Electronic Principles Most AC power is obtained from: lightning None of these generators batteries oscillators lightning None of these generators batteries oscillators ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons None of these Valence electrons Thermal energy Doping Free electrons None of these Valence electrons Thermal energy Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Four - two negative and two positive One - a negative terminal Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals None of these Four - two negative and two positive One - a negative terminal Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles One henry of inductance is defined as: None of these the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it the amount of counter emf required to reduce a current to 1 A the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second None of these the amount of inductance required to change the frequency of a current by 1 Hz the number of turns of wire in an inductor multiplied by the amount of current flowing through it the amount of counter emf required to reduce a current to 1 A the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Reluctance Magnetomotive force None of these Flux density Number of lines of force Reluctance Magnetomotive force None of these Flux density Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What are the main parts of an atom? None of these Electrons, protons, and neutrons Electrons, protons, and ions Protons only Electrons, ions, and neutrons None of these Electrons, protons, and neutrons Electrons, protons, and ions Protons only Electrons, ions, and neutrons ANSWER DOWNLOAD EXAMIANS APP
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