Answered: Two wattmeter method is applied to a…

Two wattmeter method is applied to a balanced 3 phase load. Two wattmeter indicate 84.5 KW and 64.7 KW respectively. What is the power factor of the balanced 3 phase load?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.23P: A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the...

See similar textbooks

Related questions

Q: f) A network has two branches in parallel. One branch contains impedance Za and the other branch has…

A: Given data, Two branches connected in parallel, Circuit diagram is given by,

Q: 2. What is the voltage across the resistor R2 below (VR2)? 5A ↑40 3A ↑ R2=30 VR2

A: Given data, Given circuit diagram is,

Q: 29. Determine Zx in the circuit shown below. * + I= 31.5 (24° A V-50/60v 1+j10 2+j20 3+j30 O 4+ j40…

Q: Problem 9: Find the Thevenin equivalent circuit for the following circuit with respect to the…

A: Given:

Q: For a Buck converter you need to calculate what range of duty cycles a controller needs to meet the…

A: Given buck converter, Input voltage = VDC = 80 v to 120 v. Output voltage = V0 = 100 v. Output…

Q: The period of the voltage 2 cos 4500πt + 7 sin 7500πt is

Q: A moving coil instrument requires 20mA and 100mV for full-scale deflection. What is the value of the…

A: Given data, Full scale deflection current Im=20 mA Full scale deflection voltage Vm=100 mV Current…

Q: State and explain Carson's Bandwidth Frmula. Need urgently help.

A: In the following section, Carson's bandwidth formula has been explained.

Q: 1) A coil composed of 100 turns has an inductance of 5 mH. If the number of turns is doubled without…

A: Given: A coil has following specifications, Initial turs, N1=100 Inductance, L1=5 mH Number of turns…

Q: 19. How much is the installed capacity globally and how much was added during 2019/2021 for the…

A: Introduction: Solar PV generation increased a record 156 TWh (23%) in 2021 to reach 821 TWh. It…

Q: Calculate the maximum frequency deviation for the FM signal v(t) = 10 cos (6000t+ 5sin2200t) a. 2200…

Q: In a 4-pole wave connected d.c. motor has 752 armature conductors. If armature current is 38.2 Amp.…

A: We have been asked to find torque developed in d.c. motor having following data, Pole of motor (P) =…

Q: What is the mass of an assembly of 1000 electrons?

A: In this case, the mass of an assembly of 1000 electrons is to be determined.

Q: The Exponential Fourier series of a periodic function with fundamental frequency wo= rad/s is given…

Q: Total resistance between terminals A and B is A. Β 10 Ω ΦΩ 10 S ΦΩ Ω

A: Given data, Circuit diagram is given as,

Q: Que 27. Find the current I, using source transformation in Fig. 2.7.1. 12 V 40 www 100 20 Www 50024

A: Source transformation:- It is used to simplify the circuit for calculation purposes. In this…

Q: 1. Determine the partial fraction expansion for V(s) and compute the inverse Laplace transform. The…

Q: (6) Find the Boolean expression for logic circuit shown in Fig.1 below and reduce it using Boolean…

A: We need to find logic expression of given circuit

Q: 12. The speed of the rotating flux in Fig. 20.16 will be (i) 1500 r.p.m. (iii) 750 r.p.m. (ii) 1000…

Q: A numeric system (e.g. a numeric keypad) generates numbers 0 to 9 in binary. You are asked to design…

A: To approach for the given problem first assume some inputs to the above numeric system.Since result…

Q: Problem2 A source with a voltage of Vs = 5270° and an impedance of Z, = 50-j20 2 is connected to a…

A: Given, The source voltage VS=5∠70° The characteristic impedance of transmission line 1 Z01=50Ω The…

Q: cedb-e70a-017569bcae60/ecam kderi - Go OI Wallpaper Abyss-- Istanbul Online Ye. 8 am 1A MASTERCHEF…

A: Given- ε= 20 V L= 0.05 H R0 = 3 ohm R1 = 1 ohm R2 = 4 ohm R3 = 4 ohm R4 = 4 ohm R5 = 5 ohm R6 = 3…

Q: A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has…

A: We have an single-phase half controlled rectifier which is driving separately excited dc motor.…

Q: If the Fault current is 5 kA and Current Setting is 125% then Plug Setting Multiplier (PSM) will be…

A: Given, Fault current = 5 kA = 5000 A Current setting = 125% = 1.25 Rated secondary current = 1 A CT…

Q: (c) The rotor speed of a six-pole 50-cycle inductio motor is 960 rpm. Calculate the percent slip.

A: Given: In an induction motor, P=6f=50 HzNr=960 rpm

Q: An antenna having a radiation resistance of 7502 is radiating 10 kW. How much current flows into the…

A: Given information: The radiation resistance of the antenna is Rr=75 Ω. The power radiated by the…

Q: g) f(t) = 5cos2t + 3e4t h) f(t)et + sin(t-2) + 1²e-²1

Q: Question 2 View the chart on the characteristics of electromagnetic and mechanical waves and answer…

A: The given chart is shown below:

Q: image480

Q: An alternating voltage is given by e= 200 sin 2π 50t . Then find the time taken to + 60 V for the…

Q: Consider the one-sided exponential function f(t) = A e is the unit step function, a > 0, and A > 0.…

A: Given: ft=Ae-αtut, α>0 and A>0

Q: The coil. span со

A: Given: 4 Pole three phase, 60 Hz, 24 stator slots synchronous generator. the coil pitch factor of…

Q: The phase shift oscillator circuit shown, is designed to oscillate at 155 [Hz]. Determine the value…

A: The phase shift oscillator circuit shown, is designed to oscillate at 155 [Hz]. Determine the value…

Q: 1. A certain voltage doubler has 20 Vrms on its input. What is the output voltage? Draw the circuit,…

A: Since you have asked multiple questions, we will solve the first question for you If you want any…

Q: Continuing with a 32 Khz system clock/8000 Khz instruction clock, assuming a pre-scalar of 1:1 (i.e.…

A: According to the question, for continuing with a 32 kHz system clock/8000 kHz instruction clock,…

Q: 120 v FR₂=15_12² Find the V1, V2, V3, V4, V5, V6, V7 24 = 20-2 W R₁ = 10-22 · R3 =1512 R5-=25/12 R6…

A: A circuit with one dc voltage source, 7 resistances in variety combinations. we have to find out…

Q: An LTI system is described the its impulse response h(t).

