A 75KVA, three-phase transformer supplies the following loads initially: capacitor bank ------ 25KVAR Inductive load ----36KW at 0.715 p.f Find the maximum HP of an induction motor at 0.8 power factor and 90% efficiency that may be added to the load without overloading the transformer.

A 75KVA, three-phase transformer supplies the following loads initially: capacitor bank ------ 25KVAR Inductive load ----36KW at 0.715 p.f Find the maximum HP of an induction motor at 0.8 power factor and 90% efficiency that may be added to the load without overloading the transformer.

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

Related questions

Q: Approximate solution time is 5 minutes. A transformer supplies power to a feeder that has five…

Q: Q) A 50 Hz transformer takes 80 W input at 1.5 A and 120 V. If the primary winding resistance is 0.5…

A: Given- 50 Hz transformer, Input power- Po=80 W,Io=1.5 A,V=120 V,R=0.5 Ω. To Find- No load factor.…

Q: Consider a transformer with a primary coil consisting of 1490 turns and a secondary coil of 1900…

A: Given in the question: Turns in the primary winding = N1 = 1490 Turns in the secondary winding, N2 =…

Q: If the open circuit voltage is 239V and the full load voltage is 205V, then the percentage…

A: Voltage Regulation is nothing but ratio of drop in voltage from no load to full load to full load…

Q: e following problem must be solved analytically, without the use of mathematical formulas or…

A: Given data, Cross sectional area A=5 cm2 =5×10-4 m2 Flux density B=108 T RMS voltage V = 120 V…

Q: A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine the rated power…

A: As per the question, it is given that Rated output (S) = 300 kVA Power factor (ϕ) = 0.6 We have to…

Q: What are the similarities and dissimilarities of a 3-phase induction motor and a transformer?

A: Similarities of a 3-phase induction motor and a transformer Both 3- phase Induction motor and…

Q: Ideal transformer with primary of 200 turns and secondary of 100 turns. The primary is connected to…

A: secondary voltage = primary voltage×secondary turnsprimary turns. current in load = power delivered…

Q: 6. A single-phase, 225-kVA, 460/120-V transformer has 6% impedance and 96% efficiency. Find its…

A: In this question we need to find series R and X of the given transformer

Q: A transformer has a rated output of 300 kVA at a power factor of 0.6. Determine the rated power…

A: As per the question, it is given that Rated output (S) = 300 kVA Power factor ϕ= 0.6 We have to find…

Q: 1. A 2.4-kVA, 2400/240-V, 50-Hz, the step-down transformer has the following parameters: : RH =…

A: Rated kVA is kVA.Induced EMF ratio is V.The high voltage to low voltage winding turns ratio is…

Q: A 200-MVA 15/200-kV single-phase power transformer has a resistance of 0.01352 and a reactance of…

A: Given, In single phase transformer the parameters are S=200 MVAV1/V2=15/200 kVR=0.0135 ΩX=0.0563 Ω

Q: Consider a transformer with a primary coil consisting of 1226 turns and a secondary coil of 1078…

A: Number of turns on primary side, N1=1226. Number of turns on secondary side, N2=1078. The RMS…

Q: A single phase 500/200 V ,55HZ transformer has an efficiency of 98% at full-load. Determine the…

A: Given input frequency = 55 Hz and no load terminal voltage = 200 volts full load terminal voltage =…

Q: A transformer having a 360 turn primary winding takes 150 watts in power and 1.4 A in current at an…

Q: A transformer has an input voltage of 2kV and a step-down ratio of 5:1. The primary and secondary…

A: According to question: The equivalent resistance with respect to secondary winding is calculated as…

Q: low shows the circuit diagram of the linear variable differential transformer (LVDT). Figure The…

A: LVDT (linear variable differential transformer ) is a passive inductive transducer which requires an…

Q: The primary of a current transformer takes 1 A at a power factor of 0.4 when it is connected across…

A: Given: N1=2N2Io=1 Acosϕo=0.4I2=50 Acosϕ2=0.8 lag

Q: A transformer has a rated output of 200 kVA at a power factor of 0.8. Determine the rated power…

A: Given: Rated power, VI = 200kVA Power Factor = 0.8 The power output and reactive power can be…

Q: The table below shows some performance parameters of a certain power transformer. Full-load voltage…

A: In this question we need to find a voltage regulation for the given condition.

Q: 10kva single transformer has turns ratio of 300 / 23.

A: The equation of the transformer is given as

Q: What is the turns ratio of the transformer needed to match a 1 k source resistance to a 160 load?…

A: We need to find out the turn ratio for given load resistance

Q: A step-up transformer is designed so that the output of its secondary winding is 2,200 V (rms) when…

A: Given: A step up transformer is designed to have V1=210 VV2=2200 V

Q: A 5KVA, 240/120 V single phase transformer has the following parameters R1 = 0.06 Q R2 = 0.015 Q X1…

A: 5kVA, 240/120V Single phase transformer has given parameters. Find the primary current, voltage…

Q: A single phase, 500 kVA, 4400/440 V transformer has 100 turns in its secondary winding. Then find…

A: Solution: A single phase: KVA =500 KVA 4400/440 V, turns N2=100, Find: primary winding turns…

Q: The table below shows some performance parameters of a certain power transformer. Full-load voltage…

A: In this question, Choose the correct options What is power factor to become zero voltage…

Q: valent estion 4 The secondary of a 440/110, 50HZ single phase transformer draws a load of 8.8kW and…

