Two transformers are to be operated in parallel such that they share the load in proportion to their KVA ratings. The rating of the first transformer is 500KVA and its pu leakage impedance is 0.05pu. If the rating of the second transformer is 250KVA then its pu impedance is:

Two transformers are to be operated in parallel such that they share the load in proportion to their KVA ratings. The rating of the first transformer is 500KVA and its pu leakage impedance is 0.05pu. If the rating of the second transformer is 250KVA then its pu impedance 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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

See similar textbooks

Related questions

Q: following equations, find the system transfer functions: (a) d²y dt2 + 7y = 6r dr Ans. 6/ (s? + 3s…

A: According to Bartleby question answer rule I have to solve first three subpart of a question hence I…

Q: With the aid of a block diagram, sketch an electronic communication system. Explain one main process…

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

Q: IDSS=8mA , VP =-4V To help plot the DC load line VGS=VG-IDRS a)Determine the value of Vgs when…

A: As per the guidelines of bartleyby I need to answer first three subparts only. So kindly repost…

Q: The load voltage waveform has the mean value of a half sinewave, namely * 2( Vmax)/pi ( Vmax)/2pi O…

A: As per our company guidelines we are supposed to answer only first question kindly repost the other…

Q: The single-phase half-wave circuit with a com mutating diode is used to supply a heavily inductive…

A: In this question we need to find a mean voltage of load.

Q: For the following circuit, determine 1 R1 2.0k2 E3 10 V E1 12 V E2 -12 V R2 18kQ Il E4 30 V R3 4.0kQ

Q: Transducer is a device that can not convert energy from one form to another. Select one: True O…

Q: Five pieces of copper wire have the following description, rank the following resistance from lowest…

A: We need to find resistance for given length and diameters .

Q: 3. Calculate the output voltage Vo- 10Ω 50Ω 252 502 V, oM- 10Ω OVo 10Ω V2 4. Determine Vo- 52 (a) V…

Q: The maximum power can be obtained in a solar cell by multiplying Isc by Voc False True

A: Given statement, The maximum power can be obtained in a solar cell by multiplying Isc and Voc.

Q: A 3-phase, 33 kV, 37.5 MVA alternator is connected to a 33 kV overhead transmission line. The…

Q: 1. Draw the circuit diagram and name the parts of an Inductive proximity sensor. 2. Draw the circuit…

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

Q: If $ 0.24 is the total cost of using: 900-W toaster for 120 minutes and 45 seconds, 2kW dishwasher…

A: We need to find out cost per unit .

Q: 3A マM 4の H.W find the current at 4ohm by superposition theorem

Q: b) ideal amplifier that has the following parameters. Assume that the ambient temperature is 290…

Q: 6) Find i(t), t>0 t = 0 R1 v(t) i(t) 6 kN R2 12 V(+ 2 Vs C 100 pF 3 kN

Q: 8. The resistance of a conductor depends only on the cross sectional area of the conductor. True…

A: The resistance of a conductor is given by R=ρLA Where ρ is resistivity, L is length of conductor and…

Q: Consider a different control system with closed loop transfer function 4 T(s) = %3D s2 + Ks + 4…

Q: A set-dominant flip-flop behaves like an SR flip-flop, except that the input S = R = 1 is allowed,…

Q: : Draw the logic circuit of 2 bit comparator

Q: EXe A loo KvA transformer has y00turps on tHe Primary and & tuang on tHhe secondary. Th polay and…

Q: . Determine Vp and VGs for the network of Fig. 7.91 using the provided information. VD 4 V 1.8 k2 1…

Q: b R3 = 20.0 2 R4= 30.0 N Rq = 10.0 N E V2 = 24.0 V V1 = 12.0 V

Q: COURSE: Electrical Engineering SUBJECT: Electrical Apparatus INSTRUCTIONS: • Write the GIVEN with…

Q: Discuss how the Torque is developed in an Induction Motor

A: Gy

Q: Problem: An ideal transformer is rated at 2400/120 V, 9.6 kVA, and has 50 turns on the secondary…

A: We need to analyse the given single phase Transformer .

Q: Xe A loo kvA transformer has y00turps on the Primary and &o turng an He secondany. The poimacy and…

Q: 1. Describe the operation theory of FM modulation.

