R1 Is а Vs R2 R3 ob Q3. Given that Vs is 182 V, Is is 4.75 A, R1 is 20 Ohm, R2 is 33 Ohm and R3 is 14 Ohm, answer the following questions. You can use any appropriate network analysis technique to assist with the required transformations. (a) Find Norton equivalent resistance (RN) with respect to terminals a, b. (Unit: Ohm) Submit Answer Tries 0/8 (b) Find Norton equivalent current source (IN) with respect to terminals a, b. (Unit: A) Submit Answer Tries 0/8 Submit All +

R1 Is а Vs R2 R3 ob Q3. Given that Vs is 182 V, Is is 4.75 A, R1 is 20 Ohm, R2 is 33 Ohm and R3 is 14 Ohm, answer the following questions. You can use any appropriate network analysis technique to assist with the required transformations. (a) Find Norton equivalent resistance (RN) with respect to terminals a, b. (Unit: Ohm) Submit Answer Tries 0/8 (b) Find Norton equivalent current source (IN) with respect to terminals a, b. (Unit: A) Submit Answer Tries 0/8 Submit All +

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 3.34MCQ: Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit...

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Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and current relationships change? (a) If C1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C2 is the negative sequence complex voltage gain, express the relationship between C1andC2
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Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs. (a) True (b) False (ii) In the - circuit representation for real c in part (d), the admittance parameters Y11 and Y12 would be unequal. (a) True (b) False (iii) For complex c, can the admittance parameters be synthesized with a passive RLC circuit? (a) Yes (b) No
Two ideal CTs with turns ratios of 300 : 5 and 600 : 5 are connected as shown in Figure 3.6a and b. If the primary current is 3000A and the burden is 1 ohm, what are the voltages at the secondary terminals of the CTs in the two cases? Please answer in typing format please
Predict value portion, using source voltage of 3.05 and R1 = 49 ohms and R2 = 99.5 ohms “Using Kirchhoff’s parallel circuit law”
In an outdoor substation the three bus-bar conductors are supported by units of post type insulators. Each unit consists of a stack of 3 pin type insulators fixed one on the top of the other. The voltage across the lowest insulator is 15kV and that across the next unit is 12kV. Estimate: ratio of mutual to self-capacitance i. the bus-bar voltage of the substation. Efficiency across the string of insulators ii. iii.
please explain in detail how to arrive at these answers. I am not the best at using Kirchoff voltage law.
Basic Electrical EngineeringDraw symbols of electrical components. Note: You may use both IEC and NEMA symbols. - Conductors crossing but not connected- Conductors crossing and connected - DC source other than battery- DC generator- AC voltage source- Ideal current source- Ideal Voltage Source- Current Controlled Current Source- Current Controlled Voltage Source- Voltage Controlled Current Source - Voltage Controlled Voltage Source
Q2. A symmetrical n-network has a resistance of 7502 in the series arm and 2502 at each shunt arm. a) Calculate the open and short circuit impedances. b) Calculate the characteristic impedance. c) Calculate the propagation constant. d) Find its equivalent T-network.
Which of the following statements is/are true? (A In purely inductive circuit, the current leads voltage. (B) In purely resistive circuit, the current lags voltage. C In purely resistive circuit, the current is in phase with voltage. D In purely capacitive circuit, the voltage lags current.
Consider a 40MVA, 132/11kV transformer with a reactance of 15% on its rating, shown in Figure Q2. It is equipped with an on-load tap-changer that is used to maintain constant voltage at the 11kV busbar by compensating for variations in the voltage of the 132kV network, and for the voltage drop across the transformer. The variation of the network voltage at 132kV transformer busbar for heavy loading conditions is shown in the table below. Active power losses in the transformer are ignored, and it is assumed that the value of the reactance of the transformer is not influenced by the change in the turn ratio. Calculate t, the tap ratio, and the actual voltage at bus 2 in this case. (Note: For instance, a nominal ratio of the transformer is 132/11, when tapped to give 144/11 ratio, therefore t is 144/132=1.09). Load Power factor Voltage at 132kV Desired voltage at busbar (Bus 1) 11KV busbar (Bus 2) 5MVA 0.9 185kV 11kV Bus 2 Bus 1 X=15% t:1 Figure Q2
In an outdoor substation the three bus-bar conductors are supported by units of post type insulators. Each unit consists of a stack of 3 pin type insulators fixed one on the top of the other. The voltage across the lowest insulator is 15kV and that across the next unit is 12kV. Estimate: i. ratio of mutual to self-capacitance ii. the bus-bar voltage of the substation. iii. Efficiency across the string of insulators