Electronic Principles What is the smallest number of polarities required for current flow? Three - negative, positive and neutral terminals One - a negative terminal Two - a negative terminal and a positive terminal Four - two negative and two positive None of these Three - negative, positive and neutral terminals One - a negative terminal Two - a negative terminal and a positive terminal Four - two negative and two positive None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used for creating static electricity? Mechanical energy None of these Light energy Chemical energy Solar energy Mechanical energy None of these Light energy Chemical energy Solar energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The south pole of a magnet is the one: that would be repelled by the north pole of another magnet that would be attracted to the earth's south magnetic pole that would be attracted to the earths north magnetic pole None of these that has its molecules arranged in a random pattern that would be repelled by the north pole of another magnet that would be attracted to the earth's south magnetic pole that would be attracted to the earths north magnetic pole None of these that has its molecules arranged in a random pattern ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In an intrinsic semiconductor, the number of free electrons Is less than the number of holes Impossible to say None of these Is greater than the number of holes Equals the number of holes Is less than the number of holes Impossible to say None of these Is greater than the number of holes Equals the number of holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles As the temperature increases, the current gain can be any of the above contant None of these decreases increases can be any of the above contant None of these decreases increases ANSWER DOWNLOAD EXAMIANS APP
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