By Surendra | June 11, 2020 0 Comment 0% 4 Created by Surendra Magnetism and Electromagnetism Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 20 Gilbert is a unit of conductance magnetomotive force permittivity electromotive force 2 / 20 Which of the following is the unit of magnetic flux density ? weber tesla lumens none of the above 3 / 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 4 / 20 The materials having low retentivity are suitable for making permanent magnets none of the above temporary magnets weak magnets 5 / 20 A magnetic field exists around aluminium copper moving charges iron 6 / 20 In the left hand rule forefinger always represents magnetic field voltage direction of force on the conductor current 7 / 20 Magnetising steel is normals difficult because it has high specific gravity it has low permeability it corrodes easily it has high permeability 8 / 20 Air gap has_______eluctance as compared to iron or steel path higher zero lower little 9 / 20 Which of the following is a ferromagnetic material ? Nickel Copper Aluminium Tungsten 10 / 20 A permeable substance is one through which the magnetic lines of force can pass very easily which is a bad conductor which is a strong magnet which is a good conductor 11 / 20 The use of permanent magnets is. not made in energy meters magnetoes transformers loud-speakers 12 / 20 The direction of magnetic lines of force is from south pole to north pole none of the above from north pole to south pole from one end of the magnet to another 13 / 20 The ratio of intensity of magnetisation to the magnetisation force is known as relative permeability none of the above flux density susceptibility 14 / 20 The main constituent of permalloy is cobalt nickel tungsten chromium 15 / 20 Which of the following is a vector quantity ? Magnetic field intensity Relative permeability Magnetic potential Flux density 16 / 20 The unit of relative permeability is henry/sq. m henry henry/metre it is dimensionless 17 / 20 Paramagnetic materials have relative permeability slightly more than unity equal to unity equal to that ferromagnetic mate rials slightly less than unity 18 / 20 Ferrites are materials. ferromagnetic none of the above paramagnetic diamagnetic 19 / 20 Tesla is a unit of field strength flux density flux inductance 20 / 20 Ferrites are a sub-group of ferri-magnetic materials ferro-magnetic materials non-magnetic materials paramagnetic materials कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। Your score is LinkedIn Facebook Twitter 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
