What currents flow in a single-phasing star-connected motor? Draw its circuit diagram with its phasor representation?
What currents flow in a single-phasing star-connected motor? Draw its circuit diagram with its phasor representation?
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What currents flow in a single-phasing star-connected motor?
Draw its circuit diagram with its phasor representation?
Draw a phasor diagram of a balance 3theta WYE OR STAR connected balanced system
Draw a phasor diagram of a balance 3theta WYE OR STAR connected balanced system
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A three-phase 400V, star-connected motor has an output of 50kW, with an efficiency of 90 per cent and a power factor of 0.85. Calculate the line current. Sketch a phasor diagram showing the voltages and the currents. If the motor windings were connected in mesh (delta), What would be the correct voltage of a three-phase supply suitable for the motor?
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Open/short circuit of star connected motor question help
Question: The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor are given below. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the same time driving the rotor in the same direction as the rotating field, at synchronous speed; s=0.R1 = 0.1, X1 = 0.5, RI2 = 0.1, XI2 = 0.5,...
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For the circuit shown, find the impedance and phase angle. Draw an impedance phasor diagram and fill in the table below. Is the circuit inductive, capacitive, or (nearly) purely resistive?
A 3300 V, 3-phase, 50 Hz, star-connected synchronous motor (HELP)
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Question 4. (30 Marks) A 480V, Y-connected, 4-pole synchronous motor is drawing 40A at unity powe...
Question 4. (30 Marks) A 480V, Y-connected, 4-pole synchronous motor is drawing 40A at unity power factor from a 480V "infinite" bus. The field current flowing under these conditions is 4A. Its synchronous reactance is 8Ω (neglect Ra). Assume a linear open-circuit characteristic. a) Find the internal voltage and the torque angle for these conditions. b) Draw the Phasor diagram for this condition. On the same axis, use dashed lines to show the Phasor for 0.8 lagging operation while consuming...
Q3 (3 marks) (4 marks) Two wattmeters are connected in the a and b phases, with...
Q3 (3 marks) (4 marks) Two wattmeters are connected in the a and b phases, with the ends of the voltage coils connected in the c phase, of a balanced three phase star- connected lagging load. Draw a circuit diagram showing the three phases, the wattmeters and the load. Draw a phasor diagram of the phase voltages and currents, the voltages across the wattmeter voltage coils, and the angles between the wattmeter voltages and currents. Show that the sum of...
Prelab 1. In your lab notebook draw the schematic diagram for a three-phase wye-connected induction motor with its three-phase stator winding connected to the three-phase power supply through 25-Ω resistors. Connect two er analyzers in the circuit (between the 25-Ω resistors and the motor) to read the total power absorbed by the induction motor. What is the function of the resistors inserted in the circuit? 2. After reading this lab handout, draw the circuit diagram for the induction motor-synchronous generator...
For the circuit shown, find the impedance and phase angle. Draw an impedance phasor diagram and fill in the table below. Is the circuit inductive, capacitive, or (nearly) purely resistive?
Question 4. (30 Marks) A 480V, Y-connected, 4-pole synchronous motor is drawing 40A at unity power factor from a 480V "infinite" bus. The field current flowing under these conditions is 4A. Its synchronous reactance is 8Ω (neglect Ra). Assume a linear open-circuit characteristic. a) Find the internal voltage and the torque angle for these conditions. b) Draw the Phasor diagram for this condition. On the same axis, use dashed lines to show the Phasor for 0.8 lagging operation while consuming...
Q3 (3 marks) (4 marks) Two wattmeters are connected in the a and b phases, with the ends of the voltage coils connected in the c phase, of a balanced three phase star- connected lagging load. Draw a circuit diagram showing the three phases, the wattmeters and the load. Draw a phasor diagram of the phase voltages and currents, the voltages across the wattmeter voltage coils, and the angles between the wattmeter voltages and currents. Show that the sum of...
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