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.

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 3.15P: Rework Problem 3.14 if the transformer is delivering rated load at rated secondary voltage and at...

See similar textbooks

Related questions

Q: Defte Desy DnB en Yard Induktans1 400 mH olan bir indüktöre 50 Hz'lik bir AC sinyal uygulandığında…

A: given that Ac signal frequency f=50Hz inductance L=400mH inductive reactance in ohms=

Q: v1(t)=30 cos (446t-41°) V D(1) i(t) Figure P8.6 For a current i(t) = C cos(wt+P), enter the value of…

A: Given , V1(t)=30cos(446t-41°) V For current i(t)=C cos(wt+P) A We need to calculate the value of…

Q: hy is electrical safety important to you as a mechanical engineer? Discuss the basic requirements…

A: We need to discuss importance of electrical safety for a mechanical engineer. We also need to…

Q: Could you please solve the remaining question :)

A: The transfer function of multiple input and single output system needs to be obtained and the…

Q: Determine V, and I, for the series circuit of Fig. 2.2

Q: 3. A 3200/400 single-phase transformer has winding resistance and reactance of 30 and 132…

A: In this question, We need to determine the equivalent terms in primary side and secondary side.

Q: 3.3 The characteristic equation of a closed loop control system is s³ + 3Ks² + (K+2)s + 4 = 0. Find…

A: The characteristic equation is given as, s3+3Ks2+K+2s+4=0

Q: Tentukan L(10 sin 5t + 5t²)

Q: The probability of drawing three king cards among 52 cards .with replacement is 0.000192 * a) TO b)…

A: A deck of 52 cards us given and three cards are drawn with replacement.

Q: 5. Reduce the block diagram on the right to canonical form and find C(s). K is constant.

A: The given block diagram should be reduced into canonical form by using the block diagram reduction…

Q: How much work is required to move a charge of 0.0μC from a point r = 50 cm to a point r = 10 cm?

A: Electric field is force per unit charge. No net work is done in moving charge in closed path in…

Q: A stationary random process X(t) has the power spectral density (PSD) given below 3w w² + 16 Find…

Q: Show a picture of t match and l match matching box. Which one would be better used for a PCB?

A: According to the question, we need to show a picture of T match and L match matching box. Also need…

Q: 9.16 Repeat Problem 9.14 for a bolted line-to-line fault.

A: In this question we need to find the Subtransient fault current in per-unit and in kA, per-unit L-G…

Q: Using Nodal analysis, find V1 in Volts if Is = 4.3 A and R = 8.4 Ohms. Give answer in 2 decimal…

Q: d³c dts A) Finde the transfer function B) Obtain the state-space form dr +6c = 2 +3r dt The system…

A: In this question we need to find the following Transfer function of the given system State space…

Q: ***Consider the circuit shown in figure 3, assume that Vin =21 sin (wt) (in V), to answer Q6 and Q7.…

Q: RT IT, IR1,IR2 IR3, IR4 E 12V w RI 1ksz R2 2kQ ww ww R3 1k R4 5009

Q: Find IN and RN For the ect. shown at 12 resistar. ? Ansi- IN=0.643A RN = 1.552 1√2 M 3V 312 212 4√2…

A: In this question we need to find the value of Norton current and Norton resistance.

Q: Required information Consider the given circuit where 1 = 10 mA. An ammeter with internal resistance…

Q: Determine the total potential energy stored, in microjoules, in a cylinder of radius 8 m and height…

Q: Q3] Find the output y(n) of the system h(n)= u(n)-u(n-3) if its input x(n) = (¹)"u(n), by using a)…

Q: DELTA-TO-WYE TRANSFORMATION Vs VS A E Do not include the unit. The answer must be in 2 decimal…

A: The given problem is from circuits theory. The solution given is not matched so I m providing the…

Q: How much collector area would a 1000-MW(e) solar farm require if the individual efficiencies of the…

A: We will refer the concept of solar energy generation with respect to efficiency.

Q: 3.72 By inspection, write the mesh-current equations for the circuit in Fig. 3.116.

