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