2) The following no-load results are obtained at the excitation branch of a 1, 20 kVA, 2400/240 V, 50 Hz transformer: Voltmeter 240 V, Ammeter 2,2 A, Wattmeter 120 W a) Derive the parameters of the excitation branch for the low voltage side and for the high voltage side, b) Show the currents on an equivalent circuit and draw the phasor diagram, c) Calculate the value of the magnetizing inductance,

2) The following no-load results are obtained at the excitation branch of a 1, 20 kVA, 2400/240 V, 50 Hz transformer: Voltmeter 240 V, Ammeter 2,2 A, Wattmeter 120 W a) Derive the parameters of the excitation branch for the low voltage side and for the high voltage side, b) Show the currents on an equivalent circuit and draw the phasor diagram, c) Calculate the value of the magnetizing inductance,

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

Some power devices have bidirectional current capability Select one: O a. True b. False The voltage regulation of the transformer will depend on the load Select one: O a. For mainly inductive or resistive load, the voltage regulation is negative O b. For mainly capacitive, inductive or resistive load, the regulation is positive Oc. For mainly capacitive load, voltage regulation is positive and other loads it is negative. O d. For mainly capacitive load, voltage regulation is negative.
13)This MCQ QUESTION FROM BASIC POWER ELECTRICAL ENGINEERING course.
When the transformer is loaded in a balanced fashion up to its nominal rating (10 MVA), calculate the high side line-to-line phasor voltages (ab, bc, ca). and low side phasor voltages both line-to-line and line-to-neutral (ab, bc, ca, a, b,c). as a reference for calculations the low side A line to neutral voltage is 7620V at an angle of 0 degrees when the transformer is at rated power. The transformer has the following characteristics: V: 138kV delta high side/ 13.2 kV wye low side 9% impedance X/R ratio of 20
a single-phase transformer serves a 7.2kw resistive loadlocated 200 ft from the transformer. each conductor from the transformer to load has an impedence of (0.78+j0.052) ohms per 1000ft. if the voltage at the load terminal is 240v, the magnitude of the voltage (v) at the transformer secondary is most nearly:
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.
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
In part c determine the voltage across Rp and Xp .
In a transformer that has 10 times more turns on the secondary side (side 2) than on the primary side (side 1), the magnitude of the voltage/EMF across the windings on the secondary side, E₂ will be... O a.... 10 times lower than the voltage/emf on the primary side, E₁. O b.... the same as the voltage/emf on the primary side. O c.... always zero regardless of the voltage on the primary side, E₁. O d.... 10 times higher than the voltage/emf on the primary side, E₁.
Topic- basic & const.