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DOM power face mer has the livers 3.2 kW at rateu Selon Tum D4.10 A 50-KVA,...
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm...
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect 'R and G^V losses. Assume equal series leakage reactances for the primary and the referred secondary
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where...
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies...
1) A single-phase 50-kVA, 2400/240 volt, 60 Hz distribution transformer is used as a step-down tr...
1) A single-phase 50-kVA, 2400/240 volt, 60 Hz distribution transformer is used as a step-down transformer at the load end of a 2400-volt feeder whose series impedance is (1.0+2.0) Ω. The equivalent series impedance of the transformer is (10+j25) Ω referred to the high voltage (primary) side. The transformer is delivering rated load at 0.8 power factor lagging and at rated secondary volitage. Neglect the transformer exciting curent. Using the transtormer raltings as base quantities work this problem in per...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: a) primary voltage. b) load impedance. c) load impedance referred to the primary. d) the real and reactive power supplied to the primary winding
Rework problem 3.4 if the load connected to the 240-V secondary winding absorbs 110 kVA under...
Rework problem 3.4 if the load connected to the 240-V secondary winding absorbs 110 kVA under short-term overload conditions at an 0.8 power factor leading and at 230 volts. Reference of problem 3.4 A single phase 100-kVA 2400/240-volt 60 Hz distribution transformer is used as a step down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 60kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: a) primary...
A three-phase Yy0 connected transformer has a nominal rating of 250 kVA and a voltage ratio...
A three-phase Yy0 connected transformer has a nominal rating of 250 kVA and a voltage ratio 15:0.4 kV. After conducting the short-circuit test, where the secondary winding is short-circuited, it is found that the primary series resistance is 0.08 pu and the primary series impedance magnitude is 0.1pu. The effect of the parallel branch in the transformer’s equivalent circuit may be neglected. Explain what information ‘Yy0’ gives about the transformer. Draw the per-phase equivalent circuit of the transformer during the...
A power transformer has rated power of 100 KVA and rated primary voltage of 22 KV....
A power transformer has rated power of 100 KVA and rated primary voltage of 22 KV. The series impedance is given as 1 + 15% pu. Find the series impedance in ohms.
Al. A 1 kVA single-phase step-down transformer is connected to a 220 V, 50 Hz A.C....
Al. A 1 kVA single-phase step-down transformer is connected to a 220 V, 50 Hz A.C. source and delivers power to a load. The winding resistance and reactance at secondary side are 0.02 2 and 0.1 12 respectively. The maximum value of core flux is 0.248 mWb and the secondary winding contains 1000 turns. Evaluate a. b. the voltage induced on the secondary side; the turn ratio of primary side to secondary side; the rated current on both sides; and...
3. Three single-phase, 10 kVA, 460/120 V, 60 Hz transformers are connected to form a three-phase...
3. Three single-phase, 10 kVA, 460/120 V, 60 Hz transformers are connected to form a three-phase 460/208 V transformer bank. The equivalent impedance of each transformer referred to HV side is 1.0 + j2.0 Ω. The transformer delivers 25 kW at 0.9 pf lagging at rated voltage. Answer the following questions: (a) Draw a schematic diagram showing the transformer connection. Draw three separate single-phase transformers and complete their primary and secondary connections. (b) Determine the magnitude of transformer primary and...
3.4 A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load,...
3.4 A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary wind- ing, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: (a) primary voltage, (b) load impedance, (c) load impedance referred to the primary, and (d) the real and reactive power sup- plied to the primary winding.
A single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect 'R and G^V losses. Assume equal series leakage reactances for the primary and the referred secondary
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies...
1) A single-phase 50-kVA, 2400/240 volt, 60 Hz distribution transformer is used as a step-down transformer at the load end of a 2400-volt feeder whose series impedance is (1.0+2.0) Ω. The equivalent series impedance of the transformer is (10+j25) Ω referred to the high voltage (primary) side. The transformer is delivering rated load at 0.8 power factor lagging and at rated secondary volitage. Neglect the transformer exciting curent. Using the transtormer raltings as base quantities work this problem in per...
A single-phase 100-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down transformer. The load, which is connected to the 240-volt secondary winding, absorbs 80 kVA at 0.8 power factor lagging and is at 230 volts. Assuming an ideal transformer, calculate the following: a) primary voltage. b) load impedance. c) load impedance referred to the primary. d) the real and reactive power supplied to the primary winding
Al. A 1 kVA single-phase step-down transformer is connected to a 220 V, 50 Hz A.C. source and delivers power to a load. The winding resistance and reactance at secondary side are 0.02 2 and 0.1 12 respectively. The maximum value of core flux is 0.248 mWb and the secondary winding contains 1000 turns. Evaluate a. b. the voltage induced on the secondary side; the turn ratio of primary side to secondary side; the rated current on both sides; and...
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