Draw the equivalent circuit of a 10 KVA, 1950 / 420 V 1-phase transformer with R1=0.25 ohms, R2=0.03 ohms, X1=1.9 ohms and X2=0.07 ohms. Also calculate the equivalent resistance and reactance referred to primary winding. (1+2 marks) Equivalent resistance Equivalent reactance

Draw the equivalent circuit of a 10 KVA, 1950 / 420 V 1-phase transformer with R1=0.25 ohms, R2=0.03 ohms, X1=1.9 ohms and X2=0.07 ohms. Also calculate the equivalent resistance and reactance referred to primary winding. (1+2 marks) Equivalent resistance Equivalent reactance

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.53P: The ratings of a three-phase, three-winding transformer are Primary: Y connected, 66kV,15MVA...

See similar textbooks

Related questions

Q: Question 2: Determine the below parameters for the given transformer while switch is ON and OFF.…

Q: In an experiment for determining the breakdown strength of transformer oil with standard electrodes,…

Q: The operated distfibution transformer has constant iron * and copper losses? False True

A: the operated distribution transformer has constant iron and copper losses true or false

Q: Q1) I. A 100 kVA, three-phase ideal transformer has 4950 turns on the pr imary and 180 turns on the…

A: As per Bartleby guidelines we are allowed to solve only one question with maximum three subparts,…

Q: Two single-phase 11,000/400 V transformers have kVA ratings of 200 kVA and 100 kVA respectively. The…

Q: TRUE or FALSE: If a 13800 / 480-V, three-phase transformer is connected wye-delta, then the turns…

Q: The nominal specifications seen on the nameplate of a single-phase transformer are 600 MVA, 95/500…

Q: A single phase two winding transformer is rated 20 KVA, 480/120 V at 50 HZ. The equivalent leakage…

Q: Q1-A 3-phase step down transformer 1200 KVA , 11000/2200 V, 50 Hz .The resistance /phase and leakage…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: Question 10 The burden of current transformer is specified as the ratio of primary to secondary…

A: 10) Burden of current transformer

Q: QUESTION FOUR A single-phase 1kVA, 440/110V, 50 Hz transformer has the following equivalent circuit…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: A 3300/300 V single phase transformer gives 0.6 A and 60 W as ammeter and wattmeter readings when…

A: Given, at No load Ammeter reads, Io=0.6 A Wattmeter reads, Poc=60 W Supply given to the low voltage…

Q: A core type transformer operates on 405/ 235 volt, 50 Hz supply. If the cross-sectional area of the…

Q: Three single-phase, 50 kVA, 2300/230 V, 50 Hz transformers are connected to form a 3-phase,…

A: According to the question we have to find the value of (a) the transformer winding currents. (b) the…

Q: 3.16 A single-phase, 50-k VA, 2400/240-V, 60-Hz distribution transformer has the following…

A: It is given that:

Q: A single-phase transformer has a voltage ratio on open circuit of 7900/660 V. The primary and…

A: Transformer: It is a static device that is used to step up and step down the voltages.

Q: 2- A 100 kVA,3-phase, 50 Hz, 6,600/400 V transformer is A -connected on HV side and Y- connected on…

Q: A short circuit test was performed upon a 10-kVA, 2300/230-volt transformer with the following…

A: Short circuit test is performed on high voltage side with low voltage side short circuited. Here…

Q: Draw the equivalent circuit for a 3000/400-V, l-phase transformer on which the following test…

A: Step 1:Primary voltage V1 =3000Vseconadary voltage V2=400VOpen circuit test:Voc=3000v , I0c =0.5A…

Q: C2 (1). Draw the Schematic diagram and explain the working of LVDT and write any two applications of…

A: C2 (i) LVDT - It stands for the Linear Variable Differential Transformer. It is a inductive…

Q: A three – phase transformer has rating of 60 MVA, 220 kV (star) – 33 kV (delta) with leakage…

A: The solution is given below

Q: A single phase 200V/1005V, 53Hz transformer has a net core area of 0.050 m2 and the maximum flux…

Q: Two 11,000/2,200-V, 1-phase transformers are connected in parallel to supply a total load of 200 at…

