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