Electronic Principles Which one of the following phrasers best describes flux density? The force that maintains lines of force None of these The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The concentration of lines of magnetic force The force that maintains lines of force None of these The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The concentration of lines of magnetic force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Voltage is The smallest electrically charged particle Trie force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom The smallest electrically charged particle Trie force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the diameter of the coil in an inductor: reduces the value of inductance by one-half multiplies the value of inductance by four reduces the value of inductance by one-fourth multiplies the value of inductance by two None of these reduces the value of inductance by one-half multiplies the value of inductance by four reduces the value of inductance by one-fourth multiplies the value of inductance by two None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 628 Ohm Less than 1 Ohm 444 Ohm 100 Ohm None of these 628 Ohm Less than 1 Ohm 444 Ohm 100 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 0.05 mA None of these 3.75 mA 13 mA 3.2 mA 0.05 mA None of these 3.75 mA 13 mA 3.2 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? Number of lines of force None of these Magnetomotive force Flux density Reluctance Number of lines of force None of these Magnetomotive force Flux density Reluctance ANSWER DOWNLOAD EXAMIANS APP
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