By Surendra | June 11, 2020 0 Comment 0% 4 Created by Surendra Magnetism and Electromagnetism Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 20 Which of the following is the unit of magnetic flux density ? lumens none of the above tesla weber 2 / 20 Ferrites are materials. ferromagnetic none of the above paramagnetic diamagnetic 3 / 20 The unit of relative permeability is it is dimensionless henry henry/sq. m henry/metre 4 / 20 The direction of magnetic lines of force is from south pole to north pole from one end of the magnet to another from north pole to south pole none of the above 5 / 20 The materials having low retentivity are suitable for making permanent magnets temporary magnets none of the above weak magnets 6 / 20 Which of the following is a ferromagnetic material ? Copper Aluminium Nickel Tungsten 7 / 20 Which of the following is a vector quantity ? Magnetic potential Relative permeability Flux density Magnetic field intensity 8 / 20 The use of permanent magnets is. not made in loud-speakers transformers magnetoes energy meters 9 / 20 Ferrites are a sub-group of paramagnetic materials ferro-magnetic materials non-magnetic materials ferri-magnetic materials 10 / 20 Gilbert is a unit of electromotive force permittivity conductance magnetomotive force 11 / 20 A magnetic field exists around moving charges copper aluminium iron 12 / 20 In the left hand rule forefinger always represents current magnetic field voltage direction of force on the conductor 13 / 20 The main constituent of permalloy is chromium tungsten cobalt nickel 14 / 20 A permeable substance is one which is a good conductor which is a strong magnet through which the magnetic lines of force can pass very easily which is a bad conductor 15 / 20 Air gap has_______eluctance as compared to iron or steel path little zero higher lower 16 / 20 Magnetising steel is normals difficult because it has high permeability it has high specific gravity it has low permeability it corrodes easily 17 / 20 The left hand rule correlates to current induced e.m.f. and direction of force on a conductor self induction mutual induction and direction of force on a conductor magnetic field electric field and direction of force on a conductor current magnetic field and direction of force on a conductor 18 / 20 The ratio of intensity of magnetisation to the magnetisation force is known as relative permeability susceptibility none of the above flux density 19 / 20 Paramagnetic materials have relative permeability equal to unity slightly less than unity slightly more than unity equal to that ferromagnetic mate rials 20 / 20 Tesla is a unit of inductance field strength flux flux density कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। Your score is LinkedIn Facebook Twitter 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
