3- A 5 kVA 200/1000 V, 50 Hz, single-phase transformer gave the following test results:O.C. Test (L.V. Side): 200 V, 1.2 A, 90 WS.C. Test (H.V. Side): 50 V, 5A, 110 WCalculate the parameters of the equivalent circuit referred to the L.V. side.Ans:- (Ro 444 £2, Xo = 180.2 2, Ro1 = 0.176 2, X01 = 0.362)=

Answered: 3- A 5 kVA 200/1000 V, 50 Hz,…

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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Answer only please The resistance of a transformer winding is 0.25 ohm at 25oC. When operating at full load, the temperature of the winding is 75oC. The temperature coefficient of resistance for copper at 0oC is 0.00427 per oC. What is the winding resistance at full load? a. 0.512 ohm b. 0.315 ohm c. 0.298 ohm d. 0.271 ohm
Flag this question for future reference What is the test that can be conducted in the laboratory to understand the transformer impedance drops are dependent on the load current with a variation in the secondary voltage? O a. Direct Load Test O b. Open Circuit Test OC. Voltage Ratio Test O d. Polarity Test
A Buck converter has an output power of 1950 Watts, and a source voltage of 1000V (the constant DC voltage). Using the information provided and the "“transformer-like" relationships derived in class, estimate the corresponding load currents for the following duty ratios: a) D=0.35 b) D=0.9 c) D=0.5
quesntion in photo plz
3.6. A 60-kVA, 4800/2400-V single-phase transformer gave the following test results: 1. Rated voltage is applied to the low voltage winding and the high volt- age winding is open-circuited. Under this condition, the current into the low voltage winding is 2.4 A and the power taken from the 2400 V source is 3456 W. 2. A reduced voltage of 1250 V is applied to the high voltage winding and the low voltage winding is short-circuited. Under this condition, the current flowing into the high voltage winding is 12.5 A and the power taken from the 1250 V source is 4375 W. (a) Determine parameters of the equivalent circuit referred to the high volt- age side. (b) Determine voltage regulation and efficiency when transformer is operat- ing at full-load, 0.8 power factor lagging, and a terminal voltage of 2400 V. (c) What is the load kVA for maximum efficiency and the maximum effi- ciency at 0.8 power factor? (d) Determine the efficiency when transformer is operating at 3/4 full-load, 0.8 power…
Example 2-2. The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60-Hz transformer are to be determined. The open-circuit test and the short-circuit test were performed on the primary side of the transformer, and the following data were taken: Open-circuit test (on primary) Short-circuit test (on primary) Voc = 8000 V Vsc = 489 V loc = 0.214 A Isc = 2.5 A Voc = 400 W Ps = 240 W
A 100/S00 V. 1 KVA, 50 Hz transformer was put through open and short-circuit tests to find its internal parameters. The test conditions and derived parameters are as follows Open circut test: The high voltage side terminals were open. The low voltäge side was connected to 10020ª, 50 Hz supply. The low voltage side current was measured as 50245º MA. Short-circuit test The high voltage side terminals were short-circuited. The low voltage side was connected to a variable voltage supply (50 Hz). A full load current of 102-30° A was achieved when the variable voltage supply was at 820° V. The transformer was then put to operation by connecting a load of 400230° 2 to the high voltage side (secondary) while applying a primary voltage of 10020º V. Calculate the primary current (the current drawn from the power supply).
The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60-Hz transformer are to be determined. The open-circuit test and the short- circuit test were performed on the primary side of the transformer, and the following data were taken: Open-circuit test (on primary) Short-circuit test (on primary) 8000 V V= 489 V I0.214 A 2.5 A P= 400 W P= 240 W Find the impedances of the approximate equivalent circuit referred to the primary side, and sketch the circuit.
TTR 300 , What is the method of connecting the device to the transformer ?

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