A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates from a 130 V DC power line. The resistance of the field windings, R, is 208 n. The resistance of the rotor, R. is 4.90 n. When the motor is running, the rotor develops an emf E. The motor draws a current of 4.46 A from the line. Friction losses amount to 45.0 W Part A Compute the field current Ir. Express your answer in amperes. • View Available Hint(s) Temglates Symbols undo redo Tesel keyboard shortcuts Help A I = 0.56 Submit Prevlous Answere X Incorrect, Try Again; 4 attempts remaining Part B Compute the rotor current I > View Available Hint(s) Figure 1 of 1 Templates Symbols undo redo Teset keyboard shortcuts Help A I = 4,26 Submit Prevlous Answers R E R. X Incorrect; Try Again; 5 attempts remaining Part C Compute the emf E.

A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates from a 130 V DC power line. The resistance of the field windings, R, is 208 n. The resistance of the rotor, R. is 4.90 n. When the motor is running, the rotor develops an emf E. The motor draws a current of 4.46 A from the line. Friction losses amount to 45.0 W Part A Compute the field current Ir. Express your answer in amperes. • View Available Hint(s) Temglates Symbols undo redo Tesel keyboard shortcuts Help A I = 0.56 Submit Prevlous Answere X Incorrect, Try Again; 4 attempts remaining Part B Compute the rotor current I > View Available Hint(s) Figure 1 of 1 Templates Symbols undo redo Teset keyboard shortcuts Help A I = 4,26 Submit Prevlous Answers R E R. X Incorrect; Try Again; 5 attempts remaining Part C Compute the emf E.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A plug-in transformer, like that in the figure below, supplies 9.00 V to a video game system. How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 420 turns? What is its input current when its output is 1.45 A?
The charger for your electronic devices is a transformer. Suppose a 60 Hz outlet voltage of 120 V needs to be reduced to a device voltage of 3.0 V. The side of the transformer attached to the electronic device has 45 turns of wire. Part A How many turns are on the side that plugs into the outlet? N = ΠΠ ΑΣΦ Submit Request Answer ? turns
Two long, parallel wires are separated by a distance of 3.40 cm. The force per unit length that each wire exerts on the other is 4.60x10-5 N/m, and the wires repel each other. The current in one wire is 0.640 A. Part A What is the current in the second wire? Express your answer in amperes. I = for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Submit Part B Request Answer Are the two currents in the same direction or in opposite directions? In the same direction In opposite direction Submit Previous Answers ✓ Correct A
Q The following figures give the O.c.C. of d.c. Shunt generator driven at a constant speed of 700 r.p.m. 40 Terminal voltage (V): 120 10 20 80 160 200 240 260 Field Current (A) : 0.1 0.24 0.5 1.92 1.2 Determine the critical resistance at (a) 700 r.p.m. (b) 850 r.p.m. If resistance of field coils is 50 2, find the range of the field rheostat required to vary the voltage between the limits of 180 V and 250 V on open circuit at a speed of 700 r.p.m. 0.77 3.43 5.2
. A clamp-on ammeter is placed around a conductor and the meter indicates that there is 10A of current flowing through the conductor. If the wire were wrapped into 10 loops and the clamp-on ammeter were clamped around the 10 loops, what value of current would the clamp-on ammeter indicate? A. 10A B. 1A C. 0A D. 100A I NEED TYPED ANS NOT HANDWRITTEN ANS IN DETAIL
- Part A How much energy is stored in a 2.60-cm-diameter, 14.0-cm-long solenoid that has 190 turns of wire and carries a current of 0.790 A? Express your answer with the appropriate units. UL = 2.82 Submit μA J Previous Answers Request Answer ? X Incorrect; Try Again; One attempt remaining
A 5.50 nF capacitor is charged to 12.0 V, then disconnected from the power supply and connected in series through a coil. The period of oscillation of the circuit is then measured to be 8.60 x 10-5 s. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of An oscillating circuit. Part C Calculate the total energy of the circuit. Express your answer with the appropriate units. ΜΑ 7 0 ? U = Value Units Submit Request Answer Part D Calculate the maximum current in the circuit. Express your answer with the appropriate units. D ΜΑ 7 0 ? Imax = Value Units Submit Request Answer
A 20-hp, three phase squirrel cage induction motor has a nema code e. The motor is connected to 208 volts. What is the starting current for the motor.
A motor has calls with a resistance of 25 ohm and operates from a voltage of 238 V. When the motor is operating at its maximum speed, the back emf is 149 V. Find the current in the calls when the motor is first turned on. A Find the current in the calls when the motor has reached maximum speed.
Two long, parallel wires are separated by a distance of 2.70 cm. The force per unit length that each wire exerts on the other is 3.70x10-5 N/m, and the wires repel each other. The current in one wire is 0.680 A. Part A What is the current in the second wire? Express your answer in amperes. ΑΦ ? I = A Submit Request Answer Part B Are the two currents in the same direction or in opposite directions? In the same direction In opposite direction Submit Request Answer
Part A How much energy is stored in a 2.60-cm-diameter, 14.0-cm-long solenoid that has 190 turns of wire and carries a current of 0.790 A? Express your answer with the appropriate units. UL = Submit μA Value Request Answer Ć Units ?
Which of the following is false? Batteries produce direct current alone. O The current reaching our homes is called AC. O Majority of our home appliances work on a 110-V line. AC is called alternating current because it changes directions many times each second. In an electrical circuit, electrons come from a dry cell, wet cell or battery the power station generator O the electrical conductor itself O the back emf of motors