The power factor of an AC circuit can be found using the formula, Power factor =O a. watts/volt-amperesO b. wattful power/ volt-amperesO c. volt-amperes/wattsO d. both a & b On which theory, nature of light depends upon.O a. Wave theoryO b. Particle theoryO c. Both a and bO d. Visible spectrum theory

Power factor = watt (or) wattfull/ volt amperes Both a & b option d

Answered: The power factor of an AC circuit can…

The power factor of an AC circuit can be found using the formula, Power factor = O a. watts/volt-amperes O b. wattful power/ volt-amperes O c. volt-amperes/watts O d. both a & b

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter17: Resistive-inductive Series Circuits

Section: Chapter Questions

Problem 3RQ: 3. What is power factor?

See similar textbooks

Related questions

Q: Define Power Factor in five ways with respect to each of the following: >angle between the voltage…

A: The cosine of angle between voltage (V) & current (I) is termed as power factor.

Q: Q3) a) What is the reading of each wattmeter if ZA = 10 430°, ZB = 30 20°, Zc = 20 L- 30° b) Show…

A: What is reading of the wattmeters Two wattmeter method used to measure to power across the load. In…

Q: In an Industry, three phase power measurement is carried out, using two wattmeter method, each…

A: 3 phase power measurements Two Wattmeter is used to measure. If each Wattmeter reading = 10kW for…

Q: Name three methods that can be used to improve the power factor of a plant

A: Need of Power factor improvement: Low power factor increases the losses in the line due to high…

Q: 1. An impedance draws a current I = 10cos(wt - 30°) A from a v = 220sin wt volts. What is the power?…

Q: Calculate the line current and power factor in this AC power system: Ammeter (A) 240 VAC Z = 522 34"…

Q: Two wattmeters used to measure the power input in a 3.phase circuit indicate 1000 W and 500 W…

Q: What are Principle , features and applications of wattmeter.

A: As per Bartleby guidelines we are allowed to solve only one question, since these parts are…

Q: What would be the phase difference between voltage and current at an impedance of 3 + j4 ohms

A: Phase difference between voltage and current impedance of 3 + j4 ohms?

Q: Be able to calculate all forms of ac power in ac circuits with linear transformers and ideal…

Q: Figure 2 shows an AC circuit consists of 2 loads. The information of the loads are given in Table 1.…

A: The circuit can be redrawn as: For Z2 Step 1: Calculate current through loop 2…

Q: A single phase line is transmitting 1100 kW to a load at 11 kv and 0.9 power factor lagging. Line…

A: Given values are - PL=1100kWVL=11kVcosϕ=0.9RL=2ohm

Q: Why do we need 220 V at 60 Hz in outlets? Why don’t we use DC in our transmission lines instead?

A: Transmission lines- Transmission lines are used to transfer electrical power from one place to…

Q: Power factor is the ratio of True or Real power to

Q: Refer to the above diagram Assume voltages and currents in both three-phase AC networks are…

A: First we will draw phasor diagram representing the various phasors in the system. Power P = voltage*…

Q: In an Industry, three phase power measurement is carried out, using two wattmeter method, each…

Q: - The voltage drops across two components when connected in series across an AC supply are vi (t) =…

A: The circuit this is excited the use of alternating supply is referred to as an AC Circuit. The…

Q: a. Find the total number of watts, volt-amperes reactive, and volt-amperes, and the power factor F.…

Q: Define the parts and functions of AC Generator - Define the working principle of AC Generator. -…

A: AC Generator A machine that converts mechanical energy to electrical energy is called AC generator.…

Q: 1) Principle and features of different methods for measuring three-phase power. 2) Discuss the…

Q: 3. A Three-phase 440 volt motor operates with a powerfactor of 0.4.Two Wattmeters are connected to…

Q: For the circuit shown. Take Van 120<0 Vrms, then the reading of the second wattmeter W2 %3D is.W. *

Q: Problem 1 Find the complex power delivered by the voltage source and the power factor seen by the…

Q: 2. A series AC circuit consisting of R = 750 N and C = 3 µF are connected across a voltage source V…

Q: Q1(a) Analyse the concept Skin Effect in AC and DC supply of power using Transmission lines and…

Q: A three phase 60 Hz transmission line delivers 750 KW at 95% leading power factor and at delta…

Q: 3. The equation P = E²/Z can be used to determine the power delivered to an AC circuit. Is this…

A: The objective is to determine if the statement is true or false.

