QZIA/ What are the conditions for satisfying parallel operation of single phase transformer?Deduce an expression for the load shared by the two transformers in parallel when thetransformers have equal voltage ratio? Prove your answer.B/ A 50 KVA, 2300/230 V, 60 Hz transformer has a high voltage winding resistance of0.652 and a low-voltage winding resistance of 0.0065 2. Laboratory tests showed thefollowing results:Open circuit test: V = 230 V, I =5.7A, P 190 WShort circuit test: V-41.5 V, I-21.7 A, P-No watmeter was used.(a) Compute the value of prinàry voltaga needed to give rated secondary voltage when thetransformer is connected as a step-up onc and is delivering 50 KVA at a power factor of 0.8lagging. (b) Compute the efficiency under conditions of part (a).18

Answered: Image /qna-images/answer/c05551b0-3c49-44d5-8e31-44c5779bec68.jpg

Q2/A/ What are the conditions for satisfving parallel operation of single phase transformer? Deduce an expression for the load shared by the two transformers in parallel when the transformers have equal voltage ratio? Prove your answer. B/ A 50 KVA 0300 030 hi

Q2/A/ What are the conditions for satisfving parallel operation of single phase transformer? Deduce an expression for the load shared by the two transformers in parallel when the transformers have equal voltage ratio? Prove your answer. B/ A 50 KVA 0300 030 hi

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...

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A 50Hz, single phase transformer has a ratio of N2:N1 = 0.2. On full-load, the secondary current is 200A. The resistance and reactance of the primary winding are 0.8 ohm and 4 ohm respectively. The corresponding values for the secondary winding are 0.04 ohm and 0.1 ohm. If the secondary is short circuited, what voltage must be applied to the primary to produce full-load current? What will be the copper loss?
In load test on single phase transformer, the secondary voltage decreases with increase in load. Select one: O True False
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Is it ok if we parallel different KVA capacities of transformer as long we satisfy major requirements? Why or why not?
Q2/A/ What are the conditions for satisfying parallel operation of single phase transformer? Deduce an expression for the load shared by the two transformers in parallel when the transformers have equal voltage ratio? Prove your answer. B/ A 50 KVA, 2300/230 V, 60 11z transformer has a high voltage winding resistance of 0.650 and a low-voltage winding resistance of 0.0065 2. Laboratory tests showed the following results: Open circuit test: V = = 230 V, I =5.7A, P = 190 W Short circuit test: V-41.5 V, I-21.7 A, P-No wattmeter was used. 18 (2) Compute the value of primary voltage needed to give rated secondary voltage when the transformer is connected as a step-up one and is delivering 50 KVA at a power factor of 0.8 lagging. (b) Compute the efficiency under conditions of part (a).
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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?
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The required no-load voltage ratio in a 150 kVA single-phase 50 Hz core-type, two-winding transformer is 5000/250 V. Calculate the load kVA for maximum efficiency. The full-load I2R loss is 1800 W and the core loss is 1500 W. Round your answer off to the nearest whole number
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