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