i need the answer quickly 1. B.5-Discussion:1-why generally the voltage is applied to H.V.side?2- Draw the exact equivalent circuit of the transformer ?IscReqXeqR2 X2R1w meIscX1VscVscFig. (1.4.a).- Fig. (1:4.bFig. (1.4) Equivalent circuit diagram of single phase transformerReq= R1+ R2ZegXeqXeq= X1+ X2Zeq=Req + XeqReqFig. (1.5)Fig. (1.5) The relation ship between (Req) and (Xeq)

Transformer is a static device which is used to step up or step down the voltage or current level…

1. B.5-Discussion: 1-why generally the voltage is applied to H.V.side? 2- Draw the exact equivalent circuit of the transformer ? Isc Req Xeq R1 w m. X1 R2 X2 Isc Vsc Vsc Fig. (1.4.a). Fig: (1:4.bt- Fig. (1.4) Equivalent circuit diagram of single phase transformer Req= R1+ R2 Zeg Xeq= X1+ X2 Xeq Zeq= Req + Xeq Req Fig. (1.5) Fig. (1.5) The relation ship between (Req) and (Xeq)

1. B.5-Discussion: 1-why generally the voltage is applied to H.V.side? 2- Draw the exact equivalent circuit of the transformer ? Isc Req Xeq R1 w m. X1 R2 X2 Isc Vsc Vsc Fig. (1.4.a). Fig: (1:4.bt- Fig. (1.4) Equivalent circuit diagram of single phase transformer Req= R1+ R2 Zeg Xeq= X1+ X2 Xeq Zeq= Req + Xeq Req Fig. (1.5) Fig. (1.5) The relation ship between (Req) and (Xeq)

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...

See similar textbooks

Similar questions

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.
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
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.
Q2/3-phase.E.W.C. R using center tap transformer supplies highly inductive load, find: 1. The average load voltage with and without FWD and discusses these cases. 2-lf firing angle equal to 45°, the supply voltage is240v, transformer ratio is (2/1). Calculate the DC current& voltage of this case. 3- Draw all waveforms diagram. 4- what are the difference between the type of connection (Delta or Star).
Q2: Draw the circuit diagram, write down the governing equations, and draw the phasor diagram with V, reference, for the exact equivalent circuit of 2-winding transformer of lagging load. Define the parameters of the circuit.
Q2/A/ What are the conditions for satisfying parallel operation of single phase transformer? Deduce an expression for the load shared by the two transformers in parallel when the transformers have equal voltage ratio? Prove your answer. B/ A 50 KVA, 2300/230 V, 60 11z transformer has a high voltage winding resistance of 0.650 and a low-voltage winding resistance of 0.0065 2. Laboratory tests showed the following results: Open circuit test: V = = 230 V, I =5.7A, P = 190 W Short circuit test: V-41.5 V, I-21.7 A, P-No wattmeter was used. 18 (2) Compute the value of primary voltage needed to give rated secondary voltage when the transformer is connected as a step-up one and is delivering 50 KVA at a power factor of 0.8 lagging. (b) Compute the efficiency under conditions of part (a).
18. In single phase transformer, if the secondary turns N2 is greater than the primary turns N1, then what is the relation between V2 and V1? a. V2 > V1 b. V1 < V2 c. V2 = V1 d. V2 < V1
(b) A single phase transformer has the parameters shown on Table Q3 and is connected to a 230 V and 50 Hz AC supply. Sketch the equivalent circuit and using this determine: (i) The Secondary voltage under Open Circuit (Vsoc) (ii) The Secondary voltage, current and power (W) given a 0.6 N resistive Load. (iii) The efficiency and voltage regulation at this load (c) Through suitable calculations determine whether the size, weight or cost of this transformer could be reduced such that it operated below a maximum flux density of 1.3 T and the current density in both windings was limited to around 5A/mm2 for this load. Parameter Value Units Definition RC 1400 Ω Core Loss Resistance XM 400 Ω Rleq Xleq Np Ns Magnetising Reactance Equivalent Winding Resistance Equivalent Leakage Inductance Number of turns in primary winding Number of turns in secondary winding Iron Core cross section 2.4 Ω 100 10 10,000 3 Ac mm2 Dwp Dwr Primary winding wire diameter Secondary winding wire diameter mm mm Table…
I need the answer as soon as possible
A 50 Hz, 1-phase transformer has a turn ratio of 6. The resistances are 0.9 ohm and 0.03 ohm and reactances are 5 ohm and 0.13 ohm for high voltage and low voltage windings respectively. Find (i) the voltage to be applied to the h.v. side to obtain full-load current of 200 A in the l.v. winding on short circuit (ii) the power factor on short circuit.
A 50Hz, single phase transformer has a ratio of N2:N1 = 0.2. On full-load, the secondary current is 200A. The resistance and reactance of the primary winding are 0.8 ohm and 4 ohm respectively. The corresponding values for the secondary winding are 0.04 ohm and 0.1 ohm. If the secondary is short circuited, what voltage must be applied to the primary to produce full-load current? What will be the copper loss?
Some power devices have bidirectional current capability Select one: O a. True b. False The voltage regulation of the transformer will depend on the load Select one: O a. For mainly inductive or resistive load, the voltage regulation is negative O b. For mainly capacitive, inductive or resistive load, the regulation is positive Oc. For mainly capacitive load, voltage regulation is positive and other loads it is negative. O d. For mainly capacitive load, voltage regulation is negative.