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