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