Protection of transformers depend on size of transformer size of cables number of circuit breakers size of load The secondary of the booster transformer is connected in series with the line True False Merz-Price circulating current principle is more suitable for - than transformers, lines lines, generators transformers, generators generators, transformers lines, transformers generators, lines

Protection of transformers depend on size of transformer size of cables number of circuit breakers size of load The secondary of the booster transformer is connected in series with the line True False Merz-Price circulating current principle is more suitable for - than transformers, lines lines, generators transformers, generators generators, transformers lines, transformers generators, lines

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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Similar questions

The number of turns on the primary and secondary windings of a 1- transformer are 380 and 40 respectively. If the primary is connected to a 2.2 kV, 50-Hz supply, then the secondary voltage on no-load is
what are the advantages and Disadvantages Connecting transformers 3 Phase between (delta to Star)
Two transformers are to be operated in parallel such that they share load in proportion to their KVA rating. The rating of the first transformer is 500 kVA and its pu leakage impedance is 0.05 pu. If the rating of second transformer is 250 kVA, then its pu leakage impedance is A 0.20 B 0.10 C 0.05 D 0.025
2- Determine the number of turns per-phase in each winding of a 3-phase transformer with a ratio of 20000/2000v. to work on a 50Hz network. The high-voltage winding is delta connected and the low-voltage is star-connected. Each core has a gross sectional area of 560 cm². Assume a flux density of about 1.2 wb/m². [1490/86]
6-Writ the procedure of no load test of Single phase transformer and draw the connection diagram of this test
The capacity of each transformer in a 3-phase A/A transformer bank is 250 kVA. If a balanced star load is connected across it and is taking 750 kVA. Now due to some reasons, the transformer bank starts operating as open delta connection. The percentage overloading on the bank in open delta connection is
A 120 kVA, 1350/330 V single phase transformer has the following parameters: R1 = 0.34 Q, X1 = 0.59 0, R2 = 0.014 Q, X1 = 0.029 Q, Rc = 380 and Xm = 320 Q. The no load current is 4.7 A at a power factor of 0.36 lagging and the no load losses are 4.6 kW. For a full load and 0.9 power factor lagging with 300 V load terminal voltage, determine (a) equivalent circuit parameters referred to primary side, (b) percentage regulation and (c) full load efficiency. O:01 AM
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
4. 100 kVA, 6800-240 V, 50 Hz single phase step down transformer has the following parameters: RLs-0.008Ω RHs-2.6Ω Ri-HS-500 0Ω XLS-0.015Ω XHs=5.22 Xm,HS=88002 Transformer is delivering 80% of rated load at rated voltage and 0.95 lagging power factor. Determine the following: a) The equivalent impedance of the transformer referred to primary. b) Input impedance of the combined transformer and load. c) Actual input voltage at HV side. d) Input impedance if load is disconnected. e) Exciting current at no load.
A9 The purpose of the short circuit test of the transformer is to measure the copper losses. (TRUE/FALSE)
Under short circuit test, the short circuit voltage of transformer is O a. Equal to the rated voltage ОБ. O b. (3-5) % V rated O c. Maximum O d. Zero