The minimum number of wattmeter(s)required for measuring power of 3-phasebalanced load is The number of turns on the primary andsecondary windings of a 1- transformer are380 and 40 respectively. If the primary isconnected to a 2.2 kV, 50-Hz supply, thenthe secondary voltage on no-load is

Answered: Image /qna-images/answer/cb78f161-4ddb-4778-9e27-9519f54f90d0.jpg

Answered: mber of turns on the primary and dary…

mber of turns on the primary and dary windings of a 1-o transformen d 40 respectively. If the primary is cted to a 2.2 kV, 50-Hz supply, the condary voltage on no-load is

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 3.3MCQ: For an ideal 2-winding transformer, the ampere-turns of the primary winding, N1I1 is equal to the...

See similar textbooks

Related questions

Q: A 3,000-kw 750-volt d-c 60-cycle six-phase synchronous converter is fed from a three-phase…

A: Given P=3000 kW Vdc =750 V number of phases = m=6 Note : power factor and efficiency data are not…

Q: 240V single-phase transformer has full load copper loss of 3 10 KVA, ratts and a core loss of 200…

A: Given, S = 10 kVA , 600/240 VPCu = 300 WPi = 200 Wcosϕ = 0.6 Cu losses at half load,…

Q: Determine the rated primary and secondary currents of a 20-kVA 1200/120-V single-phase transformer.…

A: Electrical machines can be either generator , transformers or motors. They can be either Ac machines…

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: The number of turns on the primary and secondary windings of a 1-p transformer are 350 and 42…

A: Given : A single phase transformer having number of turns on the primary and secondary winding are…

Q: A 3000/200V ,50hz. , single phase transformer has a cross sectional area of 150 cm2 for the core. If…

Q: A 50 kVa single phase transformer has an initial cost of P120,000 and a salvage value of P35,000…

A: Here, we have given a 50 kVA single phase transformer: having the initial cost of P120,000. the…

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: The conditions of an induction motor on load resembles those of transformer whose secondary is…

Q: The apparent power in primary and secondary side of the distribution transformer remains the same at…

A: Given Apparent power is same in both primary and secondary of transformers Ture or false

Q: Q9-e) A single phase stepped-down transformer rating 500 kVA have a primary and secondary winding…

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

Q: Q1// What is the purpose of conducting (O experiments (o.c) and (s.c) on asingle phase transformer?

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

Q: A 25-kVA transformer has 500 turns on the primary and 50 turns on the second- ary winding. The…

A: Transformer is static device which work on Faraday's Law of electromagnetic induction. The secondary…

Q: The voltage per winding of the 220V/12V, 60 Hz single phase core transformer is 1V. If the maximum…

Q: Ql-phase step down transformer 1250 KVA, 1 1000/2200 V, 50 Hz .The resistance /phase and leakage…

Q: The open-circuit voltage of 246 V and the full load secondary voltage of 222 V, then the %…

A: According to Bartleby question answer rules I have to solve first question only.

Q: A single-phase 100 kVA, 1000 V/100 V, 50 Hz transformer has a voltage drop of 5 cross its series…

Q: The no-load current of a single-phase transformer is 5.0 A at 0.3 power factor when supplied from a…

Q: Two 100-kW, single-phase transformers are connected in parallel both on the primary and secondary.…

A: The solution is given below

Q: In a 1-phase transformer, if the no load secondary terminal voltage is 233 V and the full load…

Q: A single-phase transformer has 500 primary and 1200 secondary turns. The dimension of the core is 30…

Q: A 50 kVA transformar has a core loss of 500 W and full load core loss of 900 W. The load at which…

Q: Ql-phase step down transformer 1250 KVA, 1 1000/2200 V, 50 Hz .The resistance /phase and leakage…

Q: Q/ A 40-kVA, 3,300/240-V, 50 Hz, 1-phase transformer has 660 turns on the primary. Determine: the…

A: Given:E1=3300E2=240N1=660f=50 HzE2E1=N2N12403300=N2660N2=660×2403300=48Hence secondary turns 48