A: It is given that:

Q: In the feedback system shown below G(s)=- (s² +2s) The step response of the closed -loop system…

Q: this question says to solve it without CE but I don't want this solution, please solve it only when…

A: For the given circuit we have to determine the re, Zi, Zo, Av and Ai. All this parameters can be…

Q: 04: The output voltage of a transmitter is given by the following envelope wave form. This voltage…

A: As per the guidelines of Bartleby we suppose to answer first three subpart only for solution of…

Q: Consider the circuit in Fig. 6. Notice the independent voltage source is represented as a sinusoidal…

Q: E4-9 Draw the root locus for the following polynomial equations. (1) s³ +2s² + 3s + Ks+2K = 0; (2)…

Q: show the deriviation of the eq and show the solution on how to come up to the final answer

A: It is given that:

Q: The total reactance and total susceptance of a lossless overhead EHV line, operating at 50 Hz are…

A: Lossless overhead EHV line- Frequency f=50 Hz, Total reactance=0.045 pu, Total susceptance=1.2 pu,…

Q: A step-down transformer with a 8:1 turn ratio has Is�� = 1.2 AA. The load is 21 ΩΩ. What is the…

Q: Problem-3: Consider the negative feedback block diagram given in Figure-3. a) Find the value of the…

Q: Problem 4: Find Vo in below network: 12/0°V + 292 Ī₁ j202 2Vo + Answer: V0 = 8.24 <-30.96° V Ī - jln…

Q: Consider the following block diagram R(s) K H₂(s) 1 b) Let H₁ H2 = 1, H3 = K₁, G2 = conditions on…

A: Given: A block diagram, To find: a) Closed loop transfer function using block diagram reduction…

Q: Using mesh analysis, find I, in the circuit of Fig. 3.21.

A: It is given that:

Q: *if a^2 - 4b =0 then the roots are complex O real O repeated O other O

A: The equation is, a2-4b=0.

Q: 1. Answer the questions. (1) With the following transfer functions, obtain its output (c(t)) with…

A: Since you have posted multiple questions with multiple sub parts, we will provide the solution only…

Q: AV X ms Soru 3) Yukarıdaki grafikte periyot T-76 ms ve iki işaret arasında X=8 ms zaman farkı…

Q: A DC chopper has a resistive load of R = 102 and an input voltage of Vs = 220 V. When the chopper…

A: DC chopper - A DC chopper is a power electronic gadget used to change a decent DC voltage over…

Q: Figure QB2b shows a circuit in which the three resistors (labelled A, B and C) each have a…

Q: VS1 IA m R2 IB using Mesh analysis what is the equation at loop IB? (A) VS2 = R2*1A + (R2+R3)*IB B)…

Q: Determine v₁ and v₂ in the circuit of Fig. 3.71.

A: It is given that:

Q: 02A 1.11 A 0.344 A 10 V O 0,5 A + O Different answer 5Ω www Ā Khi 15 Ω Assume ideal diodes. Find the…

A: In this question, We need to determine the current in the 15 ohm resistance. didoes are ideal so…

Q: Find the output of the following circuit: |Q> xH¬ZH>output?

A: To determine the output of the quantum state q> = 3/5|0> - 4/5|1> after passing it through…

Q: A circuit comprises the following components: a 270 µF capacitor connected in series with a 42 kΩ…

A: it is asked to find the initial value of current flowing in given circuit

Q: Determine the work done, in µJ, in moving a 8-nC charge from A(3, 4, 3) m to B(-3, 3, -1) m against…

A: In this question we need to find the work done, in µJ, in moving a 8-nC charge from A(3, 4, 3) m to…

Q: A circular loop antenna with cross-sectional area 10 cm2 is absorbing power from electromagnetic…

A: The power absorbed by the circular loop antenna can be given by: P = (1/2) × R × I2 where , R is…

Q: transfer function

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

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, 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 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 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a 150-MVA,0.8 lagging power factor load through a step-down 230/23-kV transformer. The impedance of the line and transformers at 230kVis18+j60. Determine the tap setting for each transformer to maintain the voltage at the load at 23 kV.
For an ideal transformer, the efficiency is (a) 0 (b) 100 (c) 50
The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
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. -
In per-unit equivalent circuits of practical three-phase transformers, under balanced thr-phase operation, in which of the following connect ions would a phase-shifting transformer come up? (a) Y-Y (b) Y- (c) -
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.
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.
(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 ?