A: Brief description : Note : According to the guidelines of the company if the questions are of…

Q: Draw the symbol of Relay operation (off) Draw the symbol of Relay operation (on) Draw the symbol…

A: The symbol of the delay relay operation (off) is The symbol of the delay relay operation (on) is

Q: The maximum power can be obtained in a solar cell by multiplying Isc by Voc False True

A: The solution is given below

Q: 75 82 50 nF d 1 sin2pi100t 2 sin2pi100t 20 nF

A: The solution is given below

Q: Choose the correct statement: a. The pitch period for male speakers is sh A b. The pitch period for…

Q: If $ 0.24 is the total cost of using: 900-W toaster for 120 minutes and 45 seconds , 2kW dishwasher…

A: Given data, Total cost = $0.24 Rating of Toaster P = 900 W = 0.9 KW Total time of using toaster…

Q: Z = VR2 + X; been verified? 2. Obtain the power factor of the circuit? 3. Calculate the power factor…

Q: 1,33 An operational amplifier has a slew rate of 2 Vhu sec. If the peak output is 12 V, what will be…

A: Given an operational amplifier has, Slew rate = 2 Vμ.sec Peak output voltage, Vm=12 V

Q: The single-phase half-wave circuit with a com mutating diode is used to supply a heavily inductive…

Q: Today Using the K-map procedure, implement the optimum solution of the following Boolean function:

A: Given: Boolean Maxterm function, FA,B,C,D=∏3,4,5,6,7

Q: D1.27 Reduce the block diagrams shown in Figure D1.27 to obtain the system transfer function. R(a)…

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

Q: Determine iL(t) for t ≥ 0 for the circuit. Answer: (1 − e−0.6t) A

Q: 7.6 Special Case: Vas, = 0 V 18. For the network of Fig. 7.90. a. Find Ipo b. Determine VD, and Vpso…

A: The solution is given below

Q: 1) Implement a full adder with two 4 x 1 multiplexers. 2) Draw the logic diagram of a 2-to-4-line…

A: The solution of the following questions are

Q: A uniform line charge of 2 µC/m is located on the z axis. Find D in cartesian coordinates at P(1, 2,…

A: (a) -4≤z≤4: Here we use the general relationDp=∫ρldz4π∈o r-r'r-r'3where,r=ax+2ay+3az and r'=zaz. So,…

Q: Describe the resulting waveforms when the capacitors (initially 20uF and then replaced with 100uF)…

A: The output waveforms are as shown below,

Q: 4) Given the Boolean functions (F1,F2), determine the Boolean expression of each one. z. 21 MUX F1…

A: The solution is given below

Q: When a forward bias voltage of 0.64 V was applied to an abrupt silicon pn-junction at 300 K, the…

A: Given data is VF=0.64V ηi=1010cm-3Dn=25 cm2/sDp=10 cm2/sτn=τp=5×10-7 sεr=11.7Jpxn=3.88 A/cm2

Q: QI/ For the circuit shown below, obtain the equivalent resistance R ww ww

Q: Given: IDSS=8mA , VP =-4V Determine the value of Vgs when; 1. ID= 1mA 2. ID= 2mA 3. ID= 3mA 4.…

Q: B 50 th %3D %3D use er = 3. Ltion:- ESINEER

Q: Find the Steady State ethoh Of the system het)= 2014) 6(s+2) 14S

Q: Question For the series-parallel network shown in the following figure, find: (a) the supply…

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

Two transformers are to be operated in parallel such that they share the load in proportion to their KVA ratings.
The rating of the first transformer is 500KVA and its pu leakage impedance is 0.05pu. If the rating of the second
transformer is 250KVA then its pu impedance 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 3

VIEW

Step by step

Solved in 3 steps

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) 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 ?
A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when operated at rated load, 0.8 power factor lagging. This transformer is to be utilized as a 1440/1200-V step-down autotransformer in a power distribution system. (a) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the ratings as a two-winding transformer. Assume an ideal transformer. (b) Determine the efficiency of the autotransformer with the kVA loading of part (a) and 0.8 power factor leading.
All values of a transformer are proportional to its __________________ ___________________.
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.
Three single-phase transformers, each rated 10MVA,66.4/12.5kV,60Hz, with an equivalent series reactance of 0.1 per unit divided equally between primary and secondary, are connected in a three-phase bank. The high-voltage windings are V-connected and their terminals are directly connected to a 115-kV three-phase bus. The secondary terminals are all shorted together. Find the currents entering the high-voltage terminals and leaving the low-voltage terminals if the low-voltage windings are (a) Y-connected and (b) - connected.
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
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 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, 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.
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.
13) Primary of Current Transformer is having less number of turns. Select one: True False