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