Electronic Principles What form of energy is used for creating static electricity? Mechanical energy Chemical energy Light energy Solar energy None of these Mechanical energy Chemical energy Light energy Solar energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which is the most widely used semiconductor? Copper Germanium Silicon All of these None of these Copper Germanium Silicon All of these None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal Four - two negative and two positive None of these One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal Four - two negative and two positive None of these One - a negative terminal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 0.955 A 2.02 A 0.02 A None of these 0.41666666666667 0.955 A 2.02 A 0.02 A None of these 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract None of these Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract None of these Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field ANSWER DOWNLOAD EXAMIANS APP
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