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