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3400V 400V single-phase transformer takes loss is 400W load current ICOS LOS and the one Determine...
A single-phase 400V/200V transformer is supplying a load of 4 kW at 200 volts, 0.9 power factor lagging. Considering the transformer to be ideal, answer the following questions The output (secondary) current of this transformer 20.00/_25.84 A 20.00/_-25.84 A 22.22/_-25.84 A 22.22/_25.84 A 12.83/_-25.84 A 12.83/_23.28 A Load impedance in ohms. 8.10+j3.92 9.00-j4.36 3.62-j1.47 9.00+j4.36 4.50+j2.18 8.10-j3.92 The primary current 10.00/_25.84 A 10.00/_-25.84 A 40.00/_-25.84 A 44.44/_-25.84 A 11.11/_25.84 A 11.11/_-25.84 A The load impedance referred to the primary in...
Question 2 [20 marks] Sketch a complete (labelled) phasor diagram for an ideal single phase transformer with the following: i. ii. Leading power factor load Transformation ratio greater than one No-load current drawn at a hysteresis angle of displacement of 900 and is 20% of full load secondary current
Q1) The no-load current of a single phase transformer is 5.0 A at 0.4 power factor, when supplied at 250V, 50Hz. Primary turns are 200.Calculate i) R.M.S value of flux (3 marks) ii) Magnetizing current (3 marks) iii) Loss current (4 marks)
Q1) The no-load current of a single phase transformer is 5.0 A at 0.4 power factor, when supplied at 250V, 50Hz. Primary turns are 200.Calculate i) R.M.S value of flux (3 marks) ii) Magnetizing current (3 marks) iii) Loss current (4 marks)
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage ratio of 10. The following parameters are referred to low voltage side, with a supply of 200V. Equvalent Impedance referred to low woltage side Zev 0.1+jo.s a Load impedance referred to low voltage side R-4000 X-2310 Magnetizing Branch referred to low voltage side Draw an approximate equivalent circut with the given parameters and determine the following: 81 The magnetizing current (), the core loss...
Question-2) A single phase 100 kVA, 100/1000 V transformer has the following results from the open- circuit and short-circuit tests. Open circuit Short Circuit Voltage 100V 50V Current 6A 100A Power 400W 1800W (a) Determine the rated parameters for the high voltage and low voltage sides. (b) Determine the circuit parameters and draw the equivalent circuit referred to the High Voltage side. (©) Determine the voltage regulation for a 0.8 power factor lagging at full load.
SOLVE: In a factory there is a three-phase transformer with the following characteristics: -S = 100 kVA, 22 / 12.7 kV - D-Y - Resistance of 0.15 pu and a reactance of 0.6 pu. -Ram of excitation Rm = 100 pu and Xm = 20 pu. a) If this transformer supplies an 80 kVA load with an FP = 0.8 lag, draw the phasor diagram of one phase of the transformer. b) What is the regulation of the transformer bank...
Question 2 A single-phase transformer has the following nameplate ratings: 100 kVA, 7200/240 V and 60 Hz. The following results are obtained from open-circuit and short-circuit tests: Test Open-circuit Short-circuit Voltage 7200 V 250 V Current 0.65 A 13.89 A Real Power Input 425 W 1420 W a) Determine the parameters of this transformer, all referred to the primary side. b) The secondary of this transformer is connected to a load that draws 100% of the rated power at rated...
Question 31 (17 points) 120/120 single-phase transformer. Calculate the values for the equivalent circuit for the single-phase transformer for the given short and open circuit test shown below. (2 points) Draw the equivalent circuit. (1 point each) Find Ssc, QSC, Soc, Qoc, R1, R2, XI, X2, Rc, Xm, PFsc, PFoc, (esc θ。c) phase angel between V and I. What is the power rating of this transformer? Short circuit test (performed at High Voltage side) Vsc 16.20V rms, Isc 5.00 A...
A three phase power transformer of 100 (KVA), 22 / 12.7 (kV) and Δ-Y has a resistance of 0.15 (pu) and a reactance of 0.6 (pu). The elements of the excitation branch are R_m = 100 (pu) and X_m = 20 (pu) a) If this transformer supplies a load of 80 (KVA) with an FP = 0.8 delay, draw the phasor diagram of one phase of the transformer. b) What is the voltage regulation of the transformer bank in these...