Q: nage =xpressed as: == 15 sin ( 314t + 150° ) Volts = 5 sin ( 314t + 120° ) Amperes Determine the: a.…

Q: Given the following AC circuit, calculate the real, reactive, apparent, and complex power absorbed…

A: we need to determine active power, reactive power and complex or apparent power.

Q: Figure below shows a simple single-phase AC power system with three loads. The voltage source is V =…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Q4) branch. a) Find the average power, apparent power, reactive power, and power factor for each b)…

A: Ans (a) Average power in RC circuit = 12V×I1 Cosθ ------ 1) Current through RC circuit I1 = VZ =…

Q: (d) The impedance in ohm of each coil. (Polar form) (e) The value of the resistance in ohm of each…

Q: A small industry takes a steady load of 350 kW at a lagging power factor of 0·707 for 3000 hours a…

Q: A source of AC emf E₁ = 120/30º volts with an impedance of Z₁ = 2/0° ohms is connected in parallel…

A: In this question we will find load current for parallel connected AC source....

Q: A source of AC emf E₁ = 100/0º volts with an impedance of Z₁ = 20/0° ohms is connected in parallel…

A: In this question we will find current through load impedance for two parallel connected source....

Q: why need to improve a power factor (in electrical)

A: Given : In the above question they want to know the how the power factor can be improved in an…

Q: A impedance of Z = 15z 35° ohms is connected across a source with a voltage of 207.846 sin (157.08t)…

A: We need to find out time period .

Q: Let voltage across a load be v(t) = 20 + 40 cos(100t) volt and current through the load by i(t) =…

Q: Figure below shows a simple single-phase AC power system with three loads. The voltage source is V =…

A: Kirchoff's voltage law is an important method to solve big and complex circuits. According to KCL,…

Q: Two wattmeters used to measure the power input in a 3-phase circuit indicate 1000 W and 500 W…

A: The solution is given below

Q: The line voltage of a wye connected 2400V 600 KVA unity power factor AC generator is reconnected for…

A: For Star connection, line voltage =3×phase voltage Line current = phase current. For Delta…

Q: Three Inductive loads each of resistance R = 32 ohms and inductance L = 0.03 H are connected in star…

Q: Complex Power The circuit in Figure 4 shows a voltage source with an AC signal of Vo = 40 + j0 V (a)…

Q: The load of 860 kVA with 0.69 power factor lagging, then the kW rating of the load is

Q: Q21 In an Industry, three phase power measurement is carried out, using two wattmeter method, each…

Q: The power factor of an AC circuit can be found using the formula, Power factor %3D O a.…

A: power factor is the angle between voltage and current. from power triangle we will find power…

Q: When applying Ohm's low in AC circuits, the voltage (V) across an impedance (Z) is related to the…

Q: AC resistance of conductors used in electrical machines which is operating with AC power supply is…

A: In the question, the given Statment "AC resistance of conductors used in electrical machines…

Q: Consider the three phase load represented in the figure, where the line current/ is known. Calculate…

A: As per our company guidelines we are supposed to answer only First question kindly repost other…

Concept explainers

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

Question

The power factor of an AC circuit can be found using the formula, Power factor =
O a. watts/volt-amperes
O b. wattful power/ volt-amperes
O c. volt-amperes/watts
O d. both a & b

On which theory, nature of light depends upon.
O a. Wave theory
O b. Particle theory
O c. Both a and b
O d. Visible spectrum theory

