الامتحان العملي لمادة المكائن)الفصل الاول( Q1) Draw the graph of output power versus efficiency of transformer? Q2) Draw the diagram for impedance test on transformer? Q3) What are the elements finding from no-load test of single phase transformer? Q4) Why Transformer Rating in kVA? Q5) How can eddy current loss be minimized?

الامتحان العملي لمادة المكائن)الفصل الاول( Q1) Draw the graph of output power versus efficiency of transformer? Q2) Draw the diagram for impedance test on transformer? Q3) What are the elements finding from no-load test of single phase transformer? Q4) Why Transformer Rating in kVA? Q5) How can eddy current loss be minimized?

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

I need answer within 20 minutes please please with my best wishes
1- Why When a transformer is loaded with a constant primary voltage, the secondary voltage decreases? 2- What is mean by regulation 'down'? 3- What is mean by regulation 'up'? 4- Why is the lesser voltage regulation value, the better the transformer? 5- How we can to keep the output voltage of transformer constant? 6- What are the losses in transformer? 7- Why the efficiency of transformer depends on power factor? 8- at any volt-ampere load, when Efficiency will be maximum? 9- What is the condition for maximum Efficiency of transformer?
Q3) What are the elements finding from no-load test of single phase transformer? Q4) Why Transformer Rating in kVA? Q5) How can eddy current loss be minimized?
C2 (i). Draw the Schematic diagram and explain the working of LVDT and write any two applications of it. (ii) A 12 kVA, 56HZ, single-phase transformer has a turns ratio of 18 : 2 and is supplied from a 2.5 kV supply. Neglecting losses, determine (a) the secondary voltage, (b) the full load primary current, (c) the maximum flux and (d) the minimum value of load resistance which can be connected across the secondary winding without the kVA rating being exceeded secondary voltage primary current maximum flux secondary resistance
A 220-kVA transformer with .2% resistance and 4% reactance and another 120-kVA transformer with 3% reactance and .15% resistance with the same voltage ratio. the phase angle is 33 degree and the total load .25 MVA. How much the load of each transformer. what are the load currents of each transformer if a1 =20 and a2=25?
Question 4
3) A three-phase transformer of 60 kVA (three-phase power), 13200/480 V (line A line) in delta-strella connection has a resistance of 0.02 PU and a reactance of 0.08 PU. For this transformer, calculate: a) The voltage regulation at full load and F.P. 0.85 in delay. (b) The regulation of voltage voltage to full cargo and F.P. Unitarian. c) The voltage regulation at full load and F.P. 0.85 in advance.
Transformers are widely used for industrial and residential applications. In long distance electrical power transportation, they play importants role for efficiency and safety improvement by increasing and decreasing the voltage levels during transmission. However, some aspect in using of the transformer need to be considered as they can have bad effect to the enviromental. Please discuss the potential risks of the transformer to the environment and the important actions to be taken to reduce the risk for environmental sustainability.
A 10 MVA three phase load is to be served by a three phase transformer at aline voltage of 13.8 kV. The supply side voltage(line-line) is 138 kV. Varioussingle phase transformers are available in the warehouse but all havewindings with voltage ratings under 100 kV and current ratings under 250 A.Is it possible to serve the load using only three single phase transformers? Ifso, specify the three phase connections and the low and high voltage ratingsof the single phase transformers.
It is bartleybe's policy that if questions objective than you need to solve at least first 3 questions.
In a single phase transformer when all parameter is shifted to primary side value of primary side resistance is 0.5 ohm and resistance which is shifted from secondary to primary is also 0.5 ohm. If full load current in primary side is 20(A) what is total copper loss in transformer.