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Problem 3. The circuit, shown below, is composed of four transmission lines, T1, T2, T3, and...
Problem 3. The circuit, shown below, is composed of four transmission lines, T1, T2, T3, and T4. Load impedance connected to the line T3 includes the resistor R1- 100 ohms and the parallel capacitor C1-30 pF. Determine the lengths of the transmission lines T2 (11) and T4 with open end (1 2) to match the impedance observed from the output terminals of the transmission line of TI (point A) to 50 ohms. The frequency, f-100 MHz. Assume air dielectric of...
Refer to the circuit diagram depicted in Figure 1 below 10245V 20 20V (3-4021 10 22...
Refer to the circuit diagram depicted in Figure 1 below 10245V 20 20V (3-4021 10 22 3.1 Figure 1 Determine the Thevenin equivalent impedance of the network provided in figure 1 (Show all steps) 3.2 Calculate the open circuit voltage VAD 3.3 Draw the Thevenin equivalent circuit of the network and determine the current through a load Z=332 + 14 41 connected across AB terminals (5) [12]
A three-phase line, which has an impedance of (2 + j4) Ω per phase, feeds two...
A three-phase line, which has an impedance of (2 + j4) Ω per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y- connected with an impedance of (30 + j40) Ω per phase, and the other is delta- connected with an impedance of (60 + j45) Ω per phase. The line is energized at the sending end from a 60-Hz, three phase, balanced voltage source of 120√3 V (rms, line- to-line). Determine...
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an...
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an aboc phase-sequence and is connected in delta. There are two rallel wye-connected loads. The phase impedance of load i and load 2 is 4 The line impedance connecting the source to the loads is 0.3 + j0.2 2. If the curre IAN! = 10/20-Arms, find the delta currents in the source 4 Ω and 10 +/4 Ω, respectively. nt in the a phase of...
Reinforcement Problem # 6 (15 pts.) A) Given For the AC circuit in the frequency domain...
Reinforcement Problem # 6 (15 pts.) A) Given For the AC circuit in the frequency domain given: 420 A ( 22 2j2 B) Determine Determine: 1) The Thévenin equivalent circuit with respect to the terminals "a" and "b 2) The impedance Zi for a maximum average power transfer to the load. 3) The value of the maximum average power at the load Zu. Evaluation Criteria Rubric for Reinforcement Problem # 6 Points Activities Answer 1) Answer 2) Answer 3) Show...
R1 C1 HH The V1 R2 11 R3 circuit shown is a simplified representation of a...
R1 C1 HH The V1 R2 11 R3 circuit shown is a simplified representation of a small signal transistor amplifier circuit. The AC input voltage is V1, with angular frequency w. The current through R2, is It. The dependent current source, 11, has value 100 IV. Let R1 = 500, and R2 = 1000. The load resistor, R3 has a value that is selectable by a design engineer. Let C1 = 10 pF, and L1 = 1 uH. (For reference,...
(a) Given a circuit in Figure Q4(a): (1) State the condition for maximum average power transfer...
(a) Given a circuit in Figure Q4(a): (1) State the condition for maximum average power transfer to the load impedance. Z (2 marks) (1) Determine the load impedance, Z (4 marks) (in) Find the maximum average power (5 marks) Lt mm JI R RE 492 120° A 20 C. 70.502 W ZL 1 Figure Q4(a) An air conditioner operates at 240V... at a frequency of 60 Hz. It absorbs an average power of 9 kW at a lagging power factor,...
Q1) Two ideal voltage sources designated as machines 1 and 2 are connected as shown in...
Q1) Two ideal voltage sources designated as machines 1 and 2 are connected as shown in Figure 1. If E! = 100.200 V, E-100し300 V and Z = 0 +JS a) Determine whether each machine is generating or consuming real power and the amount b) Determine whether each machine is receiving or supplying reactive power and the amount c) Determine the P and Q absorbed by the impedance 2 #2 Figure 1: Ideal voltage sources connected through impedance Z Q2)...
INTRODUCTION TO POWER SYSTEM
1. The one-line diagram of a three-pha se power system is shown in Figure 3.29. Select a common base of 100 MVA and 15 kV on the motor side. Draw an impedance diagram with all impedances including the load impedance marked in per-unit. The manufacturer's data for each device is given as follow:The three-phase load at bus 4 absorbs 57 MVA, 0.6 power factor lagging at 10.45 kV. Line 1 and line 2 have reactances of 48.4 Ω and 65.43...
