62. Alternating Current Alternating current is produced when an armature rotates about its axis in a magnetic field, as shown in the figure. Generators A and B rotate counterclock- wise at 60 Hz (cycles per second) and each generator pro- duces a maximum of 50 V. The voltage for each generator is modeled by E = 50 sin(12071) Eg = 50 sin 120nt - 4 (a) Find the voltage phase for each generator, and find the phase difference. (b) Are the generators producing voltage in phase? Through what angle should the armature in the second generator be rotated counterclockwise in order that the two genera- tors produce voltage in phase? - Magnets – N S Wire.

62. Alternating Current Alternating current is produced when an armature rotates about its axis in a magnetic field, as shown in the figure. Generators A and B rotate counterclock- wise at 60 Hz (cycles per second) and each generator pro- duces a maximum of 50 V. The voltage for each generator is modeled by E = 50 sin(12071) Eg = 50 sin 120nt - 4 (a) Find the voltage phase for each generator, and find the phase difference. (b) Are the generators producing voltage in phase? Through what angle should the armature in the second generator be rotated counterclockwise in order that the two genera- tors produce voltage in phase? - Magnets – N S Wire.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 14PE: Integrated Concepts A lightning bolt produces a rapidly varying magnetic field. It the belt strikes...

See similar textbooks

Similar questions

What current is needed in the solenoid described in Exercise 22.58 to produce a magnetic field 104 times the Earth’s magnetic field of 5.00105T ?
A strong electromagnet produces a uniform magnetic field of 1.60 T over a cross-sectional area of 0.200 m2. A coil having 200 turns and a total resistance of 20.0 is placed around the electromagnet. The current in the electromagnet is then smoothly reduced until it reaches zero in 20.0 ms. What is the current induced in the coil?
Why would a magnetohydrodynamic drive work better in ocean water than in fresh water? Also, why would superconducting magnets be desirable?
A mass spectrometer is being used to separate common oxygen16 from the much rarer oxygen18, taken from a sample of old glacial ice. (The relative abundance of these oxygen isotopes is related to climatic temperature at the time the ice was deposited.) The ratio of the masses of these two ions is 16 to 18, the mass of oxygen-16 is 2.661026kg, and they are singly charged and travel at 5.00106m/s in a 1.20T magnetic field. What is the separation between their paths when they hit a target after traversing a semicircle?
What is the direction of the magnetic field that produces the magnetic force shown on the currents in each of the three cases in Figure 22.55, assuming B is perpendicular to I?
If one of the loops in Figure 22.49 is titled slightly relative to the other and then currents are in the same direction, what are the directions of the torques they exert on each other? Does this imply that the poles of the bar magnet—like fields they create will line up with each other if the loops are allowed to rotate?
Integrated Concepts A lightning bolt produces a rapidly varying magnetic field. It the belt strikes the earth vertically and acts like a current in a long straight wire, it will induce a voltage in a loop aligned like that in Figure 23.57 (b). What voltage is induced in a 1.00 m diameter loop 50.0 m from a 2.00106A lightning strike, if the current falls to zero in 25.0s ? (b) Discuss circumstances under which such a voltage would produce noticeable consequences.
A long solenoid that has 1 000 turns uniformly distributed over a length of 0.400 m produces a magnetic field of magnitude 1.00 104 T at its center. What current is required in the windings for that to occur?
Make a drawing and use RHR—2 to find the direction of the magnetic field of a current loop in a motor (such as in Figure 22.34). Then show that the direction of the torque on the loop is the same as produced by like poles repelling and unlike poles attracting.
The 12.0 cm long rod in Figure 23.11 moves at 4.00 m/s. What is the strength of the magnetic field if a 95.0 V emf is induced?
Find the magnitude and direction of the magnetic field at the point equidistant from the wires in Figure 22.58(b), using the rules of vector addition to sum the contributions from each wire.
Indicate whether the magnetic field created in each of the three situations shown in Figure 22.59 is into or out of the page on the left and right of the current.