Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
ITEM 2 a. A current is given by this equation 1 = 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? 375.8 • 362.4 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 • x 10^-3 ohm 385.7 369.1 ● ohm 0.111 ohm

ITEM 2 a. A current is given by this equation 1 = 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? 375.8 • 362.4 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 • x 10^-3 ohm 385.7 369.1 ● ohm 0.111 ohm

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter34: Motor Installation
Section: Chapter Questions
Problem 6PP: A 350-HP squirrel-cage induction motor is connected to a 480-volts three-phase feeder. The nameplate...
See similar textbooks
icon
Related questions
Question

Solve ITEM 2 with complete GIVEN and STEP-BY-STEP SOLUTIONS. 

ITEM 1 a. A 220-V long shunt compound motor ha an armature resistance of 0.54-02 and a series field resistance of 0.12-Q. What is the counter EMF if the armature current is 15 amperes. • 220 volts 210 volts 205 volts . 230 volts b. Three single phase, 10 KVA transformer connected delta-delta supply a balanced 3-phase wye-connected load of 26kVA. One transformer is removed for repair. Find the KVA load of each remaining transformer. ● c. Three 150-ohm resistors are connected in wye across 480 Volts, 3-phase source. If one of the resistors is open, what is the power absorbed by the remaining resistors? 768 W 1,536 W 35 15 ● ITEM 2 a. A current is given by this equation 1 = 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? 375.8 362.4 ● x 10^-3 ohm • ● ● ● 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 ● 2.8% 25 30 · 2,304W 1,152 W 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 2 of the original torque? 1600 RPM 1225 RPM 385.7 369.1 ● 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% ohm 0.111 ohm 1147 RPM 1690 RPM 1.5% 3% 3. A diversity factor of 2.5 gives a savings of percent in the generating equipment. ● 76 26 ● 40 ● 60
Transcribed Image Text:ITEM 1 a. A 220-V long shunt compound motor ha an armature resistance of 0.54-02 and a series field resistance of 0.12-Q. What is the counter EMF if the armature current is 15 amperes. • 220 volts 210 volts 205 volts . 230 volts b. Three single phase, 10 KVA transformer connected delta-delta supply a balanced 3-phase wye-connected load of 26kVA. One transformer is removed for repair. Find the KVA load of each remaining transformer. ● c. Three 150-ohm resistors are connected in wye across 480 Volts, 3-phase source. If one of the resistors is open, what is the power absorbed by the remaining resistors? 768 W 1,536 W 35 15 ● ITEM 2 a. A current is given by this equation 1 = 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? 375.8 362.4 ● x 10^-3 ohm • ● ● ● 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 ● 2.8% 25 30 · 2,304W 1,152 W 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 2 of the original torque? 1600 RPM 1225 RPM 385.7 369.1 ● 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% ohm 0.111 ohm 1147 RPM 1690 RPM 1.5% 3% 3. A diversity factor of 2.5 gives a savings of percent in the generating equipment. ● 76 26 ● 40 ● 60
Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Inductor
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
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS