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