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 by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Analysis of Single Phase and Three Phase System

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

Define Power Factor in five ways with respect to each of the following: >angle between the voltage and the current >from impedance triangle >from power triangle >from voltage triangle >from current triangle
Discuss the differences between the current coil and voltage coil of a wattmeter from a design point of view.What will be the consequences if the current coil and voltage coil of a wattmeter are interchanged by mistake?What are the possible errors in this measurement?Can you measure power in an ac circuit by using an ammeter and voltmeter? If No, why? If yes, how?What is to be done if the wattmeter reads in the negative direction?
Asap
Which of the following statements correctly describe the representation of power in an AC system using a power triangle? Select one: A. Capacitive reactive power is represented vertically upward on the power triangle. B. Inductive reactive power is represented horizontally on the power triangle. C. The apparent power (Pa) is not represented on the power triangle. D. Working power (P) is represented vertically upward on the power triangle
60. An RLC series circuit connected to a 110-volt and 50-cycle AC source, contains the following series resistances and reactances: R1=10 ohm, R2= 15, XL1=20 ohms, XL2=25 ohms, XC= 40 ohms. Find the real power. a. 65.3899 b. 392.4372 c. 397.848 d. 588.6559
Objective 3 ) -Be able to calculate all forms of ac power in ac circuits with linear transformers and ideal transformers
The expression P=U.I.cosp defines Select one: 1. DC power 2. AC Power in Single Phase System 3. AC Power in Three Phase System
The power dissipated in Watts by a load as a function of its resistance in Ohms is shown in the graph in Figure below. Determine: a) The source resistance: b) The source voltage:
The power factor of an AC circuit can be found using the formula, Power factor = O a. watts/volt-amperes O b. wattful power/ volt-amperes O c. volt-amperes/watts O d. both a & b
plase answer five a quesion option corrctly 9.In AC circuits, power consumed is A.it depends on the supply voltage B.product of voltage and current C.it depends on the power factor (p.f.) of the circuit in addition to voltage and current D.it depends on the magnitude of the circuit current 10A potential transformer is a A.transformer used with an AC ammeter B.transformer used with an AC voltmeter C.transformer used with a DC voltmeter D.transformer used with a DC ammeter 11. Define Per Unit Quantity A/ Xp.u = x base / x actual per unit B/ Xp.u = X actual / x base per unit C/ Xp.u = x actual / x unit per unit 12./ VS= 1200<0º V ZL= 50 + j60 ohm ZS= j25ohm By taking Zbase = 100 ohm, find Vs (p.u), Zs(p.u), ZL(p.u) A. Vs (p.u) = 1 < 00 p.u Zs(p.u) = j0.20 p.u ZL(p.u) = 66.42<390 p.u B. Vs (p.u) = 1 < 00 p.u Zs(p.u) = j0.25 p.u ZL(p.u) = 42.96<730 p. C. Vs (p.u) = 1 < 00 p.u Zs(p.u) = j0.25 p.u ZL(p.u) = 0.781<50.20 p.u 13. Which of…
Calculate the maximum current in a pure resistive circuit, if AC voltage applied is 300V , 50HZ and R= 10k Ohm. Select one: a. 28.28mA b. 42.42mA c. NONE OF THESE d. 14.14mA
a. Using Ohm’s Law, compute the voltage and current for eachcomponent. Use the formula Z = Vt / It. b. Compute and record the magnitude and phase angle of the impedanceusing the equation Z= R + RL + jXL – JXC. Use 3uF for the value of C,1.006H for the value of L and for the resistance is computed based onthe specification of the lamp. c. Compute and record for the total power using the formula: Pcomputed = Scosθ d. Compute and record the reactive power and apparent power using theformula Scomputed = V2/ZQcomputed = √S2 − P2 e. Compute for the reactive power (measure) and apparent power(measured) using the formula.Q = PtanθS = P/ cos θ f. Compute the percent difference between the measure and the computedvalue of the impedance.