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[DOC File]Engineering School Class Web Sites
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2. With Ifield = 0.0 Amp and the field poles demagnetized, apply 175 V (line-line, 3-phase, 60 Hz), to the AC machine and measure and record line current, phase voltage, and phase power. This allows calculation of the machine’s equivalent reactance. 3. Connect the DC machine as a separately excited DC generator driving a load of 6 ohms.
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[DOCX File]ELECTRICAL MACHINES – II - Erode Sengunthar Engineering ...
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A 3300V, 3 phase synchronous motor running at 1500 rpm has its excitation kept constant corresponding to no-load terminal voltage of 3000V. Determine the power input, power factor and torque developed for an armature current of 250A if the synchronous reactance is 5 Ω per phase …
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[DOCX File]Principle of DC Motor - Ahmad,s Web - Home
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A thermal overload relay serves to protect a motor against overloading. The term overload means that too much load has been placed on the motor. A motor is designed to run at a certain speed, called its synchronous speed. If the load on the motor increases, the motor draws more current to continue running at its synchronous speed.
3 phase motor calculation formula

[DOC File]Mgm-321
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3.1 Enlist the faults their causes and remedies of squirrel cage 3 phase A.C. motor and wound rotor motor. 3.2 Identify the faults, their causes and remedies of 3 phase synchronous motor. 3.3 Explain common tests to locate faults in A.C. motors stators. 3.4 State the mechanical faults in A.C. motors. 3.5 Perform maintenance work on AC 3-phase ...
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[DOCX File]Microsoft Word - SAR_26Jun2014.docx
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Prepare circuits for starting and speed control of DC machine and three phase induction motor. 3+1. 10. DC Motor Characteristics . ... To study the voltage regulation for a single phase transformer using resistive load. 2. Calculation of the transformer parameters using.
3 phase power calculation

[DOC File]BASIC NEC CODE RULES AND DESIGN PRACTICE
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If circuit is loaded up to ampacity and distance to load is around 100 feet, then voltage drop will govern and will require larger wire size. If more than 3 phase wires are in one conduit, then wires must be derated according to Note 8, after Table 310-19 as follows: TABLE 1. Number of Conductors Percent of Values in 310-16 *1-3 80 *4-6 80
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[DOC File]Induction Motor Design (3-Phase)
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From point C, draw a line parallel to o/p line, so as to cut the circle at pint P. Join OP which represents the full load current of the motor to current scale. Operating power factor can also be found out. Full load efficiency. Draw a vertical line from P as shown in above figure. ... Induction Motor Design (3-Phase) ...
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[DOC File]UNIT – I
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The power supplied to a 3- phase Induction motor is 40 kw and the corresponding stator losses are 1.5KW. Calculate the total mechanical power developed and rotor copper loss if slip is 0.04 per unit. A 3- phase, 6- pole, 50 Hz, Induction motor has a slip of 1% at no load and 3% at full Load.
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[DOCX File]Three-Wattmeter Method of Three Phase Power Measurement
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The above equation (1) gives the total power absorbed by a 3 phase balanced load. Thus, the sum of the readings of the two Wattmeters is equal to the power absorbed in a 3 phase balanced load. Determination of Reactive Power by Two Wattmeter Method. To get the reactive power, multiply equation (3) by √3.
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[DOC File]Chapter 7 Additional Problems - McGraw Hill
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Chapter 7 Additional Problems. X7.1 . A three-phase, 1200 HP, 2300 V, 60 Hz, RR synchronous machine has and . When operated with the mechanical load disconnected with rated voltage and frequency, the field current is adjusted until line current has a minimum value.
3 phase motor power calculation

3 phase motor load calculation