Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7, Problem 20P
To determine
The reason that there is no induced voltage when the steel disk is not rotating.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Full scale deflecting torque of 10 A MI Ammeter is 5 x 10-5 N-m. The
rate of change of self inductance of the instrument at full scale in
"uH per radian" is
The source of the steady
magnetic field may be
3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the length of the air
gap in the core is 4 cm, and the number of turns on the coil is 100. How much current is required to produce
total flux of 0.00052 Weber? (H= 2000, Ho=4.n107).
6 cm
20 cm
N = 100
4 cm = lg
6 cm
6 cm
18 cm
12 cm
18 cm
6 ст
Depth = 3 cm
Chapter 7 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 7 - The tesla (T) and the gauss (G) are both units for...Ch. 7 - The unit for measuring magnetomotive force (mmf)...Ch. 7 - Ohm’s law for a magnetic circuit gives the...Ch. 7 - A solenoid is a form of electromagnetic switch...Ch. 7 - A hysteresis curve is a plot of flux density (B)...Ch. 7 - To produce an induced voltage in a coil, the...Ch. 7 - Prob. 7TFQCh. 7 - Prob. 8TFQCh. 7 - Prob. 9TFQCh. 7 - Prob. 10TFQ
Ch. 7 - Prob. 1STCh. 7 - Prob. 2STCh. 7 - Prob. 3STCh. 7 - Prob. 4STCh. 7 - Prob. 5STCh. 7 - Prob. 6STCh. 7 - Prob. 7STCh. 7 - The electromagnetic activation of a movable shaft...Ch. 7 - When there is current through a wire placed in a...Ch. 7 - Prob. 10STCh. 7 - Prob. 11STCh. 7 - Prob. 12STCh. 7 - Prob. 13STCh. 7 - Prob. 14STCh. 7 - Prob. 15STCh. 7 - The cross-sectional area of a magnetic field is...Ch. 7 - In a certain magnetic field the cross-sectional...Ch. 7 - Wha is the flux in a magnetic material when the...Ch. 7 - At a given location, the earth’s magnetic field...Ch. 7 - A very strong permanent magnet has a field of...Ch. 7 - Prob. 6PCh. 7 - What is the relative permeablility of a...Ch. 7 - Determine the reluctance of a material with a...Ch. 7 - What is the magnetomotive force in a 500 turn coil...Ch. 7 - Typically, when a solenoid is activated, is the...Ch. 7 - Prob. 11PCh. 7 - Explain the sequence of events in the circuit of...Ch. 7 - Prob. 13PCh. 7 - What is the magnetizing force in Problem 9 if the...Ch. 7 - How can the flux density in Figure 7-51 be changed...Ch. 7 - In Figure 7-51, determine the following if the...Ch. 7 - Determine from the hysteresis curves in Figure...Ch. 7 - According to Faraday’s law, what happens to the...Ch. 7 - The voltage induced across a certain coil is...Ch. 7 - Prob. 20PCh. 7 - A 20 cm long conductor is moving upward between...Ch. 7 - Prob. 22PCh. 7 - If a generator is 80% efficient and delivers 45 W...Ch. 7 - Prob. 24PCh. 7 - If the output voltage in Problem 24 is 14 V, what...Ch. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - A basic one-loop de generator is rotated at 60...Ch. 7 - Assume that another loop of wire. 90 from the...
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
- You have a solenoid with an into all current of 577A and a turn dentistry of 6601 loops/m What is the intial magnetic field through the solenoid ? the current in the solenoid drops to 34 A over the course of 4ms. What is the final magetic field through the solenoid ? the coil has a resistance of 20. What is the current though the coil? what is the power disssipated by the coil? inside the solenoid 56loops and a radius of 6.2cm. What is the magnitude of the induced in the 56 turn coil. Positive nunberarrow_forward4-ls the residual magnetism on the generator is necessary how can you cancel these residual magnetism in D.c generatorarrow_forwardA ferromagnetic core in the shape of a doughnut has a cross-sectional area of 0.11 m2 and an average length of 1.4 m. The permeabil ity of the core is 1.206 × 10-3 Wb/A-t. m. Determine the reluctance of the magnetic circuitarrow_forward
- The magnetic flux through each turns off a 100-turn coil is (³-2) milli-webers where t is in seconds. The induced EMF at t = 2 second is?arrow_forwardFor a ferromagnetic materials to become magnetic it's magnetic domains must be alignedarrow_forward4. Two current-carrying loops are arranged so that one of the loops just sits above the other just like in the figure below. The current in each loop is directed counterclockwise. Draw the resulting magnetic field for each loop to determine how the loops will "interact" with each other. 00arrow_forward
- Question: 01 A three-legged circular core is shown in figure below. The winding on the left leg of the core (N) has 800 turns. The depth of the core is 10 cm. If the dimensions are as shown, then determine the total reluctance of the given core when u, = 500 and constant. 15ст N=800 50ст Scm 15ст 60cm 20cmarrow_forward4-A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the length of the air gap in the core is 4 cm, and the number of turns on the coil is 100. How much current is required to produce total flux of 0.00062 Wb? (H= 3000, µo=4.107). 6 ст фз 4 cm = lg 20 cm N = 100 6 cm i ø1 6 cm 18 cm 12 cm 18 cm 6 cm Depth = 3 cmarrow_forwardAn air core toroidal coil has 120 turns, the length is 12 cm and 12 sq. cm in area What is the current required to set up a flux of 1.2x10° weber. What is the current?arrow_forward
- A 14.9 cm long solenoid contains 765 turns and carries a current of 5.07 A. What is the strength B of the magnetic field at the center of this solenoid? B- Tarrow_forwardA magnetic ring has reluctance of 1.675 × 10⁰ AT weber. The flux to be produced by the coil is 800 x 10 webers, then the AT required for the m.m.f. will bearrow_forwardFor the magnetic core of Figure, the flux density at cross section 1 is B1=0.4T. Determine B2 A₁ = 2 × 10-2 m² Ф Φ A₂ = 1 × 10-2 m²arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...
Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning