Q/ An 11,000/230-V, 150-kVA, 50-Hz, 1- phase transformer has a core loss of 1.4 kW and full-load Culoss of 1.6 kW. Determine (a) the kVA load for maximum efficiency and the minmum efficiency (b)the efficiency at * .half full-load at 0.8 power factor lagging

Q/ An 11,000/230-V, 150-kVA, 50-Hz, 1- phase transformer has a core loss of 1.4 kW and full-load Culoss of 1.6 kW. Determine (a) the kVA load for maximum efficiency and the minmum efficiency (b)the efficiency at * .half full-load at 0.8 power factor lagging

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 3.11P: For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power...

See similar textbooks

Related questions

Q: Excitation arm parameters of 1000V/400V single phase transformer with 15kVA power: Xm = 6kΩ an Given…

A: Given ;1000/400 V1-ϕ transformer with a power 15KVA,Xeq=6 K ohm Re=20 Kohm a)Electrical equivalent…

Q: (b) A single-phase transformer, with primary turns of 500, is delivering full-load of 80 kW at a…

A: Disclaimer: Since you have asked multipart questions, we will solve the first three subpart for…

Q: A 200 – MVA, 15/200 kV single-phase power transformer has a per – unit resistance of 1.2 percent…

Q: A 2,300/240-V, 60-Hz, 4.6-kVA transformer isdesigned to have an induced emf of 2.5 V/turn.Assuming…

A: The given transformer is a step-up transformer. a. The numbers of high-side turns are calculated as…

Q: the peak magnetizing flux, Φmax in the transformer. ii. What is the turns ratio of the transformer?

A: Given Data:Vp = Primary induced voltage/supplyvoltage = 220Vf = Frequency f = 50HzPf =…

Q: Using various types of transformers, give 10 impacts to the end-users per type of transformer in…

A: Transformer: Transformer is the static device that either step-up or step-down the voltage. It works…

Q: An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu loss…

Q: The open circuit test in a 100 kVA, 2000/200 V, 50 Hz, single phase transformer gives 200 V, 90 A, 5…

Q: An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Culoss…

A: In this question , transformer cu loss and iron loss given..Output KVA given..We have to find out…

Q: If a 50-turn transformer winding has a 120-V rms applied voltage, and if the peak coupling flux is…

A: Given values are - TurnsN=50Vt=120VoltFluxϕ=20mWb

Q: . A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV…

A: Given a single phase transformer with the following values 10 KVA ,2400v/120v ,60 Hz Core loss…

Q: In a 100 kVA, 1100/220 V, 50 Hz single-phase transformer with 2000 turns on the high-voltage side,…

A: The solution is given below.

Q: Using the parameters from the Typical Transformer Values Sheet for a 12.4kV/600V, 100 kVA…

Q: 1. The RMS value of induced emf in the primary N1 winding is E1 =; E2 = 2. In ideal transformer on…

Q: A transformer takes a No load current of 0.29 A and power factor of 0.405 lag, when its primary is…

A: Given, No load current (Io)= 0.29 A No load power factor= 0.405 lagging No load supply voltage…

Q: 9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu…

A: Given, Full load KVA, Sfl=150 kVA Core loss, Pi=1.4 kW Full load Copper loss, Pcu=1.6 kW Power…

Q: A 100-kVA, 4800-480-V, 60-Hz, single-phhase distributión has 6 V/turn and an equivalent impedance…

A: Given data: Impedance referred to the high side : 8.48 Ω Output power required: 50 KVA Primary…

Q: 1) 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV…

Q: 4. A 3-phase transformer, ratio 33/6.6-kV, A/Y, 2-MVA has a primary resistance of 89 per phase and a…

Q: (b) A 50-kVA, 2600/1300-V, single-phase transformer has a core loss of 780 W. The transformer has a…

Q: QI An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load…

A: Given data: Core loss = 1.4 kW Full load Copper loss= 1.6 kW Full load KVA =150 Power factor…

Q: a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the…

Q: 8.(a) A 100 KVA, 50 Hz, 440/11000 V, 1-phase transformer has an efficiency of 98.5% when supplying…

A: Let Pi → Iron losses Pl4→Full load copper losses At full load , 0.8 Power factor efficiency=98.5…

Q: The efficiency of a 400 kVA, 1-phase transformer is 95 % when delivering full load at 0.8 power…

Q: 14. In a 50-kVA, 11-kV/400-V, single-phase transformer, the iron and copper losses are 500 W and 600…

A: Given data, KVA rating S = 50 KVA Voltage rating 11 KV / 400 V Iron loss Pi=500 W Copper loss,…

Q: Question # 2: A 2000/400 V, 100 kVA, 60 Hz step-down single-phase transformer has a primary and…

Q: A two-winding transformer is rated at 60-kVA, 240/1200-V, 60-Hz. When operated as a conventional…