Q: Core losses of a single phase 400/240 V, 20 kVA, 50 Hz transformer is 700 W. Maximum efficiency of…

A: Given, Core losses of a single phase 400/240 V, 20 kVA, 50 Hz transformer is 700 W. (Pi=0.7 kW)…

Q: 1. An ideal transformer with a 450 turn primary connected to a 600 V, 60 Hz supply line needs to…

A: Number of turns in primary N1=450. Primary voltage V1=600 V. Secondary voltage V2=240 V. Load…

Q: A transformer has a rated output of 300 kVA at a power factor of 0.6. Find the rated power output…

Q: The table below shows some performance parameters of a certain power transformer. Full-load voltage…

Q: A 30 KVA transformer has 300 turns on the primary and 50 turns on the secondary winding. The primary…

A: A 30 KVA transformer has 300 turns on the primary and 50 turns on the secondary winding. The primary…

Q: The transformation ratio for the below transformer is 5:1. Assume 240Vrms is applied to the…

Q: 5) A flyback converter has an input of 45 V, an output of 15 V, a duty ratio of 0.4, and a switching…

A: Given: A flyback converter has: Input voltage, Vs=45 V Output voltage, Vo=15 V Duty ratio, D=0.4…

Q: A transformer with a 10/1 turns ratio has a maximum flux density of 60,000 lines/in2, when the…

A: EMF E = 4.44×frequency×Flux in the core×per phase turns. But flux = flux density× area of the core.…

Q: A multitap transformer has 1500 turns on the primary, 100 turns between B and C, 600 turns between A…

Q: For the given circuit below, a step down transformer gives an RMS voltage of 230 V/ 16.7-0- 16.7 V…

A: Given, RMS voltage = 230V/16.7-0-16.7 V load resistance = 2.2 kilo-ohm

Q: 1.) A transformer with a rating 600 KVA has an efficiency 0f 94 percentage at full load and at 1/4TH…

Q: Which of the following are power losses that can occur in a practical transformer (non-ideal)?…

Q: solve using a transformators topic At a 115 kV input transformer with 300 turns, determine the…

A: We need to find out secondary voltage for given primary voltage for given turn ratio .

Q: Draw the scheme of a single-phase transformer with two secondary windings and mark the main symbols…

A: Transformer: A transformer is a electrical equipment whose main purpose is to transfer electrical…

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

A 75KVA, three-phase transformer
supplies the following loads initially:
capacitor bank ------ 25KVAR
Inductive load ----36KW at 0.715 p.f
Find the maximum HP of an
induction motor at 0.8 power factor
and 90% efficiency that may be
added to the load without
overloading the transformer.

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: Analyse the problem and Calculating the maximum Hp of an induction motor at 0.8pf and 90% efficiency

VIEW

Step 2: Calculating the maximum Hp of an induction motor at 0.8 pf and 90% efficiency

VIEW

Solution

VIEW

Step by step

Solved in 3 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 transformer has a rated output of 400 kVA at a power factor of 0.6. Determine the rated power output and the corresponding reactive power.
A 12V rms ac supply is connected to the primary winding of a transformer with a turns ratio of 0.052. calculate the RMS secondary voltage given a voltage regulation of 4.0%.
3. An ideal transformer with a 500 turns primary and 125 turns secondary windings delivers 400W to a 40 load. The resistance of the primary windings is 16O. Find the primary current and voltage
answer for the question. Which of the following conditions would be necessary in order for you to use an r-f transformer as a very sharply tuned band-pass device? OA. A series-tuned LC circuit must be connected across the secondary winding. OB. The primary and secondary windings should be overcoupled. O C. The primary and secondary windings must be shielded from each other. OD. A capacitor should be connected between the primary and secondary windings.
A 5 to 1 ratio, step-down 10 transformer has 230/460 V secondary voltages. The secondary winding being continuously wound but with the center tap brought out. Across one half of the winding is connected an induction motor drawing 50 A at 0.72 pf and 230 V. On the other half is connected an over-excited synchronous motor drawing 40 A at 0.9 pf and 230 V. (a) Determine the current thru the center tap (b) Assuming no-loss, determine the real power at the primary side 3.
How does the coupling factor affect the primary and secondary voltages? For example if the turns ratio in my transformer is 1:2 and the Vin is 10V, the voltage on the primary side is 10V and the voltage on the secondary side is 20V when the coupling factor (k) is 1. What will the primary and secondary voltages be if the coupling factor becomes 0.5?
The rated power of a certain transformer is 1 kVA. The transformer operates at 60 Hz and 120 V ac. at 60 Hz and 120 V ac. The secondary voltage is 600 V. (a) What is the maximum current at the load? (b) What is the smallest RL value that can be excited? (c) What is the largest capacitor that can be connected as a load?
Find the primary current (i1) in the following ideal transformer
The maximum efficiency of a 200KVA, 6000/230volt, 50HZ, single phase transformer occurs at half load and is 95% at unity power factor. What is the full load efficiency at 0.7 power factor?
Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across R, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diodeshave? (Use constant voltage drop model for the Silicon diode) D IN4001 OV 10 kN IN4001 DELL
Which of the following statements is true about an ideal transformer? O It changes the magnitude of DC signals. O It converts DC signals into AC signals. O It converts AC signals into DC signals. O It changes the magnitude of AC signals. hp
The no-load current of a transformer is 5 A at 0.3 power factor when connected across 200 V, 50 Hz supply. The number of turns on the primary is half that of the secondary. Find the primary current if a load taking 15 A at a lagging power factor of 80% is connected across the secondary