By Surendra | June 11, 2020 0 Comment 0% 1 Created by Surendra Electromagnetic Induction Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 20 Which of the following inductor will have the least eddy current losses ? Air core Iron core Powdered iron core Laminated iron core 2 / 20 The inductance of a coil will increase under all the following conditions except when more length for the same number of turns is provided when the number of turns of the coil increase when more area for each turn is provided when permeability of the core increases 3 / 20 The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as capacitance series aiding inductance mutual inductance self-inductance 4 / 20 Air-core coils are practically free from none of the above hysteresis losses both and eddy current losses 5 / 20 In case of an inductance current is proportional to voltage across the inductance both and neither nor magnetic field 6 / 20 Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be quadrupled halved doubled unaffected 7 / 20 A crack in the magnetic path of an inductor will result in increased inductance unchanged inductance zero inductance reduced inductance 8 / 20 Higher the self-inductance of a coil longer the delay in establishing steady current through it lesser its weber-turns greater the flux produced by it lower the e.m.f. induced 9 / 20 A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by the resistance of magnetic path variation in voltage to the coil variation in coil current change of number of turns of coil 10 / 20 In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will decrease increase remain the same initially increase and then decrease 11 / 20 The law that the induced e.m.f. and current always oppose the cause producing them is due to Newton Faraday Lenz Coulomb 12 / 20 The magnitude of the induced e.m.f. in a conductor depends on the amount of flux cut amount of flux linkages flux density of the magnetic field rate of change of flux-linkages 13 / 20 Which of the following circuit elements will oppose the change in circuit current ? Capacitance Inductance All of the above Resistance 14 / 20 A laminated iron core has reduced eddy-current losses because the laminations are insulated from each other more wire can be used with less D.C. resistance in coil the laminations are stacked vertically the magnetic flux is concentrated in the air gap of the core 15 / 20 Which circuit element(s) will oppose the change in circuit current ? Resistance only Inductance only Inductance and capacitance Capacitance only 16 / 20 An open coil has zero resistance and inductance zero resistance and high inductance infinite resistance and normal inductance infinite resistance and zero inductance 17 / 20 As per Faraday’s laws of electromagnetic induction an e.m.f. is induced in a conductor whenever it cuts magnetic flux moves parallel to the direction of the magnetic field lies in a magnetic field lies perpendicular to the magnetic flux 18 / 20 Mutually inductance between two magnetically-coupled coils depends on cross-sectional area of their common core all of the above the number of their turns permeability of the core 19 / 20 Which of the following circuit element stores energy in the electromagnetic field ? Inductance Condenser Variable resistor Resistance 20 / 20 Which of the following is not a unit of inductance ? Henry Volt second per ampere Coulomb/volt ampere All of the above 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