A: (1) (a) Current supplied by each transformer The equivalent circuit diagram of two transformers…

Q: A 1040/208 volt, 60 Hz, 15 KVA transformer has 200 turns on the high side, Calculate: a) Number of…

A: As per the honor code I will solve first three parts. Kindly repost the other questions again. THANK…

Q: Ql-phase step down transformer 1250 KVA, 11000/2200 V, 50 Hz .The resistance /phase and leakage…

Q: Ql-phase step down transformer 1250 KVA , 11000/2200 V, 50 Hz .The resistance /phase and leakage…

A: (i) The per-phase secondary voltage in the star-connected secondary winding can be calculated as,

Q: QA/ A 50 KVA, 2300/230 V, 60 Hz transformer has a high voltage winding resistance of 0.65 W and a…

A: Given : P0 = 50 kVA, V1 = 2300V , V2 = 230V, f = 60 Hz R1 = 0.65 Ω (H.V. Side), R2 = 0.0065Ω…

Q: A 25 KVA, single-phase ideal transformer has 250 turns on the primary and 40 turns on the secondary…

A: Current=Volta ampere (VA)Voltage (V). secondary current=primary current× prinary winding…

Q: A 10 kVA, 2300/230-V single-phase transformer has the following resistances and reactances. Find the…

Q: When conducting no-load test on a given single- phase transformer, the following test data were…

A: Given that (i) Formula for turn ratio is given by

Q: 2. The following information is given for two transformers connected in parallel: Transformer 1…

A: We are authorized to answer one question at a time since you have not mentioned which question you…

Q: Ql-phase step down transformer 1250 KVA, 11000/2200 V, 50 Hz .The resistance /phase and leakage…

Q: A 200V/100v,50HZ transformer has magnetizing reactance Xm=400ohms and resistance representing core…

Q: Q2. A 25-kVA, 2300:230-volt transformer is subjected to open- and short-circuit tests. The…

A: Transformer: Transformer is a static electrical device which transfers power from one circuit to…

Q: C2 (i). Draw the Schematic diagram and explain the working of LVDT and write any two applications of…

A: LVDT It is Linear variable differential transformer It is a passive type sensor. It is an…

Q: 2. The following information is given for two transformers connected in parallel: Transformer 1…

Q: The following values were seen in the measurements made separately by the primary and secondary of…

A: A transformer , the primary and secondary of a 220/270 V phase transformer. R1 = 4 ohms, X1 = 4.6…

Q: Ql-phase step down transformer 1250 KVA, 10002200 V, 50 Hz The resistance /phase and leakage…

Q: The following test results of a single-phase step-down transformer which were measured at primary…

A: 7. It is given that: Open-circuit test: VOC=415 V; IOC=0.22 A; POC=7.64 W; Vo=240 VShort-circuit…

Q: A 25kVA, 2400/240, 60Hz single phase transformer gave the following short circuit test result Vsc =…

A: resistance referred to primary side = short circuit power short circuit current2

Q: Ql-phase step down transformer 1250 KVA,11000/2200 V, 50 Hz .The resistance /phase and leakage…

Q: Ql-phase step down transformer 1250 KVA, 11000/2200 V, 50 Hz . The resistance /phase and leakage…

A: Given values are =

Q: A 5 KVA 220/110 transformer has the following parameters. Ri -0.25Ω , Χ -0.75Ω, Reι -720 Ω , Xm1-180…

Q: A 30 KVA , 2400/120 V ,50hz, transformer a high voltage winding resistance of 0.1 ohm and leakage…

A: In this question, We need to determine the equivalent resistance and impedance as referred to both…

Q: A 10 kVA, 2400/240-V single-phase transformer has the following resistances and reactances. Find the…

Q: A 15-KVA,2400/240-V transformer is to be tested to determine its excitation branch components,its…

A: Given transformer 15-KVA, 2400/240-v Test data from primary side open circuit testVoc=2400v,Ioc=0.25…

Q: A short-circuit test was performed upon a 10-kVA 2,300/230-volt transformer with the following…

Q: Draw the equivalent circuit of a 10 KVA, 1940 / 490 V 1-phase transformer with R1=0.35 ohms,…

A: Equivalant resistance seen from primary =primary winding resistance +secondary winding resistance…

Q: A single-phase, 240 kVA, 240/4800 V transformer has the parameters shown in Figure Q5. Determine I…

Concept explainers

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.

