please show clear steps Investigate the power delivering capacity of different transformer for the following different...
A balanced three-phase source with a 208 V rms (line-to-line) is delivering power to a balanced Y-connected load with phase impedance Z1 = 4 + j 3 Ohms in parallel with a balanced delta-connected load with phase impedance Z2 = 7.5 + j 6 Ohms. Calculate the active (real) and reactive (imaginary) powers delivered by the source. Draw the power triangle. What is the power factor of the combined load?
please answer all questions from i to vi. ULIUS 1. Explain how a fuse saving scheme is performed using a reciose. ii. What is a sectionalizer and how does it work is a sectionalizer and how does it work in coordination with a recloser? 111. Explain the effect of the magnetizing inrush current on transformer IV. Explain how transformer core faults, inter-turn faults and oil leaks be detected. V. Show the wiring diagram of a differential relay to protect a...
help me please please answer many as possible 10. The hysteresis loss in the core of a transformer can be reduced by A. increasing the frequency of the aliemating current, B. using a solid iron core. C. using grain-oriented-steel D, reducing the connected load. 11. In Fig. 1(b) in the text, the phasor I, It is the resultant of the A. exciting and the magnetizing current. B. active and the reactive secondary current. C. primary and the exciting current. D....
show all work please be clear and show all steps thank you Use power series to represent the functions: a) f(x) = 1 + 24 ( See ex. 6-3) b) 962) = ( p538 ) 7 Use properties of power series to represent the function f(x) = 2 Hint use tal above 1+24 can use the book , clan notes
Electrical Circuit problem Please show all the steps with details in 'clear handwriting' Problem 4. Find Rab for the circuit in the previous problem, but this time begin by using a delta-wye conversion on the delta giving by the 10, 5, and 12.5 ohm resistors. Hint: your results for equivalent resistance and power should be the same as in the previous problem. 100 120 V + c W - 30 22 -W-TW 3 2022
1. In order to meet an emergency, three single-phase transformers with 12.470/7.200 V are connected in Delta-Wye to form a three-phase transformer which is fed by a 12.470 V transmission line. If the transformer supplies 60 MVA to a load, calculate: (3 marks) a. The turns ratio for each transformer b. The currents in the primary and secondary windings of the transformer c. The primary and secondary transmission line currents 2. A Wye-Delta transformer is connected to a 66 kV...
Please answer this question Q3. The power rating and the voltage ratio of the power transformer and the CT ratio are show in Fig 3. Determine the transformation turns ratios and the connection of the interposing transformers required in order to set the differential relays, which are provided with taps. Draw the complete three- phase connection schematic diagram and identify the currents in each of the elements. 150/ 5Y 115 Transformer Vector group: Primary secondary: Yd5 Primary.tertiary YO 1151V2SMVA13V SMVA...
A 150 KVA, 2080/208-V, 3 PHASE, delta-wye transformer with the following: RH 450m2 R 4.5m XH 2.20 Load 120 KVA, 90KW (lagging power factor) at rated terminal voltage of 208V Determine a) b) c) The approximate equivalent circuit referred to the low-voltage side The primary voltage The transformer efficiency Please show the following: Circuit with the values given & found Equations used A 150 KVA, 2080/208-V, 3 PHASE, delta-wye transformer with the following: RH 450m2 R 4.5m XH 2.20 Load...
note: Please write with clear handwriting and show clearly the steps, and please solve it same as the book approach Book: power system analyses and design 6th edition by sarma 7.31 A three-phase circuit breaker has a 15.5-kV rated maximum voltage, 9.0-KA rated short-circuit current, and a 2.50-rated voltage range factor. (a) Determine the symmetrical interrupting capability at 10-kV and 5-kV operating voltages. (b) Can this breaker be safely installed at a three- phase bus where the symmetrical fault current...
Problem 1: A three-phase transformer has the following name plate data: Rated Power Primary voltage Secondary Voltage Excitation reactance Series Impedance 150 MVA 230 kV 32 kV 30 (pu) 0.02+0.15j (pu) The transformer is Y/A connected. Answer the following questions: a) What are the nominal (rated) primary and secondary line currents?| b) What is the nominal value of the Delta-side winding (internal) current? c) What is the secondary to primary winding turn ratio? d) The transformer is supplying 150 MVA...