energy into mechanical energy through the interaction of two magnetic fields. One field is produced by a permanent magnet assembly; the other field is produced by an electrical current flowing in the motor windings. These two fields result in a torque
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Types of DC Motors and DC Generators MOTORS – convert electrical energy to mechanical energy Motors and generators are the most frequent used electrical machines. ❖ Generators action can take place when and only when‚ there is a relative motion between conducting wires and magnetic lines of force. ❖ Electric motor is in operation when it is supplied with electrical energy and develops torque‚ that is‚ a tendency to produce rotation. ❖ In DC generator‚ the armature winding is mechanically
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Electrical Machines Electrical Machine Stationary Transformer Rotating DC AC Motor Induction Generator Motor Generator Synchronous Motor Generator Electrical Generator / Motors An electric generator converts mechanical energy into electrical energy. An electric motor converts electrical energy into mechanical energy. Mechanical Input Electrical input ELECTRICAL MACHINES Generator ELECTRICAL MACHINES Motor Electrical Output Mechanical output
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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 braked. The RPM of DC motor was recorded. 9. Step 7 was repeated by switching the switch
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of symbols adds depth to his stories and helps to reveal different aspects of his characters. In Rappaccini’s Daughter‚ Hawthorne uses symbolism to create a modern day tale of Adam and Eve in the Garden of Eden.There are two settings for this story. The first and main setting is an eye appealing garden next to Giovanni Guasconti’s room which is located in Padua‚. Although a large portion of his stories are allegories‚ Hawthorne’s preference is to draw more heavily on symbolism (Pennell 13). His use
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fjäder. 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
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September 9th New Ark Arrive 5:40pm Depart 7:35pm 1h 55m Today it was my first time going to the New Ark garden. I left home at about 4:50pm and it took me almost an hour to find Smith Street. I wanted to make sure I was on time because I never knew there were community gardens in the South‚ and did not know what to look for. I went to McKinley Middle right around the corner from the garden and still passed up the street about ten times. (It made me feel so blind because I know I looked past that
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first botanical garden in 1822. [1] Through continuous planning and cultivation‚ Singapore has earned the name of "Garden City". From the first tree planting by Mr Lee Kuan Yew in 1963‚ Gardens by the bay (Gardens) is a huge leap with its $1 billion investment.[2]Aligned with Singapore’s new aspiration to become an international eco-tourism icon‚ Gardens is alleged to put Singapore at the forefront of eco-tourism and promote Singapore as a "City in the Garden". 2. The alignment of Gardens to Ecotourism
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D. C. Polarography * Introduction: - Polarography is a particular case of general electro analytical technique known as voltametry. These methods are used to study the decomposition and quantitative analysis of solution. Principle: - It is a rapid and accurate technique in which electrolysis of experimental solution is carried out by using one electrode of comparatively large surface area (i.e. non-polarisable electrode) and the other electrode having a very small area (polarisable electrode)
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