Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN: 9781305632134
Author: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 2.27P
An industrial load consisting of a bank of induction motors consumes 50 kW at a power factor of 0.8 lagging from a
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A load consisting of induction motors is drawing 40 kW average real power from a 110-V (RMS), 6
Hz power line at a power factor of 0.7. We need to improve the p.f. to 0.9.
a) Are we going to add a capacitor or an inductor to correct the power factor?
b) How large is the capacitor or inductor?
Add a capacitor in series with load and C= 247UF
Add a capacitor in parallel with the load and C= 4699uF
O Add an inductor in series with load and L- 30uH
O Add an inductor in series with the load andL= 0.9H
A 400V, 50Hz star connected induction motor take a line current of 50amps at a p.f. of 0.8lagging . Three mesh connected capacitor are connected to raise thr p.f. 0.9. Find the value of each capacitor in microfarads.
A 230 V, 50 Hz a.c. supply is applied to a coil of 0.06 H inductance and 2.5 resistance connected in series with a 6.8 F capacitor. Calculate
impedance and power consumption and power factor.
Now ,In above a.c. circuit, A inductor of 0.2H is connected in parallel with the power supply, find new power factor and power consumption.
Chapter 2 Solutions
Power System Analysis and Design (MindTap Course List)
Ch. 2 - The rms value of v(t)=Vmaxcos(t+) is given by a....Ch. 2 - If the rms phasor of a voltage is given by V=12060...Ch. 2 - If a phasor representation of a current is given...Ch. 2 - Prob. 2.4MCQCh. 2 - Prob. 2.5MCQCh. 2 - Prob. 2.6MCQCh. 2 - Prob. 2.7MCQCh. 2 - Prob. 2.8MCQCh. 2 - Prob. 2.9MCQCh. 2 - The average value of a double-frequency sinusoid,...
Ch. 2 - The power factor for an inductive circuit (R-L...Ch. 2 - The power factor for a capacitive circuit (R-C...Ch. 2 - Prob. 2.13MCQCh. 2 - The instantaneous power absorbed by the load in a...Ch. 2 - Prob. 2.15MCQCh. 2 - With generator conyention, where the current...Ch. 2 - Consider the load convention that is used for the...Ch. 2 - Prob. 2.18MCQCh. 2 - The admittance of the impedance j12 is given by...Ch. 2 - Consider Figure 2.9 of the text, Let the nodal...Ch. 2 - The three-phase source line-to-neutral voltages...Ch. 2 - In a balanced three-phase Y-connected system with...Ch. 2 - In a balanced system, the phasor sum of the...Ch. 2 - Consider a three-phase Y-connected source feeding...Ch. 2 - For a balanced- load supplied by a balanced...Ch. 2 - A balanced -load can be converted to an...Ch. 2 - When working with balanced three-phase circuits,...Ch. 2 - The total instantaneous power delivered by a...Ch. 2 - The total instantaneous power absorbed by a...Ch. 2 - Under balanced operating conditions, consider the...Ch. 2 - One advantage of balanced three-phase systems over...Ch. 2 - While the instantaneous electric power delivered...Ch. 2 - Given the complex numbers A1=630 and A2=4+j5, (a)...Ch. 2 - Convert the following instantaneous currents to...Ch. 2 - The instantaneous voltage across a circuit element...Ch. 2 - For the single-phase circuit shown in Figure...Ch. 2 - A 60Hz, single-phase source with V=27730 volts is...Ch. 2 - (a) Transform v(t)=75cos(377t15) to phasor form....Ch. 2 - Let a 100V sinusoidal source be connected to a...Ch. 2 - Consider the circuit shown in Figure 2.23 in time...Ch. 2 - For the circuit shown in Figure 2.24, compute the...Ch. 2 - For the circuit element of Problem 2.3, calculate...Ch. 2 - Prob. 2.11PCh. 2 - The voltage v(t)=359.3cos(t)volts is applied to a...Ch. 2 - Prob. 2.13PCh. 2 - A single-phase source is applied to a...Ch. 2 - Let a voltage source v(t)=4cos(t+60) be connected...Ch. 2 - A single-phase, 120V(rms),60Hz source supplies...Ch. 2 - Consider a load impedance of Z=jwL connected to a...Ch. 2 - Let a series RLC network be connected to a source...Ch. 2 - Consider a single-phase load with an applied...Ch. 2 - A circuit consists of two impedances, Z1=2030 and...Ch. 2 - An industrial plant consisting primarily of...Ch. 2 - The real power delivered by a source to two...Ch. 2 - A single-phase source has a terminal voltage...Ch. 2 - A source supplies power to the following three...Ch. 2 - Consider the series RLC circuit of Problem 2.7 and...Ch. 2 - A small manufacturing plant is located 2 km down a...Ch. 2 - An industrial load consisting of a bank of...Ch. 2 - Three loads are connected in parallel across a...Ch. 2 - Prob. 2.29PCh. 2 - Figure 2.26 shows three loads connected in...Ch. 2 - Consider two interconnected voltage sources...Ch. 2 - Prob. 2.35PCh. