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A load impedance consists of 25 ohm resistance in series with 38 ohm inductive reactance. The...
A load impedance consists of 25 ohm resistance in series with 38 ohm inductive reactance. The load is connected across a 60 Hz, 240 V rms source. Use the voltage source as the reference (zero phase angle). a. Draw the circuit diagram. b. Calculate the value of inductance. c. Calculate the phasor value of current through the load impedance. d. Which leads, current or voltage? e. What is the phase angle between current and voltage? d. Calculate the phasor value...
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET...
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET V 4.7 uF E = 8V sin(20,000t +60° -VL + Z = ? m L = 0.5 H Figure 1 i. ii. iv. v. vi. vii. Find the total impedance Zr in polar form. Draw the impedance diagram Find the current and the voltages VR, Vi and Vc in phasor form. Draw the phasor diagram of the voltages E, VR, V., and Vc and...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of 100 ohms. The supply is unbalanced and defined as v.-127.28 cos (ot) V 127.28 sin (ot-0.5236) V n63.64 cos (ot+2.0944) V a) Draw the circuit diagram. b) Draw the three phase voltages wave forms. c) Use phasor diagram or any other method to obtain the line voltages v and d) Draw the line voltages v and v wave forms. e) Derive an...
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...
10 in Cartesian coordinates. (a) Write the complex number (b) Write the complex number (c) What...
10 in Cartesian coordinates. (a) Write the complex number (b) Write the complex number (c) What is the phasor representation of the signal 4. (2 + j4)(3-J)in Polar coordinates i = 4 sin(10t + 10%) ǐn polar coordinates? (d) What is the time domain sinusoidal represenation of the phasor if the frequency of the signal is o- 20 rad/s? I=j(5-j12) if (e) What is the time domain sinusoidal represenation of the phasor the frequency of the signal is ω-10 rad/s?...
INSTRUCTIONS: Read the questions carefully and answer the following items accordingly. Show your solution properly. Q7...
INSTRUCTIONS: Read the questions carefully and answer the following items accordingly. Show your solution properly. Q7 A technician made an experiment of an AC circuit in an electrical lab. The source voltage is AC with a frequency of 60Hz. He collected the data in the form of a phasor diagram as shown Figure 3. This phasor diagram is an impedance phasor. The values in the diagram are reactances, a resistance and current. The current in this case is the reference...
4. A 150 kVA, 460-V, four pole, 60 Hz, three phase, Y-connected synchronous motor operatingat rat...
Electric Machines - Synchronous Motors
4. A 150 kVA, 460-V, four pole, 60 Hz, three phase, Y-connected synchronous motor operatingat rated load has a synchronous reactance of 1.20 ohms/phase, determine: Excitation voltage Power angle Pull-out torque Draw a phasor diagram a. b. c. d.
4. A 150 kVA, 460-V, four pole, 60 Hz, three phase, Y-connected synchronous motor operatingat rated load has a synchronous reactance of 1.20 ohms/phase, determine: Excitation voltage Power angle Pull-out torque Draw a phasor diagram a....
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of...
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of the Sine function. 0.25 F 12 H 222 1H = 0.5 F {52 8 sin (2t + 30°) V Zeq + 1. Draw phasor domain circuit. (4 points) 2. Find Zee for the circuit as seen from input voltage source. (6 points) 3. Draw Zeq phasor. (2 points) 4. Find resistance and reactance for Zeq. Is the reactance capacitive or inductive? (3 points) 5....
1. A star connected secondary of a 60 Hz 3-phase transformer, as shown in Fig. 3, is supplying a ...
1. A star connected secondary of a 60 Hz 3-phase transformer, as shown in Fig. 3, is supplying a 3-phase HW uncontrolled rectifier loaded with a pure 10 Ω resistor. The fuse Fy is open circuit. L. Determine the conduction periods of the diodes ii Draw the waveform of the output voltage. F1 D D and D in msec. phase A iii. Calculate the secondary line voltage if the average iv. Draw the waveforms of the supply currents i, and...
I'm absolutely stuck on this, please show work and explain. + 1+ Vo R & Vo...
I'm absolutely stuck on this, please show work and explain.
+ 1+ Vo R & Vo R FIG I: RC CIRCUIT FIG 2: RL CIRCUIT A. View the RC circuit in Fig. 1. 1) Assume an input sinusoidal voltage with frequency f=50kHz, R=4.7kN and C= 0.01°F (#103). Compute the phase difference between Vo and Vi. 2) Plot the amplitude for the voltage ratio vs. frequency. 3) Determine the characteristic frequency (fc). 4) Assume a step function input voltage (Vi) applied...
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET V 4.7 uF E = 8V sin(20,000t +60° -VL + Z = ? m L = 0.5 H Figure 1 i. ii. iv. v. vi. vii. Find the total impedance Zr in polar form. Draw the impedance diagram Find the current and the voltages VR, Vi and Vc in phasor form. Draw the phasor diagram of the voltages E, VR, V., and Vc and...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of 100 ohms. The supply is unbalanced and defined as v.-127.28 cos (ot) V 127.28 sin (ot-0.5236) V n63.64 cos (ot+2.0944) V a) Draw the circuit diagram. b) Draw the three phase voltages wave forms. c) Use phasor diagram or any other method to obtain the line voltages v and d) Draw the line voltages v and v wave forms. e) Derive an...
10 in Cartesian coordinates. (a) Write the complex number (b) Write the complex number (c) What is the phasor representation of the signal 4. (2 + j4)(3-J)in Polar coordinates i = 4 sin(10t + 10%) ǐn polar coordinates? (d) What is the time domain sinusoidal represenation of the phasor if the frequency of the signal is o- 20 rad/s? I=j(5-j12) if (e) What is the time domain sinusoidal represenation of the phasor the frequency of the signal is ω-10 rad/s?...
INSTRUCTIONS: Read the questions carefully and answer the following items accordingly. Show your solution properly. Q7 A technician made an experiment of an AC circuit in an electrical lab. The source voltage is AC with a frequency of 60Hz. He collected the data in the form of a phasor diagram as shown Figure 3. This phasor diagram is an impedance phasor. The values in the diagram are reactances, a resistance and current. The current in this case is the reference...
Electric Machines - Synchronous Motors
4. A 150 kVA, 460-V, four pole, 60 Hz, three phase, Y-connected synchronous motor operatingat rated load has a synchronous reactance of 1.20 ohms/phase, determine: Excitation voltage Power angle Pull-out torque Draw a phasor diagram a. b. c. d.
4. A 150 kVA, 460-V, four pole, 60 Hz, three phase, Y-connected synchronous motor operatingat rated load has a synchronous reactance of 1.20 ohms/phase, determine: Excitation voltage Power angle Pull-out torque Draw a phasor diagram a....
Question #01 (30 points) Consider the following circuit. Let us define the phasors in terms of the Sine function. 0.25 F 12 H 222 1H = 0.5 F {52 8 sin (2t + 30°) V Zeq + 1. Draw phasor domain circuit. (4 points) 2. Find Zee for the circuit as seen from input voltage source. (6 points) 3. Draw Zeq phasor. (2 points) 4. Find resistance and reactance for Zeq. Is the reactance capacitive or inductive? (3 points) 5....
1. A star connected secondary of a 60 Hz 3-phase transformer, as shown in Fig. 3, is supplying a 3-phase HW uncontrolled rectifier loaded with a pure 10 Ω resistor. The fuse Fy is open circuit. L. Determine the conduction periods of the diodes ii Draw the waveform of the output voltage. F1 D D and D in msec. phase A iii. Calculate the secondary line voltage if the average iv. Draw the waveforms of the supply currents i, and...
I'm absolutely stuck on this, please show work and explain.
+ 1+ Vo R & Vo R FIG I: RC CIRCUIT FIG 2: RL CIRCUIT A. View the RC circuit in Fig. 1. 1) Assume an input sinusoidal voltage with frequency f=50kHz, R=4.7kN and C= 0.01°F (#103). Compute the phase difference between Vo and Vi. 2) Plot the amplitude for the voltage ratio vs. frequency. 3) Determine the characteristic frequency (fc). 4) Assume a step function input voltage (Vi) applied...
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