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 The left hand rule correlates to 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 current induced e.m.f. and direction of force on a conductor 2 / 20 The materials having low retentivity are suitable for making none of the above temporary magnets weak magnets permanent magnets 3 / 20 Which of the following is the unit of magnetic flux density ? tesla none of the above lumens weber 4 / 20 Which of the following is a ferromagnetic material ? Aluminium Tungsten Copper Nickel 5 / 20 Ferrites are a sub-group of paramagnetic materials non-magnetic materials ferri-magnetic materials ferro-magnetic materials 6 / 20 Paramagnetic materials have relative permeability slightly more than unity equal to unity slightly less than unity equal to that ferromagnetic mate rials 7 / 20 Magnetising steel is normals difficult because it has high specific gravity it has high permeability it has low permeability it corrodes easily 8 / 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 9 / 20 The unit of relative permeability is henry henry/metre henry/sq. m it is dimensionless 10 / 20 A magnetic field exists around aluminium moving charges iron copper 11 / 20 A permeable substance is one which is a strong magnet through which the magnetic lines of force can pass very easily which is a bad conductor which is a good conductor 12 / 20 The main constituent of permalloy is tungsten chromium cobalt nickel 13 / 20 The use of permanent magnets is. not made in magnetoes energy meters transformers loud-speakers 14 / 20 Which of the following is a vector quantity ? Relative permeability Flux density Magnetic field intensity Magnetic potential 15 / 20 In the left hand rule forefinger always represents direction of force on the conductor voltage magnetic field current 16 / 20 The ratio of intensity of magnetisation to the magnetisation force is known as susceptibility none of the above flux density relative permeability 17 / 20 Air gap has_______eluctance as compared to iron or steel path higher zero little lower 18 / 20 Ferrites are materials. ferromagnetic diamagnetic none of the above paramagnetic 19 / 20 Tesla is a unit of flux density inductance flux field strength 20 / 20 Gilbert is a unit of magnetomotive force permittivity electromotive force conductance 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
