A 150-kVA, 3,600/360-volt, 60 cycle transformer has the following constants: Rp = 0.63; Xp = 1.08; Rs = 0.0057; Xs = 0.0102. Calculate the following values in primary and secondary terms. a. equivalent resistance b. equivalent reactance c. equivalent impedance

A 150-kVA, 3,600/360-volt, 60 cycle transformer has the following constants: Rp = 0.63; Xp = 1.08; Rs = 0.0057; Xs = 0.0102. Calculate the following values in primary and secondary terms. a. equivalent resistance b. equivalent reactance c. equivalent impedance

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 3.28MCQ

See similar textbooks

Related questions

Q: (b) A 120 kVA, 2000 V / 400 V, 50 Hz, single-phase transformer has an iron loss of 650 W and a full…

A: In this question , transformer with losses is given...We have to find out efficiency and voltage…

Q: A 240/60 V, single-phase, ideal transformer is to supply power to a load rated at 90 V, 60 Hz. What…

Q: A transformer takes a current of 0.8A, when its primary is connected to a 240V, 50Hz supply, the…

A: Transformers

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: The primary and secondary windings of a 500 kVA transformer have resistances of 0.44 Ω and 0.0027 Ω,…

A: The solution is given below

Q: 2) The following no-load results are obtained at the excitation branch of a 10, 20 kVA, 2400/240 V,…

Q: 8. The following data were obtained from a short-circuit test performed upon a 50 kVA, 2300/115 V,…

Q: e)The followings are the data taken from the test done on a transformer rating of 3 kVA,240/120 V,…

A: In this question, a transformer rating of 3 kVA,240/120 V, 50 Hz: The data Resistance of turns at…

Q: A 15-kVA, 2400/240-V, 60 Hz single phase transformer has the following equivalent circuit…

A: Given Data: R1 =2.5 ohmR2 = 0.0025 ohmX1 = 7 ohmX2 = 0.07 ohmRc = 32000 ohmXm = 11500 ohmLoad = 10…

Q: apparent power: 15 kVA, primary:500 V, secondary: 220 V, 50 Hz, idle running current: %7 Idle lost…

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

Q: ABB company manufactures 44 kVA, 2200/220 V conventional transformer. Using this transformer, design…

A: In autotransformer, the same winding works both primary and secondary. AB- is known as series…

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

A: In this question, 100kVA, 3 phase ideal transformer Number of turn in primary side N1 = 4950…

Q: The resistance of a 500 kva, 11000/2300 volts 60 Hz transformer are respectively 0.8 and 0.04 ohm…

Q: Q4:A/The primary and secondary windings of a 30 kVA 76000/230, V, 1-phase transformer have…

A: This question belongs to electrical machine . It is based on the short circuit test of transformer .…

Q: Show all steps and working please. You have been hired as an engineering consultant to diagnose an…

A: Note: As per our policy, I have attempted the first three subquestions. Given data: No load…

Q: A 300 kVA, 12,000 : 4000 V, 60 Hz transformer has open-circuit test readings: 4000V, 1.1 A, 2000 W,…

Q: b) A 20kVA 8000/277V distribution transformer has the following resistances and reactances: Rp = 320…

A: This question is related to single phase transformers

Q: A 10-kVA, single-phase transformer has its primary connected to a 2000-V supply. It has 60 turns on…

Q: 4. A 10-kVA, single-phase transformer has its primary connected to a 2000-V supply. It has 60 turns…

A: For a transformer:-1.N2N=V2V1=I1I22.I1=SV1 & I2=SV2

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: The maximum efficiency of a 500 kVA, 3300/500 volts, 50 Hz, single - phase transformer is 97 % and…

Q: The rating of current transformer is given as 200/5A 5P10 20VA. Assume that the secondary resistance…

A: Given CT secondary resistance =Rc t =0.12 Ω from CT data 200/5A 5P10 20VA Sn =20 VA I=5 A Fn=10

Q: / The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load…

Q: A 2320.2 VA step-down transformer has the following parameters as referred to the primary side:…

Q: I need the answer as soon as possible

Q: Determine the required load resistance to operate the transformer of Q3(b) at maximum efficiency…

A: According to question: c) The turn ratio 'a' is calculated as ∵a=VpVs⇒a=23024⇒a≃10 The transformer…

Q: 15-kVA, 2400:240-V, 60-Hz, single-phase transformer has the following circuit parameters expressed…

A: According to given diagram, all parameters are given but only load current is asked. So the…

Q: A 3 kava, 500/250 V, 50 Hz, step-down transformer has the following parameters: Re1 = 3.5 ohm, Xe1 =…

A: A 3 KVA, 500/250 V, 50 Hz, step-down transformer parameters: Re1 = 3.5 ohm, Xe1 = 4.5 ohm, Rc1 =…

Q: A 230-kVA, 2300/230-V, 60-Hz, step-down, two-winding transformer has the following parameters RH =…

A: Given data: S=230 kVARH=1.2 ΩRL=12 mΩXH=3 ΩXL=30 mΩRcH=2 kΩXmH=1.8 kΩVp=2300 V

Q: A 500-kVA, 3-phase, 50 Hz transformer has a voltage ratio (line voltages) of 33/11 kV and is…

