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