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[DOC File]UNIT – I
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Calculate the capacitance and charging current of a single core cable used on a 3 phase, 66 kV system. The cable is 1 km lone having a core diameter 15 cm and sheath diameter 60 cm. The relative permittivity of insulation is 3.6 and the supply frequency is 50 Hz.
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[DOC File]U.S. Forest Service
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To properly add loads together,; they must be added vectorially, that is KW (Kilowatts from each load must be added together and KVAR's must be added together to get the resultant KVA which is used to find total power comsumption, or to calculate total line current for use in sizing wire or circuit breakers.
calculate line from 2 points

[DOC File]10. Three-phase systems.
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In the balanced Y systems, the phase current has the same amplitude as the line current , whereas the line voltage has the effective value which is times greater than the effective value of the phase voltage, . Hence, using (22), we obtain (23) Similarly, we derive. (24) In the unbalanced systems, we add the powers of each phase (25). (26)
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[DOC File]OBJECT - SIUE
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What are the line current and the total three-phase power? 3. A three-phase motor draws a current of 10 amperes on a 440-volt line, and its power factor is 80 percent. Calculate the apparent power, the real power, and the reactive power. 4. A 3( transformer delivers 120 KVA to a 3( load at a line-to-line voltage of 2400 V. Calculate the current ...
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[DOC File]Module B2 g.iastate.edu
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The current per phase in each load. The total real and reactive powers in each load and the line. Problem 12. A three-phase line has an impedance of 0.4+j2.7 ohms per phase. The line feeds two balanced three-phase loads that are connected in parallel. The first load is absorbing 560.1kVA at 0.707 power factor lagging.
calculate line from 2 points

[DOC File]Washington University in St. Louis
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careful to shut off the 3-phase breaker each time the DMM connections are moved, accurately measure the rms values for the three line-to-line voltages and the three line-to-neutral voltages at your station using three DMMs. c. The "green" neutral wire on the 3-phase supply provides a return to ground.
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[DOC File]CC Commercal Element 3 Queston Pool
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3-64J1 What is the current flowing through a 52 ohm line with an input of 1,872 watts? A. 0.06 amps. B. 6 amps. C. 28.7 amps. D. 144 amps. 3-64J2 The voltage produced in a receiving antenna is: A. Out of phase with the current if connected properly. B. Out of phase with the current if cut to 1/3 wavelength. C. Variable depending on the station ...
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[DOC File]Chapter 7 Additional Problems - McGraw Hill
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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. At this point, , the measured input power is , …
calculate line from 2 points

[DOC File]UNIT – I
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A 50 Hz, 4 pole, 3 phase induction motor has a rotor current of frequency 2 Hz . Determine (i) The Slip, (ii) Speed of the Motor. A 6 pole, 3 phase, 50 Hz induction motor is running at full – load with a slip of 4%. The rotor is star-connected and its resistance and stand still reactance are 0.25 Ω and 1.5 Ω per phase.
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[DOC File]3 - University of Minnesota Duluth
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A three-phase motor draws 10 amps of current from a 440-volt line at a power factor of 80 percent, lagging. Calculate the three-phase apparent power, S, and the three-phase real power, P: _____ _____ _____ A transformer supplies 120 kVA to a three-phase load at a line voltage of 2400 V rms. Find the line current:
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Calculate line current 3 phase