Q: A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and leakage-…

Q: transformer is rated at 2,300:230 volts, 15 KVA and 60 cycles per Second. The core loss is 92 watts…

Q: 19.A 25kVA, 2400/240, 60Hz single phase transformer gave the following short circuit test result…

Q: The following information is given in connection with test performed on a 50 kva, 4600/230 volts…

Q: A 1-phase, 10-KVA, 500/250-V, 50-Hz transformer has the following constants: Reactance: primary 0.2…

A: Solve for short circuit current

Q: 2- 25 kVA, 50 Hz, 2400/416 V, Y/A connected 3-phase transformer test results: With high voltage…

A: GIVEN data:

Q: A 1-phase, 10-KVA, 500/250-V, 50-Hz transformer has the following constants: Reactance: primary…

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: Determine the regulation at 0.8 lagging power factor of a 10 KVA transformer the characteristics of…

A: It is given that: 240/120 volts r1=0.13ohm r2=0.03ohm x1=0.20ohm x2=0.05ohm Core Loss=85W In=1.0…

Q: Q2: A single-line transformer operates at the rate of converting the amount and number of turns of…

A: Need to find secondary voltage for the given transformer

Q: (b) The primary and secondary windings of a 250 kVA, 132/66 kV, 50 Hz power transformer have…

Q: The rating of a current transformer is expressed as 20VA/10/15. Assume that the secondary resistance…

Q: 26. The following information is given in connection with tests performed on a 50-kva 4,600/230-volt…

Q: A 23 KVA, 2300/230 V, 60 Hz step down transformer has the following resistance and leakage reactance…

Q: (b) A 1000 VA, 230/115V transformer is to be determined. The open and short circuit tests were…

Q: 4. Calculate the full-load primary and secondary currents of a 5-kva 2,400/120-volt transformer.

A: Given power S = 5KVA Primary voltage PV = 2400 Full load primary current = S/PV = 5000/2400 =…

Q: A 23 KVA, 2300/230 V, 60 Hz step down transformer has the following resistance and leakage reactance…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: Q2: A 4000/400 V, 10 kVA transformer has the following constants: Primary and secondary winding…

A: Given values are -

Q: Kindly type the answer in the box below and the calculation steps should be written in a white paper…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Solve the following problems with complete solutions and units using two(2) decimal digits. 1. A…

Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

A 150-kVA, 3,600/360-volt, 60 cycle transformer has
the following constants:
Rp = 0.63; Xp = 1.08; Rs = 0. 0057; Xs = 0. 0102.
Calculate the following values in primary and
secondary terms.
a. equivalent resistance
b. equivalent reactance
c. equivalent impedance

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 3

VIEW

Step by step

Solved in 3 steps with 3 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

An ideal transformer has no real or reactive power loss. (a) True (b) False
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
Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
The primary ofa certain transformer takes 1 A at a power factor of 0.4 when connected across a 230 V, 50 Hz supply and the secondary is on open circuit. The number of turns on the primary is twice that on the secondary. A load taking 50 A at a lagging power factor of 0.8 is now connected across the secondary. Sketch, and explain briefly, the phasor diagram for this condition, neglecting voltage drops in the transformer. What is now the value of the primary current?
10 A three-phase transformer is given. The number of turns of the high voltage winding is N1=850 and the number of turns of the low voltage winding is N2=34. The high voltage winding is energized with V1= 10 kV rms line-to-line and V2= 400 V rms line-to-line has been taken from the low voltage winding. What is the connection of the low voltage winding if the high voltage winding is Y-connected? Εισαγάγετε την απάντησή σας
The primary of a certain transformer takes 1 A at a power factor of 0.4 when connected across a 230 V, 50 Hz supply and the secondary is on open circuit. The number of turns on the primary is twice that on the secondary. A load taking 50 A at a lagging power factor of 0.8 is now connected across the secondary. Sketch, and explain briefly, the phasor diagram for this condition, neglecting voltage drops in the transformer. What is now the value of the primary current?
A 250/125 V, five kVA single-phase transformer has a primary resistance of 0.2 ohms and reactance of 0.75 ohms. The secondary resistance is 0.05 ohm and reactance of 0.2 ohms.a) Determine its regulation while supplying full load on 0.8 leading p.f.b) The secondary terminal voltage on full load and 0.8 leading p.f.Ans.: -0.4.88%; 131.1
7. The primary of a single-phase transformer takes 1 A at power factor of 0.4 when connected to a 240-V, 50-Hz supply and the secondary is on open circuit. The number of turns on the primary is twice that on the secondary. A load taking 50 A at a lagging power factor of 0.8 is now connected across the secondary. What is now the value of the primary current ? transformer.) (Neglect the voltage drops in the
7. A step-down transformer has a turn ratio Np/Ns of 4:1. If the primary voltage Vp is 120 V(rms), the secondary voltage Vs is (a) 480 V (b) 120 V (c)30 V (d) It cannot be determined.
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.
A. What are the various causes of voltage drop in atransformer? B. A single phase transformer has arated secondary voltage of (230v).when Loaded by a purely inductive load to its rated Value of current ,its terminal voltage drops to (200 v). Calculate its regulation and efficiency.