the balanond three phase paralel cireuit belew.complete the tables uing the provided values Assuming sa sequence strietly une stered values throughout the computationa. Provide up to fur decimal places Note: Neglect watmeter range mtipller
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- Non-Reactive Loads of 10kW, 20kW and 12kW are connected between the neutral and the red, yellow and blue phases respectively of 3-phase, 4 wire . The line voltage is 400. If a three phase motor is now started ,taking 150 A from the lines at a power factor of 0.3 lagging What should be the total current in each line and the neutral wire? Find the total real and reactive power supplied to the loadsIn the circuit of figure shown in the next slide, threeimpedances are 12 – j10 ohms, 10 + j20 ohms, and 15 + j0ohms, connected between conductors a, b, c and the neutral“n” of a balanced 230 volts, 60 hertz, 3 phase, 4 wire, ABCsystem. Using Van as the reference vector, determine:a. Current in each impedanceb. Neutral current Inc. Readings of wattmeters W1, W2, & W3d. Power in each impedance ..26. An unbalanced star-connected load is supplied from a symmetrical 400-V, three-phase, three-wire system. The impedances are: (1+J2)ohm between line R and neutral point of load: (2+j3)ohm between line Y and neutral point of load: (3-j3)ohm, between line B and neutral point of load. Calculate the current in line. B. Phase sequence RYB. [35.5 A] Answer
- A Factory is supplied froma 3-phase, 4-wire, 400 V, simmetrical system. The resistance of each line is 0.4 Ωand of the neutral 0.6 Ω. The power input to the main is as follows: 10 KVA at a laggin poer factor ofd 0.7 to phase R, 10 KVA at a leading power factor of 0.7 to phase S, and 10 KVA at unity power factor to phase T. Calculate the current in the neutral wire and the voltaje between line R and the neutral at the Factory. Phase secuence RST.In the circuit of figure shown in the next slide, three impedances are 12 – j10 ohms, 10 + j20 ohms, and 15 + j0 ohms, connected between conductors a, b, c and the neutral “n” of a balanced 230 volts, 60 hertz, 3 phase, 4 wire, ABC system. Using Van as the reference vector, determine:a. Current in each impedanceb. Neutral current Inc. Readings of wattmeters W1, W2, & W3d. Power in each impedanceIn a 3-phase system, the power dissipated in the delta connected load is √3 times greater than the power dissipated in the star-connected load. select one: True ( ) False ( ) And why?
- A balanced, three-phase, positive sequence, with grounded neutral source, supplies power to a balanced delta connected load. For the system, additional information are as follows: Vbc = 443 cis 191 degrees volts; and Ic = 10.5 cis99 degrees amperes What is the value of the total real power of the delta load in watts?Non-Reactive Loads of 10kW, 20kW and 12kW are connected between the neutral and the red, yellow and blue phases respectively of 3-phase, 4 wire . The line voltage is 400.a. Calculate the current in each line andb. The current in the neutral,c. If a three phase motor is now started ,taking 150 A from the lines at a power factor of 0.3 laggingI. What should be the total current in each line and the neutral wire?II. Find the total real and reactive power supplied to the loadsI want help with D) AND E), I ALREADY HAVE ANSWERS FOR A, B, AND C. THANKS Using the more complete model on slide 24 of the 3-phase systems ppt, assume we have a Y-Y system with generator phase voltages of 120Vac and generator phase impedance of 0.1+j0.2 Ω, connected through transmission lines with the impedance of 0.5+j1 Ω to a load with phase impedance of 15+j10 Ω. Assume the “a” phase of the generator is at 0°. Use single-phase analysis where appropriate. a)What are the current phasors through the transmission lines? 6.2486<-35.6764 degrees A b)What is the voltage phasor across each of the generator impedances? 1.3972<27.7585 degrees v c)What is the voltage phasor across each of the transmission line impedances? 6.9861<27.7585 degrees v d)What is the voltage phasor across each of the phases of the load? e)What is the power factor of the load?
- A balanced load with ZR = ZB = ZY = ……<00 Ω was supplied a three phase 50 Hz, 100 V between line (balanced source). A fault on phase ‘B’ causes an open circuit, which unbalanced the load as shown in Figure 4. Similarly, a fault on the load of phase ‘Y’ cause a short-circuit, which unbalanced the load as shown in Figure 5. Using complex notation determine and analyse the individual phase currents and the neutral current in both figure.Question 5: A single-phase transmission line has a resistance of 0.22 ohm and inductive reactance of 0.36 ohm. Find the voltage at the sending end to give 500kva at 2000V at the receiving end at a load power factor of 0.707 lagging. Also find the efficiency of transmission at this load. Subject Power Transmission and DistributionThe power flowing in a three-phase, three-wire balanced load system is measured by the two-wattmeter method. The reading on wattmeter A is 5kW and on wattmeter B is -1kW. If the voltage of the circuit is 440V, 60Hz, what is the value of the capacitor that must be introduced into each other phase to cause the whole power measured to appear on wattmeter A? Assume the capacitor to be Y-connected.