Example 19. Starting from the ideal transformer, obtain the approximate equivalentcircuit of a commercial transformer in which all the constants are lumped andrepresented on one side. A 1-phase transformer has a turn ratio of 6. The resistanceand reactance of primary winding are 0.9 Q and 5 Q respectively and those of thesecondary are 0.03 N and 0.13 N respectively. If 330 -V at 50-Hz be applied to thehigh voltage winding with the low-voltage winding short circuited, find the current inthe low-voltage winding and its power factor. Neglect magnetizing current.

The Turns ratio of the transformer = 6 The resistance and Reactance on the primary side are R1 =…

Example 19. Starting from the ideal transformer, obtain the approximate equivalent circuit of a commercial transformer in which all the constants are lumped and represented on one side. A 1-phase transformer has a turn ratio of 6. The resistance and reactance of primary winding are 0.9 2 and 5 2 respectively and those of the secondary are 0.03 N and 0.13 Q respectively. If 330 -V at 50-Hz be applied to the high voltage winding with the low-voltage winding short circuited, find the current in the low-voltage winding and its power factor. Neglect magnetizing current.

Example 19. Starting from the ideal transformer, obtain the approximate equivalent circuit of a commercial transformer in which all the constants are lumped and represented on one side. A 1-phase transformer has a turn ratio of 6. The resistance and reactance of primary winding are 0.9 2 and 5 2 respectively and those of the secondary are 0.03 N and 0.13 Q respectively. If 330 -V at 50-Hz be applied to the high voltage winding with the low-voltage winding short circuited, find the current in the low-voltage winding and its power factor. Neglect magnetizing current.

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

Q2/3-phase.E.W.C. R using center tap transformer supplies highly inductive load, find: 1. The average load voltage with and without FWD and discusses these cases. 2-lf firing angle equal to 45°, the supply voltage is240v, transformer ratio is (2/1). Calculate the DC current& voltage of this case. 3- Draw all waveforms diagram. 4- what are the difference between the type of connection (Delta or Star).
Answer in short please i will like....
.
3. An ideal transformer with a 500 turns primary and 125 turns secondary windings delivers 400W to a 40 load. The resistance of the primary windings is 16O. Find the primary current and voltage
During the load test of single-phase transformer, when the secondary terminal voltage increases, the regulation of the transformer will ................?(complete)
- A Transformer has primary windings as Np = 750 and secondary windings as Ns = 125. Its secondary voltage is Vs = 36V and output power of the transformer is PN= 3200W. The value of loses powers are Pcu = 43W and Pfe = 29 W. The resistance of loads are RLI = 1,250 and R12 = 0,88Q. (Pcu and PFE will be considered to be approximately the same in different load values.) Determine the following values in the circuit: Primary winding N, turns Secondary winding Ng turns Primary current Magnetic Flux, Secondary IsL s current ISL1 'Isl2 Primary voltage Secondary voltage RL1 R12 Transformer Core (a) the primary voltage Vr, (b) the secondary load currents ISLı and Isl2 if the transformer is rated at RLI and R12, (c) the resulting secondary power PSL, (d) the resulting primary power PPl, (e) the primary load current IPL, (f) efficiency nL
Derive the following
18. An ideal 50-Hz, core-type transformer has 100 primary-turns and 200 secondary- turns. The primary rated voltage is 220 V. If the maximum permissible flux density is 1.2 T, what should be the cross-sectional area ? voltage, and (b) the primary current in complex form with reference to the secondary voltage vector when secondary delivers a current of 8 A at a lagging power factor of 0.8. Also, find (a) the secondary [Ans. : 8.26x10°m² ;(a) 440 V; (b) 16Z143.1° A ]
Efficiency at full-load and half the full-load at 0.8 p.f. lagging current. Equivalent reactance referred to primary & referred to secondary..........ohm , ..........ohm Equivalent resistance referred to primary & referred to secondary..........ohm , ..........ohm Regulation of transformer at 0.5 p.f. lagging current The magnetizing current and reactance component of no-load are.........amper , .........ohm The working current and resistance component of no-load are.........amper , .........ohm *
1. A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV side of 0.01 + j0.09 Q. This transformer has a core loss of 100 W at rated voltage. When rated current is applied to the 2400-V winding, the exciting current in that winding is found to be 0.2 A. a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the efficiency of this transformer at full load, 0.8 power factor lagging. c. Ifstandard open-circuit and tests were performed on this transformer, what would be the measured values of these tests?
figure the S-parameters for an ideal transformer with turn ratio N = N1:N2 where N1 is the no.of turns of the primary winding and N2 is the no. of turns of the secondary winding.
3. An ideal transformer with a 500 turns primary and 125 turns secondary windings delivers 400W to a 40 load. The resistance of the primary windings is 160. Find the primary current and voltage.