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