Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
a. A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value of the pitch factor? • 0.956 . 0.921 . 0.947 0.985

a. A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value of the pitch factor? • 0.956 . 0.921 . 0.947 0.985

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question

Solve ITEM 4 with complete GIVEN and STEP-BY-STEP SOLUTIONS. 

ITEM 2 a. A current is given by this equation | = 2t^3+ t^2 + 3, a capacitor has an initial charge of 6.83 coulomb. What should be the charge of the capacitor after 5 sec? ● b. A 0-10 ampere ammeter has an internal resistance of 0.01 ohm. What shunt resistance to the ammeter must be connected to have a reading of 0 - 100? 1.11 x 10^-3 ohm 375.8 362.4 ● x 10^-3 ohm C. ITEM 3 1. A 220 volts series motor when running at 800-RPM draws a current of 100 amperes. The combined resistance of the armature and series field is 0.1-0. What is the speed when the motor develops ½ of the original torque? 1600 RPM 1225 RPM ● • ● ● . 2. A 3-phase 150 hp, 60 Hz, 460 volts, 6 pole induction motor has a full load torque of 679 lb-ft. What is the full load slip? 4% 2.8% ohm • 0.111 ohm 385.7 369.1 ● . 1.566 μH, 375 μF 3.112 μH, 500 μF ● 3. A diversity factor of 2.5 gives a savings of percent in the generating equipment. . 76 26 ● 1147 RPM 1690 RPM PART 4 a. A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value of the pitch factor? . 0.956 ● 0.921 1.5% 3% b. An oscillogram can be adequately modeled by a second-order system in the form of a parallel RLC circuit. It is desired to give an underdamped voltage across a 200-ohm resistor. If the damping frequency is 4 kHz and the time constant the envelope is 0.25 s, find the necessary values of L and C. ● 40 ● 60 0.947 0.985 2.533 µH, 625 µF 2.125 µH, 467 µF Three unequal single phase induction motor are connected between lines and neutral of balanced 3 phase, 350 V circuit. The line to neutral voltage is 202 V each. The first load takes 20 kW at 0.82 pf, the second takes 28 kW at 0.75 pf and the third takes 36 kW at 0.8 pf. What is the current in the neutral conductor? 85.6 A ● 125.4 A 105.5 A . 133.4
Transcribed Image Text:ITEM 2 a. A current is given by this equation | = 2t^3+ t^2 + 3, a capacitor has an initial charge of 6.83 coulomb. What should be the charge of the capacitor after 5 sec? ● b. A 0-10 ampere ammeter has an internal resistance of 0.01 ohm. What shunt resistance to the ammeter must be connected to have a reading of 0 - 100? 1.11 x 10^-3 ohm 375.8 362.4 ● x 10^-3 ohm C. ITEM 3 1. A 220 volts series motor when running at 800-RPM draws a current of 100 amperes. The combined resistance of the armature and series field is 0.1-0. What is the speed when the motor develops ½ of the original torque? 1600 RPM 1225 RPM ● • ● ● . 2. A 3-phase 150 hp, 60 Hz, 460 volts, 6 pole induction motor has a full load torque of 679 lb-ft. What is the full load slip? 4% 2.8% ohm • 0.111 ohm 385.7 369.1 ● . 1.566 μH, 375 μF 3.112 μH, 500 μF ● 3. A diversity factor of 2.5 gives a savings of percent in the generating equipment. . 76 26 ● 1147 RPM 1690 RPM PART 4 a. A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value of the pitch factor? . 0.956 ● 0.921 1.5% 3% b. An oscillogram can be adequately modeled by a second-order system in the form of a parallel RLC circuit. It is desired to give an underdamped voltage across a 200-ohm resistor. If the damping frequency is 4 kHz and the time constant the envelope is 0.25 s, find the necessary values of L and C. ● 40 ● 60 0.947 0.985 2.533 µH, 625 µF 2.125 µH, 467 µF Three unequal single phase induction motor are connected between lines and neutral of balanced 3 phase, 350 V circuit. The line to neutral voltage is 202 V each. The first load takes 20 kW at 0.82 pf, the second takes 28 kW at 0.75 pf and the third takes 36 kW at 0.8 pf. What is the current in the neutral conductor? 85.6 A ● 125.4 A 105.5 A . 133.4
Expert Solution
steps

Step by step

Solved in 7 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Three phase Induction Motor
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS