Q.1: The following data refer to a single-phase transformer: Turn ratio (1:5), R1=0.24 n, X=1 N, R2=6 N, X2=25 N. The no-load current = 10A leading the flux () by 25°. The primary current is 100A and the input voltage is 230V and power input factor 0.9 leading. Determine by aid of a vector diagram, (i) the load voltage and current, (ii) the load power factor, (iii) the efficiency.

Q.1: The following data refer to a single-phase transformer: Turn ratio (1:5), R1=0.24 n, X=1 N, R2=6 N, X2=25 N. The no-load current = 10A leading the flux () by 25°. The primary current is 100A and the input voltage is 230V and power input factor 0.9 leading. Determine by aid of a vector diagram, (i) the load voltage and current, (ii) the load power factor, (iii) the efficiency.

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

Ex1 : An 8 pole armature is wound with 420 conductors , the flux and the speed are each that the average e.m.f. generated in each conductor is 2.2 v and conductor is capable of carrying a fun load current of 100 A . calculate the terminal voltage on no load, the output current on full load , and total power generated on full load when the armature as lap and wave winding.
2-The Magneto motive force of a steel-ring of 25 cm mean diameter- If it is wound uniformly with 700 turns of wire carrying a current of 2 amp. a-1500 AT b-2000 AT c-1800 AT d-1400 AT 3-The self-inductance cocfficient of a d.c. electromagnet- whose field winding is wound with 960 turns and has resistance of 50 2 when the exciting voltages is 230 V and the magnetic flux linking the coil is 0.005 Wb. a-10.43mH b-10.43H c-1.043H d-0.1043 H 4- An iron rod, 2 cm in diameter and 20 cm long is bent into a closed ring and is wound with 3000 turns of wire. It is found that when a current of 0.5 A is passed through this coil, the flux density in the coil is 0.5 Wb/m2. The magnetic field intensity of it -- a-300AT/m b-30AT/m c-3000AT/m d-300AT/cm
The frequency of voltage generated in SG depends on: Select one:a. Number of polesb. number of poles and speed rotationc. Field currentd. Rotor speede.Number of poles, speed rotation and type of winding
A magnetic circuit has a m.m.f. of 400 AT and a reluctance of 2 x 105 AT/Wb. The magnetic flux in the magnetic circuit is_ mWb. 6 X
A short shunt compound generator supplies a load of 20 kW at 500 V. The armature, series and shunt field resistance are 0.10 ohm, 0.05 ohm, and 100 ohms respectively. Find the power developed in the armature. Choices: 24600 W 20500 W 22800 W 25400 W
A ferromagnetic core is shown below. The depth of the core is 5 cm. The other dimensions of the core are as shown in the figure. Find the value of the current that will produce a flux of 0.003 Wb. With this current, what is the flux density at the top of the core? What is the flux density at the right side of the core? Assume that the relative permeability of the core is 1000. 1. - 10 cm--- - 20 cm - 15 cm 500 tums 15 cm 15 cm [1.21 A, 0.4 T, 1.2 T]
Consider a ferromagnetic ring (nucleus) that has a mean circumference of 40 cm, 300coiled copper turns and a sectional area of 5 cm2. A current of 2 is appliedA to winding, producing a flux of 1.5 mWb.Determine the permeability of the core material.Determine the relative permeability of the core material.If the ferromagnetic ring has an air gap of 2 mm. Find the required MMFso that the flux density in the gap is 0.5 T.
A docs.google.com/f 0 :D welding purpose is a shunt generator Indicate whether the following - * statement are true or false False True In a dc machine for the same value of Z, N, O armatūre, e.m.f. is more with wave winding than with lap winding
Hw1-6: Derive the equation for rms core flux of ideal ac magnetic circuit using Ohm's of magnetic circuits. Explain the result.
A magnetic ring has reluctance of 1.675 × 10⁰ AT weber. The flux to be produced by the coil is 800 x 10 webers, then the AT required for the m.m.f. will be
A three-legged ferromagnetic magnetic core with the coil dimensions shown below has a of 500 turns wrapped around the right leg. The core relative permeability is 4000 times, The magnetic flux in the left leg of the core has a value of 40 mWb. The center leg has an air gap of 0.8 mm, its fringing effect is neglected. Draw the corresponding magnetic circuit and find the values of the coil current i, and the flux in each leg of the core. cm 10 cm, 25cm 25 cm 10 cm 10 cm 25 cm 0.8 mm 500 turns 10 cm Core depth = 10 cm
22/ According to Lenz’s law negative sign indicates that induced EMF opposes the change in flux linkages. Select one: True False