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