Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 17, Problem 1PA
An AC electric motor is connected to a 240-V, 60-Hz source. A clamp-on ammeter with a peak hold function reveals that the motor has an inrush current of 34 A when the motor is first started. Your job is to reduce the inrush current to a value of 20 A by connecting a resistor in series with the motor. The resistor will be shunted out of the circuit after the motor is started. Using an ohmmeter, you find that the motor has a wire resistance of 3
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
1. For v(t)=2Σn-[8(t-n) + 28(t-n-0.4)], determine
(a) (10%) a figure of v(t);
(b) (5%) period To;
(c) (10%) Fourier series in Form III;
(d) (5%) Fourier transform;
(e) (5%) total power.
5. In the figure, v(t) = m(t)ej2nfct where the message signal is m(t): = Acos (2πfmt) and the carrier signal is
vc(t) = 2e−j(2nfct+0) where 0 is constant and 0 < fm
= cos (2π x 10t+ 0) where 0 is random with a probability density
E [0, 2π), and f(0) = 0 otherwise. v,(t) passes through a linear filter below.
2. Consider a random process v(t)
function f(0) = 1/(2) for
vi(t)-
H(f)
vo(t)
Determine
(a) (5%) vo(t);
(b) (10%) autocorrelation function of v(t);
(c) (8%) power spectral density function of vo(t);
(d) (7%) power of vo(t).
1
=
H(f)
2πf2+1
Chapter 17 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 17 - 1. What is the relationship of voltage and current...Ch. 17 - What is the relationship of voltage and current...Ch. 17 - 3. What is power factor?
Ch. 17 - 4. A circuit contains a 20- resistor and an...Ch. 17 - 5. An R-L series circuit has a power factor of...Ch. 17 - 6. An R-L series circuit has an apparent power of...Ch. 17 - 7. The resistor in an R-L series circuit has a...Ch. 17 - 8. An R-L series circuit has a reactive power of...Ch. 17 - 9. An R-L series circuit contains a resistor and...Ch. 17 - 10. What is the voltage drop across the resistor...
Ch. 17 - 11. A phase angle meter connected in an R-L series...Ch. 17 - 12. An R-L series circuit has a power factor of...Ch. 17 - An AC electric motor is connected to a 240-V,...Ch. 17 - You are a journeyman electrician working in an...Ch. 17 - Assume that the circuit shown in Figure 17-2 is...Ch. 17 - Assume that the voltage drop across the resistor,...Ch. 17 - Assume the circuit shown in Figure 17-2 has an...Ch. 17 - Assume the circuit shown in Figure 17-2 has a...Ch. 17 - In an R-L series circuit,...Ch. 17 - In an R-L series circuit,...Ch. 17 - In an R-L series circuit,...Ch. 17 - In an R-L series circuit, the apparent power is...Ch. 17 - 9. An R-L series circuit is connected to a 60-Hz,...Ch. 17 - In an R-L series circuit, Z=88,R=32.FindXL.Ch. 17 - In an R-L series circuit, apparent power = 450 VA,...Ch. 17 - In an R-L series circuit, =22, true power = 94...Ch. 17 - An R-L series circuit contains two resistors and...Ch. 17 - An R-L series circuit contains two resistors and...Ch. 17 - An R-L series circuit contains two resistors and...Ch. 17 - An R-L series circuit contains two resistors and...
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
- 4. Consider v(t) = 2 cos(t) + 5 sin(2t) passes through a linear system with frequence response H(f). 3 vi(t) Determine (a) (10%) vo(t); (b) (5%) power of vo(t). H(f) → vo(t) H(f)= 3, Ifls- 4π (0, otherwise.arrow_forward3. For the AM demodulator in figure, v(t) = m(t)cos (2πfet + 4) with a constant where the message signal is m(t) v(t)- =Acos (2πfmt) and carrier signal is v(t) = cos (2πfet) with fmarrow_forwardNot use ai pleasearrow_forward14arrow_forward5. In the figure, v(t) = m(t)ej2nfct where the message signal is m(t): = Acos (2πfmt) and the carrier signal is vc(t) = 2e−j(2nfct+0) where 0 is constant and 0 < fmarrow_forwardFor the following parallel resonant bandpass filter, find the exact center frequency of the pass band and the bandwidth. Given: • Vin = 20 V • L = 7.5 μH C = 270 pF - Rw = 5.1 Q R₁ = 750 0 Center Frequency: f= kHz Bandwidth: BW= kHz Maximum Output Voltage: Vout(max)= V Minimum Output Voltage: Vout(min) = V 270 pF HH C ww L Rw 5.1Q 7.5 HH Vin 20 V RLoad 750 Ω Voutarrow_forward3. For v(t) = 4Σn=-8(t-n- 0.5), (a) (10%) draw a figure of v(t); (b) (5%) determine period To; (c) (10%) determine Fourier transform form III; (d) (5%) determine power spectral density.arrow_forward1. For v(t) = 2 cos(2π x 20t) + 3 sin (2π x 10t), determine (a) (5%) period To; →→T= (b) (8%) Fourier transform form II; (c) (5%) power of the fundamental frequency component; (d) (2%) total power. s [ue] dtarrow_forwardDesign, simulate and implement an electropneumatic automation system with PLC for 2 cylinders (A and B), which when pressing the push button S1 performs the following pneumatic sequence: A- B- B+ A+ for 10 seconds. With the push button S2 the sequence can be stopped at any time.arrow_forward4. Consider v(t) = 2 cos(t) + 5 sin(2t) passes through a linear system with frequence response H(f). 3 vi(t) Determine (a) (10%) vo(t); (b) (5%) power of vo(t). H(f) → vo(t) H(f)= 3, Ifls- 4π (0, otherwise.arrow_forward2. (10%) In a 6G wireless communication system, the antenna length is L = 0.5 cm. Determine the carrier frequency fc according to the antenna length.arrow_forwardHANDWRITTEN SOLUTION REUIRED NOT USING CHATGPTarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_iosRecommended textbooks for you
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage LearningDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Electrical Measuring Instruments - Testing Equipment Electrical - Types of Electrical Meters; Author: Learning Engineering;https://www.youtube.com/watch?v=gkeJzRrwe5k;License: Standard YouTube License, CC-BY
01 - Instantaneous Power in AC Circuit Analysis (Electrical Engineering); Author: Math and Science;https://www.youtube.com/watch?v=If25y4Nhvw4;License: Standard YouTube License, CC-BY