QUESTION 2. (a) A portion of a power system consists of two generators in parallel, connected...
QUESTION 2. (a) A portion of a power system consists of two generators in parallel, connected to a step-up transformer that links them with a 220-kV transmission line. The ratings of these components are as shown below: Generator GI: 10 MVA, 12 percent reactance Generator G2: 5 MVA, 8 percent reactance Transformer: 15 MVA, 6 percent reactance Transmission line: (4+j60) 22, 220kV where the percent reactances are computed on the basis of individual component ratings. Draw the per-unit impedance diagram...
Problem 3. The circuit, shown below, is composed of four transmission lines, T1, T2, T3, and T4. Load impedance connected to the line T3 includes the resistor R1- 100 ohms and the parallel capacitor C1-30 pF. Determine the lengths of the transmission lines T2 (11) and T4 with open end (1 2) to match the impedance observed from the output terminals of the transmission line of TI (point A) to 50 ohms. The frequency, f-100 MHz. Assume air dielectric of...
Refer to the circuit diagram depicted in Figure 1 below 10245V 20 20V (3-4021 10 22 3.1 Figure 1 Determine the Thevenin equivalent impedance of the network provided in figure 1 (Show all steps) 3.2 Calculate the open circuit voltage VAD 3.3 Draw the Thevenin equivalent circuit of the network and determine the current through a load Z=332 + 14 41 connected across AB terminals (5) [12]
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an aboc phase-sequence and is connected in delta. There are two rallel wye-connected loads. The phase impedance of load i and load 2 is 4 The line impedance connecting the source to the loads is 0.3 + j0.2 2. If the curre IAN! = 10/20-Arms, find the delta currents in the source 4 Ω and 10 +/4 Ω, respectively. nt in the a phase of...
Reinforcement Problem # 6 (15 pts.) A) Given For the AC circuit in the frequency domain given: 420 A ( 22 2j2 B) Determine Determine: 1) The Thévenin equivalent circuit with respect to the terminals "a" and "b 2) The impedance Zi for a maximum average power transfer to the load. 3) The value of the maximum average power at the load Zu. Evaluation Criteria Rubric for Reinforcement Problem # 6 Points Activities Answer 1) Answer 2) Answer 3) Show...
R1 C1 HH The V1 R2 11 R3 circuit shown is a simplified representation of a small signal transistor amplifier circuit. The AC input voltage is V1, with angular frequency w. The current through R2, is It. The dependent current source, 11, has value 100 IV. Let R1 = 500, and R2 = 1000. The load resistor, R3 has a value that is selectable by a design engineer. Let C1 = 10 pF, and L1 = 1 uH. (For reference,...
(a) Given a circuit in Figure Q4(a): (1) State the condition for maximum average power transfer to the load impedance. Z (2 marks) (1) Determine the load impedance, Z (4 marks) (in) Find the maximum average power (5 marks) Lt mm JI R RE 492 120° A 20 C. 70.502 W ZL 1 Figure Q4(a) An air conditioner operates at 240V... at a frequency of 60 Hz. It absorbs an average power of 9 kW at a lagging power factor,...
Q1) Two ideal voltage sources designated as machines 1 and 2 are connected as shown in Figure 1. If E! = 100.200 V, E-100し300 V and Z = 0 +JS a) Determine whether each machine is generating or consuming real power and the amount b) Determine whether each machine is receiving or supplying reactive power and the amount c) Determine the P and Q absorbed by the impedance 2 #2 Figure 1: Ideal voltage sources connected through impedance Z Q2)...
QUESTION 2. (a) A portion of a power system consists of two generators in parallel, connected to a step-up transformer that links them with a 220-kV transmission line. The ratings of these components are as shown below: Generator GI: 10 MVA, 12 percent reactance Generator G2: 5 MVA, 8 percent reactance Transformer: 15 MVA, 6 percent reactance Transmission line: (4+j60) 22, 220kV where the percent reactances are computed on the basis of individual component ratings. Draw the per-unit impedance diagram...
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