Show equations for obtaining the average real power P and the average reactive power Q based...
Show equations for obtaining the average real power P and the average reactive power Q based on the three-wattmeter measurements P1 , P2 , and P3 P, 2 P , and 3 P as well as the voltage and current measurements Vl-l and Irms. With this information, is it possible to determine the sign of the reactive power (and thus the power factor of the load).
Homework Answers
We can determine angle of power factor that will have sign
positive or negative (as per calculation from 
angle equation )
Accordingly , we can tell leading or lagging nature of load and so we can tell sign of reactive power
Simultaneously we can find power factor of load using equation
of cos
as shown above !!
Add Answer to:
Show equations for obtaining the average real power P and the
average reactive power Q based...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure 8.3 is 10 A and the measured power is 900 W. Consider that the wattmeter is ideal (doesn't change the voltage and current through the load) and determine: a) The resistance of the motor coil (R); b) The inductance of the motor coil (L); c) The power factor of the motor coil (cosp) d) The complex power (S); e) The reactive power (Q): f...
Based on the motor nameplate below, when operated at the rated voltage and current, determine the following: a. The real power, P, reactive power, Q, and apparent power, S, used by the motor. b. Sketc...
Based on the motor nameplate below, when operated at the rated
voltage and current, determine the following:
a. The real power, P, reactive power, Q, and
apparent power, S, used by the motor.
b. Sketch an equivalent circuit to model for
the motor.
c. The efficiency of the motor (calculated from
shaft power/real power in).
d. What value of capacitor would you use to
correct the power factor to 1?
e. Sketch a vector diagram showing the phasor
current in...
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be co...
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be compensated by adding shunt capacitors. The network frequency is known as 50 Hz. The load resistances are R 330ΣΩ and the load inductances are L H. The phasor of the voltage for R phase is given as V 220/2 Volts. a) Find the followings before connecting the power factor compensation capacitors: i) The effective values of the line currents IR, Is, IT, ii)...
Need help solving the circuit with 120V 60Hz power network 21 Set up the circuit shown...
Need help solving the circuit with 120V 60Hz power network
21 Set up the circuit shown in Figure 3. + L1 11 + Ri E1 Xci R3. L2 X3 E2 Xc2 L3 12 XC1,XC2, XC3 R1,R2,R3 (O Local ac power network Frequency (Hz) Voltage (V) 240 171 60 120 880 629 50 220 960 686 50 240 Figure 3. Balanced, three-wire, delta-connected, three-phase circuit set up for power measurements using the two-wattmeter method. 22 in order to obtain the resistance...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In the...
4.4 Voltage regulating transformer. Consider the following circuit in which the generator real and reactive power...
4.4 Voltage regulating transformer. Consider the following circuit in which the generator real and reactive power output is 100.0 MW and -50 MVAr respec- tively: the generator voltage is 1.02 pu; the transformer impedance is Zt = 0.01 + 0.15 pu on a base of 180 MVA; and the transformer off-nominal tap setting is t-1.05 pu. Calculate the voltage magnitude at the network terminals. til P+jQ ZE Network Figure 3: Problem 4.4 - Circuit calculation with transformer off-nominal taps. 4.5...
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...
VO) L1 L2 Line VO LI Power Calculations Learning Goal: In this tutorial, you will practice...
VO) L1 L2 Line VO LI Power Calculations Learning Goal: In this tutorial, you will practice the calculation of power in circuits containing loads, including the effects of non-ideal transmission lines, and practice how to improve the power factor for an entire system. Many appliances (eg., hair dryers, coffee makers, and refrigerators) and industrial loads are powered by AC sources. The ability to be able to calculate their power needs is important in a number of situations. Before completing this...
Please show step for step and, all equations used. Thank you. 1) For the power supply circuit: 120v Dc. 6Oh time values on your sketch E. hat is the DC load Current? 7 C. What is the average curre...
Please show step for step and, all equations used. Thank
you.
1) For the power supply circuit: 120v Dc. 6Oh time values on your sketch E. hat is the DC load Current? 7 C. What is the average current in each diode? I = D. what is th peak current in each uld be reqLlired to redLICe the E. What minimLm va l Lle.Pf capac i tor 120v 7 1 For the power suipply circuit: ツー time values on Your...
solve no: 3.14 , 3.16, 3.19 please show each step and solve for beginners 120 Power...
solve no: 3.14 , 3.16, 3.19
please show each step and solve for beginners
120 Power System Analysis 3.12. A single-phase system similar to that shown in Figure 3.11 has two transformers A-B a B-C connected by a line B feeding a load at the receiving end C. The ratings and parame ter values of the components are 500 V/1.5 kV, 9.6 kVA. leakage reactance 5 % 1.2 kV/120 V, 7.2 kVA, leakage reactance 4 % series impedance (0.5 +...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure 8.3 is 10 A and the measured power is 900 W. Consider that the wattmeter is ideal (doesn't change the voltage and current through the load) and determine: a) The resistance of the motor coil (R); b) The inductance of the motor coil (L); c) The power factor of the motor coil (cosp) d) The complex power (S); e) The reactive power (Q): f...
