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