Three loads, each with resistance 40Ω , are star connected to a 363.73V , 3-phase supply. a) Determine the phase voltage of the system b) Determine the phase current c) Determine the line current
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Three loads, each with resistance 40Ω , are star connected to a 363.73V , 3-phase supply. a) Determine the phase voltage of the system b) Determine the phase current c) Determine the line current
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- Three unequal single-phase loads are connected across the lines of a balanced, 3- phase, 230 volts (line) circuit. The first load takes 106 A at 0.78 pf lagging and is connected across lines 1 & 2. The second load takes 142 A, at 0.82 pf lagging and is connected across 2 & 3. The third one takes a load of 28.4 kW at 0.77 pf lagging. Solve for the following a. The line currents b.The equivalent wye connected impedance of the connection c. The total complex power absorbed by the loadThree unequal single-phase loads are connected across the lines of a balanced, 3-phase, 230 volts (line) circuit. The first load takes 106 A at 0.78 pf lagging and is connected across lines 1 & 2. The second load takes 142 A, at 0.82 pf lagging and is connected across 2 & 3. The third one takes a load of 28.4 kW at 0.77 pf lagging. Solve for the following a. The line currentsb. The equivalent wye connected impedance of the connectionc. The total complex power absorbed by the loadThree unequal single-phase loads are connected across the lines of a balanced, 3-phase, 230 volts (line) circuit. The first load takes 106 A at 0.78 pf lagging and is connected across lines 1 & 2. The second load takes 142 A, at 0.82 pf lagging and is connected across 2 & 3. The third one takes a load of 28.4 kW at 0.77 pf lagging. Solve for the following The line currents The equivalent wye connected impedance of the connection The total complex power absorbed by the load
- 3) What is the value of line current in three phase delta connected system, when the phase current is 5A? a. 5 A b. 5 / A c. 3 X 5 A d. X 5 AThree unequal single phase loads so connected across the lines of a blanced 3 phase, 230 volts circuit. The firts takes 106 A at 0.78 pf lagging and is connected across lines 1 and 2. The second takes 142 A at 0.82 pf lagging and is connected across lines 2 and 3. And the third takes 28.4 kW at 0.77 pf lagging and is connected across lines 3 and 1. find the three line currents.In a 3-phase, 4-wire system, the line voltage is 4157 V. What is the line to neutral voltage?
- For a 3-phase ac device, full load current is 40A, line voltage is 450V and reactance value is 0.06Q, then percentage reactance of this device is O 0.533 % O 0.307 % 6 % O 0.923 % In a power system the short circuit KVA due to symmetrical fault occurred away from generating station is calcu 6000KVA then, if the symmetrical fault occurred near to generating station then short circuit KVA may beQuestion 3: i) Identify the type of circuit shown and justify your answer. i) Establish the line currents, line voltages, phase currents, and phase voltages for the given circuit. 110/0° V rms 9-j6 N 110 –120° V rms 9-j6Q 9-j62 110/120° V rms 2ΩMatch the following Each load wilI be connected between two phase wires Choose... Power measured by two wattmeter method Choose... Each load will be connected between a Phase wire and Neutral wire only unbalanced Load Both Balanced and Unbalanced Load Current in the neutral wire is zero Star connection Junction Point where one end of all three phase loads joined together Delta Point Delta connection Only Balanced Load Series Connection Neutral point
- An inductor of 0.3 H and resistance 60 ohms is connected between each line and the neutral of 50 Hz three phase. The voltage between pairs ia 415v. Calculate the currwnt in each line The total power in the system4. Draw a phasor diagram that shows ??, ?, ??, and ??5. Does the current lag, lead, or in-phase with the supply voltage? Explain why this is the case.6. Confirm that KVL is satisfied for Figure 2refer to figure 1 on worksheet 1, to answer based on the fact that it is a 240/480V, 120/240V, 4KVA single-phase trnasforme What should be the voltage between the supply lines connected to terminals H-1 and H-4? A-120, B-240V, C-480V, D- none of the above What should be the voltage between the lines A and C? A-120V, B- 240V, C- 480V, D- none of tshe above What should be the voltage between lines B and C? A-120V, B-240V, C-480, D-none of the above