Q: A single-phase 50 Hz transformer has 80 turns on the primary winding and 400 turns on the secondary…

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

A: Given: KVA=1250, V1/V2=11000/2200Primary impedance=0.78+j4.8ΩSecondry impedance=0.01+j0.06Ω

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

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: Q- Electrical machines A single-phase 100 kVA, 1000 V/100 V, 50 Hz transformer has a voltage drop of…

A: Given- Single-phase 100 kVA, 1000 V/100 V, 50 Hz transformer. Voltage drop across series impedance…

Q: The impedance of the primary windings of a single-phase transformer with a transformation ratio of 6…

Q: In no load phasor diagram of practical transformer, the magnetizing current Imag is with primary…

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

Q: A load of 200 kW at 0.85 power factor is to pe shared by two transformers A and B aving the same…

Q: A 22.5-kVA single-phase transformer is tested with a true-RMS ammeter and an ammeter that indicates…

A: Meters that respond to the average value use a rectifier to convert the alternating current into…

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

Q: A 150 kVA three phase transformer supplies 100KVA at 50percent lagging power factor. The…

A: Voltage regulation is the change in the secondary terminal voltage of a transformer when full or…

Q: Three single phase transformers each having a 240 V primary and two 250 V secondaries, as shown in…

A: The primary voltage of the single-phase transformer is 240 V and the secondary voltage is 250 V.…

Q: parallel different KVA

A: Transformer- A device that transfers the electrical energy between two electrical circuits which are…

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

Q: The eddy current and hysteresis losses of a 4400-V, 60-Hz, 10 distributio transformer are 280 W and…

Q: An ideal 15-kVA transformer has 300 turns on the primary winding and 50 turns on the secondary…

A: Given Data: N1 = 300 N2 = 50 V1 = 2000 rating = 15 kVA

Q: The core of a 30, 50-Hz, 11000/550-V, A-Y, 300 kVA, core-type transformer operates with a flux of…

A: In this question we will find full load high voltage phase current....

Q: When two winding transformer is not connected to the load, primary balancing current flows in the…

Q: The voltage per winding of the 220V/12V, 50 Hz single phase core transformer is 1V. If the maximum…

Q: A 100 KVA transformer is at 80% of full-load with power factor of 0.85 lagging. What KVA of load of…

Q: The voltage per winding of the 220V/12V, 60 Hz single phase core transformer is 1V. If the maximum…

A: It is given that: V1=220 VV2=12 VVoltage per winding=Vper=1 VBmax=1.5 T

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

The minimum number of wattmeter(s)
required for measuring power of 3-phase
balanced load is

The number of turns on the primary and
secondary windings of a 1- transformer are
380 and 40 respectively. If the primary is
connected to a 2.2 kV, 50-Hz supply, then
the secondary voltage on no-load is

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

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
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
Rework Problem 3.14 if the transformer is delivering rated load at rated secondary voltage and at (a) unity power factor, (b) 0.8 power factor leading. Compare the results with those of Problem 3.14. -
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.
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.
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.
All values of a transformer are proportional to its __________________ ___________________.
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.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
(a) An ideal single-phase two-winding transformer with turns ratio at=N1/N2 is connected with a series impedance Z2 across winding 2. If one wants to replace Z2, with a series impedance Z1 across winding 1 and keep the terminal behavior of the two circuits to be identical, find Z1 in terms of Z2. (b) Would the above result be true if instead of a series impedance there is a shunt impedance? (c) Can one refer a ladder network on the secondary (2) side to the primary (1) side simply by multiplying every impedance byat2 ?
Reconsider Problem 3.64 with the change that now Tb includes both a transformer of the same turns ratio as Ta and a regulating transformer with a 4 phase shift. On the base of Ta, the impedance of the two comp onents of Tb is jO.1 per unit. Determine the complex power in per unit transmitted to the load through each transformer. Comment on how the transformers share the real and reactive pors.