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