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VO) L1 L2 Line VO LI Power Calculations Learning Goal: In this tutorial, you will practice...
Power Calculations 4 of 4 Review Learning Goal In this trial, you will practice the callation...
Power Calculations 4 of 4 Review Learning Goal In this trial, you will practice the callation of power in circuts cortaring loads, including the effects of non-ideal transmission Ines, and practice how to improve the power factor for an entire system. Many appliancese.. hair dryers, coffee makers, and refrigerators) and indoads are powered by AC sources The folly to be able to calculate the power needs is important ma number of towns. Before completing the Moral make sure you are...
Consider the two loads in the circuit in (Figure 1). Load #1 (L1) absorbs S =...
Consider the two loads in the
circuit in (Figure 1). Load #1 (L1) absorbs S = 56 VA at a lagging
power factor of pf = 0.61. Load #2 (L2) absorbs P2 = 56 W and Q2 =
1 VAR of power. If these loads are powered by a V = 425 V−rms ,
60-Hz source, what impedance needs to be added to the circuit in
order to raise the source's power factor to unity? Express your
answer in rectangular...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of 415.6922 V rms. The data of their power consumption are as follows. Load 1: 15 kVA at power factor of 0.75 lagging Load 2: 9 kW at power factor 0.82 lagging 1) 2) 3) 4) 5) Determine the complex power consumed by Load 1 Find the complex power consumed by Load 2 Calculate the total complex power consumed by the two loads. Determine the...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel connected loads: • Load 1 absorbs a total of 125 kW and 100 KVAR • Load 2 is a delta-connected impedance load with (125+j 40)ohms/phase • Load 3 absorbs 120 kVA at 0.8 power factor (lagging) Given that the line-neutral voltage at the load end of the line is 2400 V, determine the magnitude of the line-to- line voltage at the source end of...
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line...
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line with an impedance (0.2 +j1.0) 12/phase serves two balan to-line voltage at the load end of the line is 480 V (rms). Load 1: Wye-connected and absorbs a total of 200 kW with a lagging p.f. of 0.87. Load 2: Delta-connected with an impedance of (20+30) 2/phase. a. Draw the single phase representation of the circuit b. How much current flows through phase A...
4. In the circuit below, the impedance Z1 dissipates 10 kW with a power factor of...
4. In the circuit below, the impedance Z1 dissipates 10 kW with a power factor of 0.80 lagging. Z2 draws 14 kVA apparent power with a power factor of 0.70 leading. The frequency of the source is 60 Hz 208 V (rms)- Z1 (a) Determine the impedance Zi. (b) Determine the impedance Z2. (c) Determine the complex power Ssource for the voltage source. (d) Sketch and label the power triangle for each impedance, labeling the lengths of the sides and...
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...
Q5: The circuit show below has two loads connected to 120 V (rms), 60Hz, house-hold supply....
Q5: The circuit show below has two loads connected to 120 V (rms), 60Hz, house-hold supply. The load-1 is a resistive load (lamp) with a total power of 5 kW. The load-2 is a motor drawing 10 kVA at 0.6 power factor, lagging. The capacitor is initially not connected a) Calculate the load currents (phasor) I and 12 14] b) Calculate the supply current I c) What is the power factor of the source when it supplies to both loads?...
10. Two loads connected in parallel draw a total of 2.4 kW at 0.8 pflagging from...
10. Two loads connected in parallel draw a total of 2.4 kW at 0.8 pflagging from a 120-V rms, 60- Hz line. One load absorbs 1.5 kW at a 0.707 pf lagging. Determine: (a) the pf of the second load, INV 11. Calculate the line currents for the system shown in figure. Calculate also the total power and reactive power consumed by the load. w 12. For the balanced three-phase circuit in Fig.. Calculate the line currents, the phase voltage...
A 110-V rms,60-Hz source is applied to a load impedance Z The apparent power entering the...
A 110-V rms,60-Hz source is applied to a load impedance Z The apparent power entering the load is 120 VA at a power factor of 0.507 lagging References eBook& Resources Learning Objective: Understand apparent power power and power factor Section Break Difficulty Medium value 10.00 points Calculate the complex The complex power is VA. Hints References eBook & Resources
Power Calculations 4 of 4 Review Learning Goal In this trial, you will practice the callation of power in circuts cortaring loads, including the effects of non-ideal transmission Ines, and practice how to improve the power factor for an entire system. Many appliancese.. hair dryers, coffee makers, and refrigerators) and indoads are powered by AC sources The folly to be able to calculate the power needs is important ma number of towns. Before completing the Moral make sure you are...
Consider the two loads in the
circuit in (Figure 1). Load #1 (L1) absorbs S = 56 VA at a lagging
power factor of pf = 0.61. Load #2 (L2) absorbs P2 = 56 W and Q2 =
1 VAR of power. If these loads are powered by a V = 425 V−rms ,
60-Hz source, what impedance needs to be added to the circuit in
order to raise the source's power factor to unity? Express your
answer in rectangular...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of 415.6922 V rms. The data of their power consumption are as follows. Load 1: 15 kVA at power factor of 0.75 lagging Load 2: 9 kW at power factor 0.82 lagging 1) 2) 3) 4) 5) Determine the complex power consumed by Load 1 Find the complex power consumed by Load 2 Calculate the total complex power consumed by the two loads. Determine the...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel connected loads: • Load 1 absorbs a total of 125 kW and 100 KVAR • Load 2 is a delta-connected impedance load with (125+j 40)ohms/phase • Load 3 absorbs 120 kVA at 0.8 power factor (lagging) Given that the line-neutral voltage at the load end of the line is 2400 V, determine the magnitude of the line-to- line voltage at the source end of...
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line with an impedance (0.2 +j1.0) 12/phase serves two balan to-line voltage at the load end of the line is 480 V (rms). Load 1: Wye-connected and absorbs a total of 200 kW with a lagging p.f. of 0.87. Load 2: Delta-connected with an impedance of (20+30) 2/phase. a. Draw the single phase representation of the circuit b. How much current flows through phase A...
4. In the circuit below, the impedance Z1 dissipates 10 kW with a power factor of 0.80 lagging. Z2 draws 14 kVA apparent power with a power factor of 0.70 leading. The frequency of the source is 60 Hz 208 V (rms)- Z1 (a) Determine the impedance Zi. (b) Determine the impedance Z2. (c) Determine the complex power Ssource for the voltage source. (d) Sketch and label the power triangle for each impedance, labeling the lengths of the sides and...
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...
Q5: The circuit show below has two loads connected to 120 V (rms), 60Hz, house-hold supply. The load-1 is a resistive load (lamp) with a total power of 5 kW. The load-2 is a motor drawing 10 kVA at 0.6 power factor, lagging. The capacitor is initially not connected a) Calculate the load currents (phasor) I and 12 14] b) Calculate the supply current I c) What is the power factor of the source when it supplies to both loads?...
10. Two loads connected in parallel draw a total of 2.4 kW at 0.8 pflagging from a 120-V rms, 60- Hz line. One load absorbs 1.5 kW at a 0.707 pf lagging. Determine: (a) the pf of the second load, INV 11. Calculate the line currents for the system shown in figure. Calculate also the total power and reactive power consumed by the load. w 12. For the balanced three-phase circuit in Fig.. Calculate the line currents, the phase voltage...
A 110-V rms,60-Hz source is applied to a load impedance Z The apparent power entering the load is 120 VA at a power factor of 0.507 lagging References eBook& Resources Learning Objective: Understand apparent power power and power factor Section Break Difficulty Medium value 10.00 points Calculate the complex The complex power is VA. Hints References eBook & Resources
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