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - A balanced three-phase 240-V source supplies a...Ch. 2 - Prob. 2.41PCh. 2 - A balanced -connected impedance load with (12+j9)...Ch. 2 - A three-phase line, which has an impedance of...Ch. 2 - Two balanced three-phase loads that are connected...Ch. 2 - Two balanced Y-connected loads, one drawing 10 kW...Ch. 2 - Three identical impedances Z=3030 are connected in...Ch. 2 - Two three-phase generators supply a three-phase...Ch. 2 - Prob. 2.48PCh. 2 - Figure 2.33 gives the general -Y transformation....Ch. 2 - Consider the balanced three-phase system shown in...Ch. 2 - A three-phase line with an impedance of...Ch. 2 - A balanced three-phase load is connected to a...Ch. 2 - What is a microgrid?Ch. 2 - What are the benefits of microgrids?Ch. 2 - Prob. CCSQCh. 2 - Prob. DCSQ
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 rms value of v(t)=Vmaxcos(t+) is given by a. Vmax b. Vmax/2 c. 2Vmax d. 2Vmaxarrow_forwardA 120-V rms 60-Hz source supplies two loads connected in parallel, as shown in the figure. a) Find the power factor of the parallel combination. b) Calculate the value of the capacitance connected in parallel that will raise the power factor to unity.arrow_forwardDraw the sinusoidal waveform of the AC voltage and current for the given loads below. Describe the characteristics of the waveform for each load. A. Pure resistor B. Pure inductor C. Pure capacitorarrow_forward
- Kindly answer in a detailed solution please. Thank you so mucharrow_forwardA single-phase motor draws 220 W at a power factor of 0.8 lagging when connected across a 240 V rms, 60-Hz source. A capacitor is connected in parallel with the load to produce a unity power factor. Determine the required capacitance.arrow_forwardDetermine the capacitor required to be connected in parallel with the motor so that the power factor is corrected to unity.arrow_forward
- A 120 V, 60 Hz power source is connected across an 800 ohm resistance in series with an unknown capacitor. The voltage drop across the resistor is 102 V. Find the, a.) current of the circuit b.) impedance of the circuit c.) Capacitive reactance d.) capacitance value.arrow_forwardThe single phase AC sinusoidal voltage then the rms value of the voltage v is .........arrow_forwardthe parallel connection of a resistor and a capacitor takes 0.6 A rms from a 120 V rms voltage source. Given the 0.7 leading power factor, find the resistance and capacitance at 400Hz.arrow_forward
- A chopper circuit has an inductive load of 2ohm resistance and 10mH inductance. If the source voltage is 20 V and the frequency of the chopper is set to 100Hz and the on-time to 5 ms. Determine the average voltage and current, maximum and minimum load currents.arrow_forwardAn AC voltage of 230 v is applied to a circuit consisting of a resistance of 10 ohms in series with an inductive reactance of 7 ohms. Find the power, reactive power and the power factor of the circuit. If a capacitor is connected in parallel with the RL series circuit of the preceding problem and if this capacitor supplies 1000 var, find the true power and the reactive power supplied by the 230 v source and find the resultant power factor.arrow_forwardAn ac motor with impedance Z, (4.0 A40) O is supplied by an RMS value of 220-V, 60-Hz source. You did Determine the capacitor required to be connected in paralloi with the motor so that the power factor is corrected to unity. The required value of the capacitor is 300 F.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...
Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning
Single Phase Induction Motor, How it works ?; Author: Lesics;https://www.youtube.com/watch?v=awrUxv7B-a8;License: Standard Youtube License