Question

100%

Draw the equivalent circuit of a 10 KVA, 1950/ 420
V 1-phase transformer with R1=0.25 ohms,
R2=0.03 ohms, X1=1.9 ohms and X2=0.07 ohms.
Also calculate the equivalent resistance and
reactance referred to primary winding. (1+2
marks)
Equivalent resistance
Equivalent reactance

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding short-circuited, rated current flows when the voltage applied to the primary is 5.5 kV. The power input is read as 100 kW. Determine Req1andXeq1 in ohms referred to the high-voltage winding.
An open-delta three-phase transformer system has one transformer center-tapped to provide a neutral for single-phase voltages. If the voltage from line to center tap is 277 V, what is the high-leg voltage?
The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA Secondary (2): Y connected, 13.2kV,10MVA Tertiary (3): A connected, 2.3kV,5MVA Neglecting winding resistances and exciting current, the per-unit leakage reactances are X12=0.08 on a 15-MVA,66-kV base X13=0.10 on a 15-MVA,66-kV base X23=0.09 on a 10-MVA,13.2-kV base (a) Determine the per-unit reactances X1,X2,X3 of the equivalent circuit on a 15-MVA,66-kV base at the primary terminals. (b) Purely resistive loads of 7.5 MW at 13.2 kV and 5 MW at 2.3kV are connected to the secondary and tertiary sides of the transformer, respectively. Draw the per- unit impedance diagram, showing the per-unit impedances on a 15-MVA,66-kV base at the primary terminals.
For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
How many transformers are needed to make an open-delta connection?
A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters: Resistance of the 2400-V winding: R1=0.75 Resistance of the 240-V winding: R2=0.0075 Leakage reactance of the 2400-V winding: X1=1.0 Leakage reactance of the 240-V winding: X2=0.01 Exciting admittance on the 240-V side =0.003j0.02S (a) Draw the equivalent circuit referred to the high-voltage side of the transformer. (b) Draw the equivalent circuit referred to the low-voltage side of the transformer. Show the numerical values of impedances on the equivalent circuits.
An infinite bus, which is a constant voltage source, is connected to the primary of the three-winding transformer of Problem 3.53. A 7.5-MVA,13.2-kV synchronous motor with a sub transient reactance of 0.2 per unit is connected to the transformer secondary. A5-MW,2.3-kV three-phase resistive load is connected to the tertiary Choosing a base of 66 kV and 15 MVA in the primary, draw the impedance diagram of the system showing per-unit impedances. Neglect transformer exciting current, phase shifts, and all resistances except the resistive load.
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
Rework Example 3.12 for a+10 tap, providing a 10 increase for the high-voltage winding.
For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is referred to winding 1 (primary) by multiplying Z2 by (a) The turns ratio (N1/N2) (b) The square of the turns ratio (N1/N2)2 (c) The cubed turns ratio (N1/N2)3
A single-phase l0-kVA,2300/230-volt,60-Hz two-winding distribution transformer is connected as an autotransformer to step up the voltage from 2300 to 2530 volts (a) Draw a schematic diagram of this arrangement, showing all voltages and currents when delivering full load at rated voltage. (b) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of this kVA rating is transformed by magnetic induction? (C) The following data are obtained from tests carried out on the transformer when it is connected as a two-winding transformer: Open-circuit test with the low-voltage terminals excited: Applied voltage =230V, input current =0.45A, input power =70W. Short-circuit test with the high-voltage terminals excited: Applied voltage =120, input current =4.5A, input power =240W. Based on the data, compute the efficiency of the autotransformer corresponding to full load, rated voltage, and 0.8 power factor lagging. Comment on why the efficiency is higher as an autotransformer than as a two-winding transformer.
A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect I2RandGc2V losses. Assume equal series leakage reactances for the primary and the referred secondary.