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