B- the instrument readings obtained from open and short-circuit tests on 10kVA, 450/120V, 50Hz transformer are: O.C. test: V₁ = 120V; I₁= 4.2A; W₁ = 80W; W₁ and I were read on the low-voltage side. S.C. test: V₁ = 8.5V; 1₁-20A; W₁ = 100W with low voltage winding short-circuited compute: 1- the equivalent circuit constants referred to high voltage side. 2- efficiency and voltage regulation for full-load at 0.8 P.F. lagging. 3- the voltage to be applied to the high voltage side on full-load at 0.8 power factor lag when the secondary load voltage is 120V. Luoltage:

B- the instrument readings obtained from open and short-circuit tests on 10kVA, 450/120V, 50Hz transformer are: O.C. test: V₁ = 120V; I₁= 4.2A; W₁ = 80W; W₁ and I were read on the low-voltage side. S.C. test: V₁ = 8.5V; 1₁-20A; W₁ = 100W with low voltage winding short-circuited compute: 1- the equivalent circuit constants referred to high voltage side. 2- efficiency and voltage regulation for full-load at 0.8 P.F. lagging. 3- the voltage to be applied to the high voltage side on full-load at 0.8 power factor lag when the secondary load voltage is 120V. Luoltage:

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

Triplen harmonics and their effect on the transformer winding if the transformer is having Y-Δ and Y-Y configuration.
925 3- The approximate equivalent circut of is to be determined. The open-circuit at 0 20KVA, 8000/240 V 60 Hz transformar short-circut tests that were performed transformer. primary side gave the following results. Open - Circut Test V₁x = 8000 Iloc=0-214 A Ploc = 400 W Short-Circuit Test |Visc = 489V 5₁s = 2.5A Pisc = 240k/ al Find the components of the magnetising branch i referred to the primary side b) Find the Components of the equivalent series impedence referred to the primary side. 119 210 2 15 16
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.
TYDDIAD I Q4-(A)-draw the phasor diagram of the transformer at full load with inductive load
Thanks., and all the best
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.
iers? Explain. REVIEW QUESTIONS 1. Show how you would parallel connect the transformers to the source and the load in Figure 6-2. Windings 1 to 2 and 3 to 4 are rated for 2.4 kV ac and windings 5 to 6 and 7 to 8 are rated for 400 V ac. C. SOURCE R 2400V Figure 6-2. 2. The efficiency of a transformer which supplies a pure capacitive load is
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..)
A single phase 240/120V transformer has the following parameters. R = 10, R = 0.5N, X = 62, X, = 20, R, = 5002, X, =1.5k2 A load of 102 at 0.8 pf lagging is connected across the low voltage terminals of the transformer. The voltage measured across the load side is 110 V. Compute the following: %3D %3D a. The load voltage referred to the primary side. b. The currents of the primary and secondary windings c. The source voltage d. The voltage regulation e. The load power f. The efficiency of the transformer.
A 9KVA, 360V/180V transformer has been tested to determine its equivalent circuit. The open circuit test data when high voltage side is open: loc=1.8A, Poc=200W. The short circuit test data when low voltage side is short circuited: Vsc=40V, Psc-230W. Use approximate equivalent circuit. Calculate equivalent resistance primary value. 0.736 0.023 0.368 0.092 0.184