Electronic Principles What is the smallest number of polarities required for current flow? None of these One - a negative terminal Three - negative, positive and neutral terminals Four - two negative and two positive Two - a negative terminal and a positive terminal None of these One - a negative terminal Three - negative, positive and neutral terminals Four - two negative and two positive Two - a negative terminal and a positive terminal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The knee voltage of a diode is approximately equal to the Breakdown voltage Forward voltage None of these Applied voltage Barrier potential Breakdown voltage Forward voltage None of these Applied voltage Barrier potential ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The basic unit of measurement for current is the: None of these ohm watt ampere volt None of these ohm watt ampere volt ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The graph of current gain versus collector current indicates that the current gain is contant varies enormously varies slightly None of these equals the collector current divided by the base current is contant varies enormously varies slightly None of these equals the collector current divided by the base current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? None of these 0.1 A 0.41666666666667 100 A 1000 A None of these 0.1 A 0.41666666666667 100 A 1000 A ANSWER DOWNLOAD EXAMIANS APP
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