Based on the motor nameplate below, when operated at the rated
voltage and current, determine the following:
a. The real power, P, reactive power, Q, and
apparent power, S, used by the motor.
b. Sketch an equivalent circuit to model for
the motor.
c. The efficiency of the motor (calculated from
shaft power/real power in).
d. What value of capacitor would you use to
correct the power factor to 1?
e. Sketch a vector diagram showing the phasor
current in...
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be compensated by adding shunt capacitors. The network frequency is known as 50 Hz. The load resistances are R 330ΣΩ and the load inductances are L H. The phasor of the voltage for R phase is given as V 220/2 Volts. a) Find the followings before connecting the power factor compensation capacitors: i) The effective values of the line currents IR, Is, IT, ii)...
Need help solving the circuit with 120V 60Hz power network
21 Set up the circuit shown in Figure 3. + L1 11 + Ri E1 Xci R3. L2 X3 E2 Xc2 L3 12 XC1,XC2, XC3 R1,R2,R3 (O Local ac power network Frequency (Hz) Voltage (V) 240 171 60 120 880 629 50 220 960 686 50 240 Figure 3. Balanced, three-wire, delta-connected, three-phase circuit set up for power measurements using the two-wattmeter method. 22 in order to obtain the resistance...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In the...
4.4 Voltage regulating transformer. Consider the following circuit in which the generator real and reactive power output is 100.0 MW and -50 MVAr respec- tively: the generator voltage is 1.02 pu; the transformer impedance is Zt = 0.01 + 0.15 pu on a base of 180 MVA; and the transformer off-nominal tap setting is t-1.05 pu. Calculate the voltage magnitude at the network terminals. til P+jQ ZE Network Figure 3: Problem 4.4 - Circuit calculation with transformer off-nominal taps. 4.5...
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...
VO) L1 L2 Line VO LI Power Calculations Learning Goal: In this tutorial, you will practice the calculation of power in circuits containing loads, including the effects of non-ideal transmission lines, and practice how to improve the power factor for an entire system. Many appliances (eg., hair dryers, coffee makers, and refrigerators) and industrial loads are powered by AC sources. The ability to be able to calculate their power needs is important in a number of situations. Before completing this...
Please show step for step and, all equations used. Thank
you.
1) For the power supply circuit: 120v Dc. 6Oh time values on your sketch E. hat is the DC load Current? 7 C. What is the average current in each diode? I = D. what is th peak current in each uld be reqLlired to redLICe the E. What minimLm va l Lle.Pf capac i tor 120v 7 1 For the power suipply circuit: ツー time values on Your...
solve no: 3.14 , 3.16, 3.19
please show each step and solve for beginners
120 Power System Analysis 3.12. A single-phase system similar to that shown in Figure 3.11 has two transformers A-B a B-C connected by a line B feeding a load at the receiving end C. The ratings and parame ter values of the components are 500 V/1.5 kV, 9.6 kVA. leakage reactance 5 % 1.2 kV/120 V, 7.2 kVA, leakage reactance 4 % series impedance (0.5 +...
Most questions answered within 3 hours.
-
Seniority is central in many private and public sector union
contracts in the United States. What...
asked 3 minutes ago -
I have 20 children in my class, and I’m going to pick five of
them to...
asked 10 minutes ago -
Assume the $19,500 Treasury bill, 4% for 15 weeks. Calculate the
effective rate of interest. (Use...
asked 10 minutes ago -
Which of these strings is in the language {vwv: v,w has an
element of {a,b}*, |w|=3}...
asked 8 minutes ago -
Java Data Structures
Develop the algorithm for a program that will do the
following:
* Prompt...
asked 11 minutes ago -
Please help with this Chemistry Gas Law Problem
A 25.0L Oxygen cylinder contains 3.70mols of O2...
asked 19 minutes ago -
how
many constitutional isomers are possible when
3-ethyl-4-methylhexane is monochlorinated ?
asked 19 minutes ago -
The convergence theory suggests:
that poorer countries will grow faster than rich ones.
all countries eventually...
asked 24 minutes ago -
1. The key regulatory enzyme of cholesterol synthesis is
A. HMG CoA synthase
B. HMG CoA...
asked 36 minutes ago -
3. For the small data set shown below, calculate the mean,
median, and mode by hand....
asked 42 minutes ago -
which is incorrect?
struct myStruct
{
int i;
double d;
};
class myClass
{
public:
int...
asked 1 hour ago -
A galvanic cell has an iron electrode in contact with 0.19
MFeSO4 and a copper electrode...
asked 46 minutes ago