A: It s given that: KVA=60V1V2=2401200f=60 Hzcosϕ=0.8 V1V2Auto=2401200

Q: A 150 kVA, 2500/250 V, 50 Hz, single phase transformer has a no-load current of 0.75 A and a core…

Q: The hysteresis and eddy-current losses for a 75-kVA, 480-120 V, 60-Hz transformer are 215 W and I 15…

A: find the explanation below

Q: For an ideal 2-winding transformer, the armpere-turns of the primary winding, N1/1, is equal to the…

A: For the magnetic circuit, the magneto-motive force is given as:

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

Q: A 600 kVA, 1-ph transformer has an efficiency of 92 % both at full- oad and half-load at unity power…

Q: Illustrate the equivalent circuit of this transformer referred to the high voltage side of the…

Q: A 15 kVA, 2300/230 volt transformer is under test. With the low side supplied with rated voltage and…

Q: ) A single-phase transformer, with primary turns of 500, is delivering full-load of 80 kW at a…

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

Q: 1. Why is it not adjustable to carry or the same experiment for large transformers? 2. What method…

A: 1) Large transformers need large supply voltages which is difficult to achieve in an experimental…

Q: A two-winding transformer is rated at 60-kVA, 240/1200-V, 60-Hz. When operated as a conventional…

Q: 1. A quantity is expressed in per unit if it is divided by a chosen base quantity having the same…

A: Given, Base power= 10 KW Base Voltage (HV)=2400 V Base voltage (LV)=240 V Base current (LV)=Base…

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

Q: A transformer on no-load has a core-loss of 20 W, draws a current of 1 A (rms) and has an induced…

A: According to guidelines we need to solve only the first question. According to the question we have…

Q: A 11000/230 V, 150-kVA, 1-phase, 50-Hz transformer has core loss of 1.4 kW and full load copper loss…

A: The solution is given below

Q: A 50-kVA, 2600/1300-V, single-phase transformer has a core loss of 780 W. The transformer has a high…

Q: The primary and secondary windings of a 500-kVA, 11-kV/415-V, single-phase transformer have…

Q: 18. An ideal 50-Hz, core-type transformer has 100 primary-turns and 200 secondary- turns. The…

Q: A 100,000-kVA 230/115-kV ∆-∆ three-phase power transformer has a per-unit resistance of 0.02 pu and…

A: Given Data Rating 100,000-kVA 230/115-kV Type : ∆-∆ three-phase per-unit resistance = 0.02 pu…

Q: A 15-kVA, 2300/230- Question-2 !* V transformer has the following resistances and leakage…

A: As per the guidelines of Bartley we supposed to answer first three subpart only

Q: (b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a…

A: The solution is given below

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

Q/ An 11,000O/230-V, 150-kVA, 50-Hz, 1-
phase transformer has a core loss of 1.4 kW
and full-load Culoss of 1.6 kW. Determine (a)
the kVA load for maximum efficiency and
the minmum efficiency (b)the efficiency at
* .half full-load at 0.8 power factor lagging

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 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
A single-phase 100-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 60 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: (a) primary voltage, (b) load impedance, (c) load impedance referred to the primary, and (d) the real and reactive power supplied to the primary winding.
For an ideal 2-winding transformer, the ampere-turns of the primary winding, N1I1 is equal to the ampere-turns of the secondary winding, N2I2 (a) True (b) False
Consider Figure 3.4. For an ideal phase-shifting transformer, the imda nce is unchanged when it is referred from one side to the other. (a) True (b) False
The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer. (a) True (b) False
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.
A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer at the load end of a 2400-volt feeder whose series impedance is (1.0+j2.0) ohm. The equivalent series impedance of the transformer is (1.0+j2.5) ohms referred to the high-voltage (primary) side. The transformer is delivering rated load at a 0.8 power factor lagging and at a rated secondary voltage. Neglecting the transformer exciting current, determine (a) the voltage at the transformer primary terminals, (b) the voltage at the sending end of the feeder, and (c) the real and reactive power delivered to the sending end of the feeder.
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
A single-phase two-winding transformer rated 90MVA,80/120kV is to be connected as an autotransformer rated 80/200kV. Assume that the transformer is ideal. (a) Draw a schematic diagram of the ideal transformer connected as an autotransformer. showing the voltages, currents, and dot notation for polarity. (b) Determine 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 the kA rating is transferred by magnetic induction?
Consider a source of voltage v(t)=102sin(2t)V, with an internal resistance of 1800. A transformer that can be considered as ideal is used to couple a 50 resistive load to the source. (a) Determine the transformer primary-to-secondary turns ratio required to ensure maxi mum power transfer by matching the load and source resistances. (b) Find the average power delivered to the load, assenting maximum power transfer.
Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance Xeq=0.10perunit, are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power input of 65 kW and a current of 30 A. Compute the values for GcandBm in siemens referred to the high-voltage winding. Compute the efficiency of the transformer for a load of 10 MW at 0.8 p.f. lagging at rated voltage.