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