Single phase transformer please solve as soon as possible... QUESTION 12An 6.6 kV. three-phase star-connected synchronous motor is working at full load and draws a curren of is-200 A at 0.8 p.f. leading. Thearmature resistance is 1.20 and synchronous reactance is 60 per phase. The rotational losses are 3 kW.Determine efficiency of the motor.a. 61%b. 67%c. 83%d. 96%e. 73%f. 88%g. 92%h. 78%

Line voltage Full load current I = 200 A.Power factor = 0.8 ( Leading ).Armature resistance per…

Answered: QUESTION 12 An 6.6 kV, three-phase…

QUESTION 12 An 6.6 kV, three-phase star-co armature resistance is 1.2 Qa Determine efficiency of the me a. 61% b. 67% c. 83% d. 96% e. 73% f. 88% g. 92% h. 78%

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.
What is transformer in detail explain?.
2. What is tap changing of transformer? Why it is needed?
Why we used isolation transformer
Define all the losses in the transformer with the diagram and then define the hysterisis loss with thw graph.
Q5:Choose the correct answer from the given alternatives (answer five only) 1.In an ideal transformer, (a) windings have no resistance (b) core has infinite permeability (d) all of the above. (c) core has no losses 2. The primary and secondary induced e.m.fs. El and E2 in a two-winding transformer are always: (a) equal in magnitude (b) in-phase with each other (c) antiphase with each other (d) determined by load on transformer secondary. 3. In relation to a transformer, the ratio 20 : 1 indicates that (a) there are 20 turns on primary one turn on secondary (b) secondary voltage is 1/20th of primary voltage (c) primary current is 20 times greater than the secondary current. (d) for every 20 turns on primary, there is one turn on secondary. 4. A transformer has negative voltage regulation when its load power factor is: (a) zero (b) lagging. (d) unity (c) leading
High voltage engineering
A single-phase transformer is designed to operate at 2V per turn and turn ratio of 3:1. If the secondary winding is to supply load of 8kVA at 80V. Determine i. the primary supply voltage number of turns on each winding the current in'each winding.
Choose the correct answer from the given alternative: 1. In an ideal transformer, (a) windings have no resistance (c) core has no losses (b) core has infinite permeability (d) all of the above. 2. The primary and secondary induced e.m.fs. El and E2 in a two-winding transformer are always: (a) equal in magnitude (b) in-phase with each other (c) antiphase with each other (d) determined by load on transformer secondary. 3. In relation to a transformer, the ratio 20: 1 indicates that (a) there are 20 turns on primary one turn on secondary (b) secondary voltage is 1/20th of primary voltage (c) primary current is 20 times greater than the secondary current. (d) for every 20 turns on primary, there is one turn on secondary. 4. A transformer has negative voltage regulation when its load power factor is: (a) zero (b) lagging. (d) unity (c) leading 5. During short-circuit test, the iron loss of a transformer is negligible because: (a) the entire input is just sufficient to meet Cu losses only…
5. Write down the equations of a single phase transformer at no-load mode. Give the names of the resistances, reactance, e.m.f.'s, currents and voltages.