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4) (a) What are the methods to connect Source and the Load. (b) Draw the two...
(4) Three single-phase AC loads draw power from the same 12020으 kms source. Load 1 draws...
(4) Three single-phase AC loads draw power from the same 12020으 kms source. Load 1 draws 120 w at a lagging PF of 0.75, Load 2 draws 75 VA at a leading PF of 0.6 and Load 3 draws 100 VA at a leading PF of 0.8. Determine the complex power consumed by each load. Calculate the rms current phasor for each load. a. b.
A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission...
A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission line. The line-line voltage for the source is 100∟0° V/phase and the impedance of load is (27 + j18) Ω/phase. The transmission line has an impedance of (1 + j4) Ω/line. a) Draw the complete schematic of the power system showing the location of wattmeters. (Two-Wattmeter system is considered for this problem). Phase “a” could be considered as a reference phase. b) What must...
4. Consider a stepper motor with two phases. Phase 1 is wound with two identical coils. Phase 2 i...
4. Consider a stepper motor with two phases. Phase 1 is wound with two identical coils. Phase 2 is also wound with two identical coils. Therefore, there are eight wires that come out from the stator winding, four for each phase (a) Connect the phase terminal wires in such a way that the motor can be used as a unipolar wound motor and draw:a schematics for the amplifier circuit of the motor windings (b) Connect the phase terminal wires in...
What are the line currents, phase and line voltages of the load and source, respectively, for...
What are the line currents, phase and line voltages of the
load and source, respectively, for the following Y-Y circuit
Q1 What are the line currents, phase and line voltages of the load and source, respectively, for the following Y-Y circuit a' 020USA a 0.8 1.SNA mm.mm 120V Vw Phase votas (abc sequence Z-Z.ZZ-40 + 300. 1. The 3 line currents (of both load & source) are 2. The 3 phase voltages of the load are 3. The 3 line...
1, Two balanced three-phase loads are in parallel. Load 1 draws 10 kW at 0.8 PF...
1, Two balanced three-phase loads are in parallel. Load 1 draws 10 kW at 0.8 PF lagging Load 2 draws 20 kVA at 0.6 PF leading a. b. The loads are supplied by a balanced three-phase 480 Vu source. (a) Draw the power triangle for the combined load. (b) Determine PF of the combined load. (c) Determine the magnitude of the line current from the source. (d) Y-connected inductors are now installed in parallel with the combined load. What value...
The a-phase voltage of an ideal balanced three-phase Y-connected source is Van-13.2kV<0° and the frequency is...
The a-phase voltage of an ideal balanced three-phase Y-connected source is Van-13.2kV<0° and the frequency is 60Hertz. The source is connected to a A-connected 3-phase balanced load of 100+j750 per phase. The lines are considered perfect. The phase sequence of the source is abc Use the a-phase sequence as a reference. a) Draw the 3-phase circuit b) Give Van, Voor and V, Derive VAB and derive Vec,and VcA c) Calculate lAB and derive Isc and IcA d) Calculate the total...
Given in a three phase, Y-A circuit (i.e. the source is Y-connection, the load is A-...
Given in a three phase, Y-A circuit (i.e. the source is Y-connection, the load is A- connection), the phase voltages of the first two phases are V =22020°V, and V, 220_-120°V, respectively. What is the line voltage across the load? an
1. A 480 V (rms) source supplies power to two loads connected in parallel. The first...
1. A 480 V (rms) source supplies power to two loads connected in parallel. The first load draws 80 kW and 30 kVAR. The second load draws 100 kVA at a power factor of 0.6 lagging. a) Draw the power triangle for the first load and determine its power factor; b) Determine the current (both magnitude and phase, using the source voltage as the phase reference) drawn by the first load; c) Draw the power triangle for the second load...
A balanced Y-connected voltage source is applied to a balanced A-connected load with Zad (45-j30) ohm/phase...
A balanced Y-connected voltage source is applied to a balanced A-connected load with Zad (45-j30) ohm/phase connected, 150 kVA transformer. According to the rating of the transformer, which is on a reactance of the transformer is j0.8 per unit (ignore the magnetizing branch impedances) LOAD 13.2kV 480V Z j0.8 pu a) Utilizing a three-phase Stue of 100 kVA and transformer voltages as bases, draw the single phase b) What does the voltage (V) at the source to need to be...
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...
(4) Three single-phase AC loads draw power from the same 12020으 kms source. Load 1 draws 120 w at a lagging PF of 0.75, Load 2 draws 75 VA at a leading PF of 0.6 and Load 3 draws 100 VA at a leading PF of 0.8. Determine the complex power consumed by each load. Calculate the rms current phasor for each load. a. b.
4. Consider a stepper motor with two phases. Phase 1 is wound with two identical coils. Phase 2 is also wound with two identical coils. Therefore, there are eight wires that come out from the stator winding, four for each phase (a) Connect the phase terminal wires in such a way that the motor can be used as a unipolar wound motor and draw:a schematics for the amplifier circuit of the motor windings (b) Connect the phase terminal wires in...
What are the line currents, phase and line voltages of the
load and source, respectively, for the following Y-Y circuit
Q1 What are the line currents, phase and line voltages of the load and source, respectively, for the following Y-Y circuit a' 020USA a 0.8 1.SNA mm.mm 120V Vw Phase votas (abc sequence Z-Z.ZZ-40 + 300. 1. The 3 line currents (of both load & source) are 2. The 3 phase voltages of the load are 3. The 3 line...
1, Two balanced three-phase loads are in parallel. Load 1 draws 10 kW at 0.8 PF lagging Load 2 draws 20 kVA at 0.6 PF leading a. b. The loads are supplied by a balanced three-phase 480 Vu source. (a) Draw the power triangle for the combined load. (b) Determine PF of the combined load. (c) Determine the magnitude of the line current from the source. (d) Y-connected inductors are now installed in parallel with the combined load. What value...
The a-phase voltage of an ideal balanced three-phase Y-connected source is Van-13.2kV<0° and the frequency is 60Hertz. The source is connected to a A-connected 3-phase balanced load of 100+j750 per phase. The lines are considered perfect. The phase sequence of the source is abc Use the a-phase sequence as a reference. a) Draw the 3-phase circuit b) Give Van, Voor and V, Derive VAB and derive Vec,and VcA c) Calculate lAB and derive Isc and IcA d) Calculate the total...
Given in a three phase, Y-A circuit (i.e. the source is Y-connection, the load is A- connection), the phase voltages of the first two phases are V =22020°V, and V, 220_-120°V, respectively. What is the line voltage across the load? an
1. A 480 V (rms) source supplies power to two loads connected in parallel. The first load draws 80 kW and 30 kVAR. The second load draws 100 kVA at a power factor of 0.6 lagging. a) Draw the power triangle for the first load and determine its power factor; b) Determine the current (both magnitude and phase, using the source voltage as the phase reference) drawn by the first load; c) Draw the power triangle for the second load...
A balanced Y-connected voltage source is applied to a balanced A-connected load with Zad (45-j30) ohm/phase connected, 150 kVA transformer. According to the rating of the transformer, which is on a reactance of the transformer is j0.8 per unit (ignore the magnetizing branch impedances) LOAD 13.2kV 480V Z j0.8 pu a) Utilizing a three-phase Stue of 100 kVA and transformer voltages as bases, draw the single phase b) What does the voltage (V) at the source to need to be...
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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