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* to obtain maximum induced e.m.f. in dypamo's coil, the plane of the co must be: a) Normal to the magnetic field b) Parallel to the magnetic field c) Inclined by an angle 30 to the magnetic field d) Inclined by an angle 60 to the magnetic field

* to obtain maximum induced e.m.f. in dypamo's coil, the plane of the co must be: a) Normal to the magnetic field b) Parallel to the magnetic field c) Inclined by an angle 30 to the magnetic field d) Inclined by an angle 60 to the magnetic field

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Master of phipsies Ch3 4. To obtain maximun induced c.mf, jn dypamo's coil, the plane of the com must be; a) Normal to the magnetic field b) Parallel to the magnetic field c) Inclined by an angle 30 to the magnetic field d) Inclined by an angle 60 to the magnetic field . The electrie cunent intenslty flowing through an inductive coll becomes steady after a certain time due to: a) The effect of self induction b) The generation of electric currents c) The presence of eddy currents d) The stability of magnetic flux lines around the ooil 6- The curent flowing through the primary coil of the transformer vanishes although it is coenected to the electric source, when no current is taken from its secondary coil, due to: a) The effect of self induction of the primary coil b) The generation of eddy currents c) The increase of its number of tums d) The effect of the mutual inducation 7- la the calibrated resistors the wires are double wounded: a) To decrease the eddy currents b) To increase the resistance of the coil c) To cancel the effect of self induction d) To increase the murual indaction 8- At the moment of starting flowing the electric current in primary coil inside a- secondary one. The induced current in the secondary coil is: a) Forward curent
Transcribed Image Text:Master of phipsies Ch3 4. To obtain maximun induced c.mf, jn dypamo's coil, the plane of the com must be; a) Normal to the magnetic field b) Parallel to the magnetic field c) Inclined by an angle 30 to the magnetic field d) Inclined by an angle 60 to the magnetic field . The electrie cunent intenslty flowing through an inductive coll becomes steady after a certain time due to: a) The effect of self induction b) The generation of electric currents c) The presence of eddy currents d) The stability of magnetic flux lines around the ooil 6- The curent flowing through the primary coil of the transformer vanishes although it is coenected to the electric source, when no current is taken from its secondary coil, due to: a) The effect of self induction of the primary coil b) The generation of eddy currents c) The increase of its number of tums d) The effect of the mutual inducation 7- la the calibrated resistors the wires are double wounded: a) To decrease the eddy currents b) To increase the resistance of the coil c) To cancel the effect of self induction d) To increase the murual indaction 8- At the moment of starting flowing the electric current in primary coil inside a- secondary one. The induced current in the secondary coil is: a) Forward curent
Master of physies Ch3 Questions for the self-evaluation student'n golde, Fist: Multiple cholce queetions 1- The diagram shows a wire carrying a cutrent between ithe poles of a magnet. In which direction does the wire tend to move? a) Inro the paper. b) Out of paper c) Towards the south pole of the magnet d) Towards thc top of the page c) In some other direction 2- Which of the following will not increase the voltage produced by an ac generator? a) Increasing the speed of rotation b) Increasing the number of turns on the coil c) Incicasing the magnetic flux density d) Using a soft- iron core inside the coil Increasing the size of the gap in which the coil rotates. 3- If you have a simple step - up Which of the following corectly described cach part of the transformer? transformer. Power supply Core Primary coil P Secondary coil S A D.c. Steel 00 tums 10 tums B D.c. Iron 10 turns 100 ums C A.c. Iron 100 turns 10 mms D. A.c. Iron 10 turns 100 tums A.c Steel 10 turns 100 turns
Transcribed Image Text:Master of physies Ch3 Questions for the self-evaluation student'n golde, Fist: Multiple cholce queetions 1- The diagram shows a wire carrying a cutrent between ithe poles of a magnet. In which direction does the wire tend to move? a) Inro the paper. b) Out of paper c) Towards the south pole of the magnet d) Towards thc top of the page c) In some other direction 2- Which of the following will not increase the voltage produced by an ac generator? a) Increasing the speed of rotation b) Increasing the number of turns on the coil c) Incicasing the magnetic flux density d) Using a soft- iron core inside the coil Increasing the size of the gap in which the coil rotates. 3- If you have a simple step - up Which of the following corectly described cach part of the transformer? transformer. Power supply Core Primary coil P Secondary coil S A D.c. Steel 00 tums 10 tums B D.c. Iron 10 turns 100 ums C A.c. Iron 100 turns 10 mms D. A.c. Iron 10 turns 100 tums A.c Steel 10 turns 100 turns
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