2. A 1-kVA three phase transformer has 500 turns on the primary and 100 turns on the secondary winding, the transformer connection is shown in the following figure, if the transformer supplied with a 400-V, 50-Hz supply, calculate the following: a) Primary rated line current; b) Secondary line voltage; c) Secondary rated phase current. A в Primary side H2 H1 H2 H1 Hz H1 www X2 X1 X2 X1 Secondary side Fig.1

2. A 1-kVA three phase transformer has 500 turns on the primary and 100 turns on the secondary winding, the transformer connection is shown in the following figure, if the transformer supplied with a 400-V, 50-Hz supply, calculate the following: a) Primary rated line current; b) Secondary line voltage; c) Secondary rated phase current. A в Primary side H2 H1 H2 H1 Hz H1 www X2 X1 X2 X1 Secondary side Fig.1

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

When secondary is fully loaded, transformer regulation is less than 1 percent. It shows that it is a good transformer. T or F
How does the coupling factor affect the primary and secondary voltages? For example if the turns ratio in my transformer is 1:2 and the Vin is 10V, the voltage on the primary side is 10V and the voltage on the secondary side is 20V when the coupling factor (k) is 1. What will the primary and secondary voltages be if the coupling factor becomes 0.5?
A single-phase transformer has the following resistances: R1 = 3 ohms, X1 = 6 ohms, R2 = 6 ohms and X2 = 10 ohms. Find the turns ratio (N1/N2) if the sum of the equivalent resistances (Re1 + Re2) is 46.98 ohms.
Q/A single-phase transformer with a capacity of 100 kVA and a voltage of 2000/400 and the equivalent circuit elements are: As follows R1 = 0.1 02 x1 = 0.2 2 R2 = 0.25 2 X2 = 0.75 2 RO = 500 XO = 150 Q and feeds a load of 90 kVA at a voltage of 2000 volts and a power factor of 8.0 in delay. Calculate voltage and current Primary Royl ww JX eql
Help me to solve this problem step by step. Don't copy from Chegg else I'll dislike.
1. A 1000-VA 350/140-V transformer has been tested to determine its equivalent circuit. The results of the tests are shown below. Open-circuit test Short-circuit test Voc = 235 V Vsc = 20.1 V loc = 0.57 A Isc = 9.6 A Poc = 34.3 w Psc = 42.7 W All data given were taken from the primary side of the transformer. Evaluate the equivalent circuit of this transformer referred to the low-voltage side of the transformer.
4. Using L equivalent circuit in a 220/100 V phase transformer with equivalent circuit parameters; R1 = 0.2 ohm, R2 = 0.025 ohm, X1 = 0.3 ohm, X2 = 0.075 ohm, Xm = 5k ohm, Rre = 45k ohm, a.) Draw the approximate equivalent circuit and reduce the secondary circuit parameters to primary. b.) Since the reduced value of the load connected to the secondary circuit to the primary is given as 44.72 + j32.01 ohms, calculate the magnetization current, primary current, load current, primary and secondary copper losses by using the approximate equivalent circuit. ( please solve all the options,thanks..)
9. Electrical transformer is shown on the figure bellow. Secondary winding Ng turns Primary winding N, tums Magnetic Flux. Primary Secondary current current Primary votage Secondary valtage Transformer Core The ratio between the voltages at the secondary U, and the primary Up windings is equal to: U. b) U, N U а) U, N. U, , c) = 1 N, N U, P
Q4 Figure Q4 below shows the simplified per phase equivalent circuit of a 220 V star connected transformer. The parameters for the equivalent circuit is listed as follows: R1= 1.780 Ohm, R2 = 2.400 Ohm, Re = 0 Xi = 1.255 Ohm, X2 = 0.410 Ohm, XM = 15.000 Ohm Stray loss = 200 W, Core loss = 100 W RI jXi I2 jX2 IM Rc jXm R2 Figure Q4 (a) Find the line current of the transformer. Find the copper loss associated with the primary winding and secondary winding. (b) (c) Calculate the efficiency of the 3 phase transformer.