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