Which of the following statements is incorrect? (a) reactive power for capacitive loads is negative (b)...
Which of the following statements is incorrect?
(a) reactive power for capacitive loads is negative
(b) inductive loads have lagging power factor
(c) apparent power is the magnitude of complex power
(d) complex power for resistive loads is zero.
Homework Answers
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Which of the following statements is
incorrect?
(a) reactive power for capacitive loads is negative
(b)...
9. See Figure 8 consisting of a voltage source and two loads (A and B). Which...
9. See Figure 8 consisting of a voltage source and two loads (A and B). Which of the following statements is true: a) The apparent power in load A is larger than the apparent power in load B. b) The reactive power in load A is smaller than the reactive power in load B. c) Both loads A and B have negative reactive power. d) The reactive power in load A is larger than the reactive power in load B....
For parallel loads given, with load 2 is inductive (L), while load 3 is capacitive (C)....
For parallel loads given, with load 2 is inductive (L), while load 3 is capacitive (C). Find the total a. average power, b. reactive power, c. apparent power, d. overall power factor pf of the network given. Load | 1 Load 2 Load 3 V = 220 V 20° O VAR 100 W 700 VAR (L) 200 W 1500 VAR (C) 300 W 10
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current...
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current 30A, power factor 0.85 lagging, and Load 2: measured power 10kW, reactive power -7.5kVar A. Determine the power factor of load 2. B. Determine the total real power (in kW), reactive power (in kVAR), apparent power (in kVA), power factor and line current (in A) of the two loads.
Two loads, A and B, are connected in parallel across a 1-kV-rms 60-Hz line, as shown...
Two loads, A and B, are connected in parallel
across a 1-kV-rms 60-Hz line, as shown in (Figure 1). Load
Aconsumes 10 kW with a 60 percent lagging power factor.
Load B has an apparent power of 20 kVA with an 80 percent
lagging power factor.
a) Find the power delivered by the source.
b) Find the reactive power delivered by the source.
c) Find the apparent power delivered by the source.
d) What is the power factor seen by...
For the following voltage and current phasors, calculate the complex power, apparent power, real power, and...
For the following voltage and current phasors, calculate the complex power, apparent power, real power, and reactive power. Determine whether the power factor is leading or lagging. V = 260 230 Vrms, I0.5260 Arms The value of apparent power is VA The value of real power is W. VAR. The value of reactive power is The power factor is Click to select B
Task 1 (10 Marks) A single phase inductive-resistive-capacitive (LRC) series load is energised from a 240V,...
Task 1 (10 Marks) A single phase inductive-resistive-capacitive (LRC) series load is energised from a 240V, 50Hz supply as shown in Fig. Q1. LRC n Fig. Q1 The supply current is measured as supply and the power factor of the LRC load is found to be cose leading. The capacitance value C is known, however the resistance R and inductance L are unknown. The values for supplycosa and Care to be obtained from the excel spread sheet as explained in...
The following three-phase, balanced loads are connected across a three-phase, Y-connected 60 Hz source with a...
The following three-phase, balanced loads are connected across a three-phase, Y-connected 60 Hz source with a line-to-line voltage of 480 V. The loads are described below: • Load 1: ∆-connected, total three-phase apparent power is 30 kVA at 0.95 power factor lagging. • Load 2: ∆-connected, total three-phase active power is 20 kW at 0.7 power factor lagging. • Load 3: Y-connected, phase current is 30 A, and power factor is 0.9 pf leading. (a) Calculate the total complex power...
a) At which frequency range is impedance of series RC circuit predominantly capacitive, predominantly resistive, and...
a) At which frequency range is impedance of series RC circuit predominantly capacitive, predominantly resistive, and when are both capacitive and resistive effects equal? b) At which frequency range is impedance of parallel RC circuit predominantly capacitive, predominantly resistive, and when are both capacitive and resistive effects equal? c) At which frequency range is impedance of series RL circuit predominantly inductive, predominantly resistive, and when are both inductive and resistive effects equal? d) At which frequency range is impedance of...
1. (10 points total) A source supplies power to the following three loads connected in parallel:...
1. (10 points total) A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW, (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp 0.746 kW). (a) Determine the real, reactive, and apparent power delivered by the source. (8 points)
Please show all work and concepts 5.2 (15 pts) In the following circuit, voltage source V...
Please show all work and concepts
5.2 (15 pts) In the following circuit, voltage source V 10020° V, 60 Hz supplies power to three load circuits with impedances Z1, Z2, and Z3. The following information was deduced from measurements performed on the three load circuits Load Z1: 45 W at pf 0.95 lagging Load Z2: 70 VA at pf 0.75 leading Load Z3: 100 VA at pf = 0.6 lagging (a) Are Z1, Z2, and Z3 inductive or capacitive? (b)...
9. See Figure 8 consisting of a voltage source and two loads (A and B). Which of the following statements is true: a) The apparent power in load A is larger than the apparent power in load B. b) The reactive power in load A is smaller than the reactive power in load B. c) Both loads A and B have negative reactive power. d) The reactive power in load A is larger than the reactive power in load B....
For parallel loads given, with load 2 is inductive (L), while load 3 is capacitive (C). Find the total a. average power, b. reactive power, c. apparent power, d. overall power factor pf of the network given. Load | 1 Load 2 Load 3 V = 220 V 20° O VAR 100 W 700 VAR (L) 200 W 1500 VAR (C) 300 W 10
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current 30A, power factor 0.85 lagging, and Load 2: measured power 10kW, reactive power -7.5kVar A. Determine the power factor of load 2. B. Determine the total real power (in kW), reactive power (in kVAR), apparent power (in kVA), power factor and line current (in A) of the two loads.
Two loads, A and B, are connected in parallel
across a 1-kV-rms 60-Hz line, as shown in (Figure 1). Load
Aconsumes 10 kW with a 60 percent lagging power factor.
Load B has an apparent power of 20 kVA with an 80 percent
lagging power factor.
a) Find the power delivered by the source.
b) Find the reactive power delivered by the source.
c) Find the apparent power delivered by the source.
d) What is the power factor seen by...
For the following voltage and current phasors, calculate the complex power, apparent power, real power, and reactive power. Determine whether the power factor is leading or lagging. V = 260 230 Vrms, I0.5260 Arms The value of apparent power is VA The value of real power is W. VAR. The value of reactive power is The power factor is Click to select B
Task 1 (10 Marks) A single phase inductive-resistive-capacitive (LRC) series load is energised from a 240V, 50Hz supply as shown in Fig. Q1. LRC n Fig. Q1 The supply current is measured as supply and the power factor of the LRC load is found to be cose leading. The capacitance value C is known, however the resistance R and inductance L are unknown. The values for supplycosa and Care to be obtained from the excel spread sheet as explained in...
1. (10 points total) A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW, (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp, 85% efficiency and 0.95 power factor leading (1 hp 0.746 kW). (a) Determine the real, reactive, and apparent power delivered by the source. (8 points)
Please show all work and concepts
5.2 (15 pts) In the following circuit, voltage source V 10020° V, 60 Hz supplies power to three load circuits with impedances Z1, Z2, and Z3. The following information was deduced from measurements performed on the three load circuits Load Z1: 45 W at pf 0.95 lagging Load Z2: 70 VA at pf 0.75 leading Load Z3: 100 VA at pf = 0.6 lagging (a) Are Z1, Z2, and Z3 inductive or capacitive? (b)...
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