A: Given- ht=e-atutxt=but where, a=4 b=10 To find- y(t) and y(t=9) =?

Q: The effective armature resistance of a 3-phase, star connected, 500 kVA, 1100 V alternator is 0.1 £…

Q: Question 1 Quuo Determine the amount of current (mA) flowing in the circuit if the charge seen at…

A: Given: Charge seen at cross sectional area, Q=0.0052C Time, t=30ms

Q: Current source shown below is converted in to voltage source. Choose the correct voltage source…

Q: Minimize the logic function Y(A,B,C,D)= Em(0,1,2,3,5,7,8,9,11,14). Use Karnaugh map. Draw logic…

A: Given logic function has 4 inputs, A, B, C, and D YA,B,C,D=∑m0,1,2,3,5,7,8,9,11,14 We have to…

Q: Solve for the equivalent resistance and the total current. 48 V 4Ω 20 Ω www 5Ω 24 Ω ΑΛΛΑ 8 Ω 15 Ω…

Q: V1 30 V Resistor 40 Ω 1 2 Capacitor 15μF Resistor 792

Q: Find the Boolean expression for logic circuit shown in Fig.1 below and reduce it using Boolean…

Q: Q.) The circuit shown below is an idealized forward converter. Assuming an input voltage Va=40V,…

A: By utilizing a transformer, the forward converter is a DC to DC converter raises or decreases the…

Q: Prove the following Boolean identities. (i) XY+YZ+ YZ=XY+Z (ii) A.B+A.B+A.B=A+B

A: The given Boolean identity can be verified by using the postulates and theorems of Boolean algebra.

Q: Part A) Provide a real-life example where a control system becomes unstable and state its cause.…

Q: In a 100 volt circuit with a resistance of 25 ohms, the current flowing through the circuit is which…

A: Given data, Voltage V = 100 V Resistance R=25 Ω

Q: What is the mass of an assembly of 1000 protons?

A: In this case, the mass of an assembly of 1000 protons is to be determined.

Q: STA H⋅W. 1- Write the mesh equations, the find the current through R3 for the network R₁33-2 E₁ 15V…

Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

Two wattmeter method is applied to a
balanced 3 phase load. Two wattmeter
indicate 84.5 KW and 64.7 KW respectively.
What is the power factor of the balanced 3
phase load?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three-phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT
The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three- phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT RO- SO TO IR Is IT U₁-380 V CARGA 1 P₁ =950 W cos p1=0,5 ind. CARGA 2 P₂=1.140 W cos p₂=1 CARGA 3 P3=760 W cos p3=0,5 cap.
Three-Phase Power Calculations
A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the positive terminal of the source. Determine the real and reactive power and state whether the source is delivering or absorbing each.
A star connected three phase alternator supplies power to a delta connected resistive load. The alternator has a line voltage of 480V. Each resistor of delta load has 8 ohm of resistance. Find the following values. Line voltage of the load (VL(load)) Phase voltage of the load (VP(load)) Phase current of the load (IP(load)) Line current delivered by the alternator (IL(alt)) Phase current of the alternator (IP(Alt)) Phase voltage of the alternator (VP(Alt)) True power
5. The figure below shows two star connected loads with three phase power. The voltage source is 120Z0°. The loads are Z₁ = 10 + j4 № and Z₂ = 2 +j3 №. The cables are negligible. Calculate: a) the line and phase current. b) the real power from the source. c) the reactive power of the circuit. Is V N Z₁ Z₁ Z₁ Z₂ Z₂ N N Z₂
What is the total real power and total reactive power consumed by the three-phase load (regardless if wye or delta)?
In the circuit in the figure; L1 load draws 15 kVA with lagging power factor 0.6. The L2 load draws 6 kVA with a leading power factor of 0.8. According to this; What is the value of the complex power for the L2 load?
Three single phase loads are connected to the 400 V, three phase lines, 60 Hz. Load 1 operating at 3 kVA, 0.8 power factor lagging and is connected at line "a" and "b", Load 2 is a 5 kW heater and is connected at line "b" and "c", Load 3 is 4.5 kW machine that operates at a power factor of 0.6 lagging and is connected at lines "c" and "a". a. What are the line currents Ia, Ib, and Ic in Amperes (in Polar form) b. What is the total power factor.
Three single phase loads are connected to the 400 V, three phase lines, 60 Hz. Load 1 operating at 3 kVA, 0.8 power factor lagging and is connected at line "a" and "b", Load 2 is a 5 kW heater and is connected at line "b" and "c", Load 3 is 4.5 kW machine that operates at a power factor of 0.6 lagging and is connected at lines "c" and "a". a. What are the line currents Ia, Ib, and Ic in Amperes (in Polar form) b. What is the total real power in W. c. Total Reactive Power. d. Total Apparent Power. e. What is the total power factor.
a) why is there a wattmeter reading when the load is purely inductiveb) why is there no wattmeter reading when the load is purely capacitive
Calculate the value of capacitance in the following figure that must be connected in parallel with the load to correct the source power factor to 0.94 lagging. The frequency f = 60 Hz