Solve no 1b only 1a Define the following terms (G) Step respot (G) Steady-state response (i) Trans& Tech in Fig. Thas been closed for a long time and is opened at 1-0. Find j and v for all time.2002List four sarameters that are used to model ideal transform to approximats equivalent circuitb. A 5 kVA. 200/400 V, 50 Hz single phase transformer gave the following test results. Open-circuit testperformed on the low voltage side 200 V, 0.7 A, and 60 W. Short-circuit test performed on the highvoltage sile: 22 V, 16 A, and 120 W. Calculate the equivalent parameters of the transformer.3. A vector is represented by 20e. Write the varer equivalent fo ms of the vector and illustrate by means of avector diagram, the magnitude and position of the above vector«Г

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Answered: 1 a Define the following terms (G) Step…

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 3.28MCQ

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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.
Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.
A 100 kVA, 400 V/250 kV testing transformer has 8% leakage reactance and 2% resistance on 100 kVA base. A cable has to be tested at 500 kV using the above transformer as a resonant transformer at 50 Hz. If the charging current of the cable at 500 kV is 0.4 A, find the series inductance required. Assume 2% resistance for the inductor to be used and the connecting leads. Neglect dielectric loss of the cable. What will be the input voltage to the transformer?
An ideal transformer has 500 turns on the primary and 300 turns on the secondary. The source produces a voltage of 600V (RMS) and load Z is a pure resistance of 122. Calculate: (i) E2 (ii) Il & 12 (iii) Power delivered to the primary (W) (iv) Power output from secondary (W) 2. (v) what is the impedance seen by the source?
I just need help with 3 and 5 Using the parameters from the Typical Transformer Values Sheet for a 12.4kV/600V, 100 kVA transformer operating at its rated voltage on the secondary side with its rated load with a PF of 0.8 lagging. Determine for each of the transformer models – deluxe, medium, and economy: Draw the circuit diagram. - DONE Find: The magnitude of voltage at the input to the primary side, ==== 12.4kV The power factor on the primary side, ==== .98 pf The reactive power absorbed by the transformer, The efficiency of the transformer, ===== 81% The voltage regulation of the transformer.
Hi , This is nota graded question. This is from a textbook. Thanks for providing the answers
VASSESSMENT PROBLEM Objective 4-Be able to analyze circuits containing linear transformers using phasor methods A linear transformer couples a load consisting of a 360 2 resistor in series with a 0.25 H inductor to a sinusoidal voltage source, as shown. The voltage source has an internal impedance of 184 + j0 N and a maximum volt- age of 245.20 V, and it is operating at 800 rad/s. The transformer parameters are R1 = 100 2, = 0.5 H, R2 = 40 1, L2 k = 0.4. Calculate (a) the reflected impedance; (b) the primary current; and (c) the secondary current. 9.14 R1 R2 juM jas Ia Source b Transformer d Load = 0.125 H, and
The impedance ZL in the circuit shown in Figure is adjusted for maximumaverage power transfer to itself.(a) What should be the value of ZL?(b) What is the maximum average power delivered to ZL?(c) What percentage of the average power delivered to the linear transformer is delivered to ZL?
Find the following : 1.Ripple Voltage (vpp) 2. Zero-to peak ripple(Vop) 3.secondary winding of the transformer high line and low line
1. A transformer takes 10 A on no-load at a power factor of 0.1. The turn ratio is 4 : 1 (step down). Ifaload is supplied by the secondary at 200 A and p.f. of 0.8, find the primary current and power factor(internal voltage drops in transformer are to be ignored).
1. A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV side of 0.01 + j0.09 Q. This transformer has a core loss of 100 W at rated voltage. When rated current is applied to the 2400-V winding, the exciting current in that winding is found to be 0.2 A. a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the efficiency of this transformer at full load, 0.8 power factor lagging. c. If standard open-circuit and tests were performed on this transformer, what would be the measured values of these tests? 2. The following data were obtained on a 2.5 MVA, 50-Hz, 19.1-kV:3.81-kV single-phase transformer tested at 50 Hz: Voltage (V) Current (A) Power (kW) LV winding with HV terminals open-circuited: 3810 9.86 8.14 HV winding with LV terminals short-circuited: 920 141 10.3 a. Calculate the cantilever equivalent-circuit parameters as referred to the transformer high-voltage winding. b. Calculate the cantilever…
the rest of the question says "...the source. What is the efficiency of the transformer? [Hint: Efficiency is defined as the ratio of the output power to the input power.]

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