Electronic Principles The core of an electromagnet is said to be in saturation when: None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When a parallel RLC circuit is operating at its resonant frequency: the difference between inductive and capacitive reactance is equal to the resistance capacitive reactance is greater than the inductive reactance inductive reactance is greater than the capacitive reactance inductive reactance is equal to the capacitive reactance None of these the difference between inductive and capacitive reactance is equal to the resistance capacitive reactance is greater than the inductive reactance inductive reactance is greater than the capacitive reactance inductive reactance is equal to the capacitive reactance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 14.8 µA 7.8 µA None of these 10.3 µA 7.75 µA 14.8 µA 7.8 µA None of these 10.3 µA 7.75 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The Norton current is sometimes called the Thevenin current Open-load current Shorted-load current None of these Thevenin voltage Thevenin current Open-load current Shorted-load current None of these Thevenin voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 micro A is: one million amperes one-millionth of an ampere 1000 A 10000A None of these one million amperes one-millionth of an ampere 1000 A 10000A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 60-W light bulb that is operating at 120 V? 180 A None of these 0.083333333333333 0.5A 7200 A 180 A None of these 0.083333333333333 0.5A 7200 A ANSWER DOWNLOAD EXAMIANS APP
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