Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 7, Problem 6P
To determine
The effect on compass needle when the direction of the current through the conductor is reversed.
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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...
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- My question is the flux equation as it is does not change as the second picarrow_forwardWill Upvote for solutionarrow_forwardWhich of the following configurations can be used to apply Ampere's circuital law ? * A Only A Only A & B & C Only D All of them None of the above If the length of a solenoid is doubled but the number of turns is halved, the magnetic field inside will * cut by 1/2 cut by 1/4 Quadrable Double None of the above O O O Oarrow_forward
- The reluctance of a non-magnetic circuit is 15 units. How much flux will be set up if surrounded by a coil 560 turns carrying a current of 3.2 Ampere? Draw the diagram for the questionarrow_forwardA elearn * Question Completion Status: 7 8 9. 10 QUESTION 13 E-06, PC-05. An induced current in a coil? Does not affect the EMF producing it. Aids the EMF producing it. Opposes the EMF producing it. QUESTION 14 E-06, PC-05. The induced EMF in a coil can be increases by? By adding more number of turns. Decrease the change in flux. Increase the change in time. QUESTION 15 E-06, PC-03. An Inductor's time constant is given by? O L2 /R. L/R. LR.arrow_forwardhow much fluxarrow_forward
- 4-ls the residual magnetism on the generator is necessary how can you cancel these residual magnetism in D.c generatorarrow_forwardFind the magnetic flux established in the magnetic circuit shown in Figure 7. Error up to +5% is acceptable. The core is made of cast steel. The parameters for the core are given below: led = 7 x 10-4m lab = lbe = lef = lfa Area (throughout) = 2.5 × 10-4m² lbc = lde = 0.25m Cast steel I=2A ek Air gap N=200 ¢ turns 4 Figure 7: Magnetic circuit for the question no.7arrow_forwardWhich of the following statements about the TRIAC is true: O A. None of the other choices are correct O B. TRIACS work in quadrants I and III only O C. TRIACS work in quadrants I, II, and III O D. TRIACS work in quadrants I and II O E. TRIACS work in all four quadrantsarrow_forward
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