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