Electronic Principles The core of an electromagnet is said to be in saturation when: 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 None of these 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 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 None of these 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 What is a free electron? None of these An electron that has twice the amount of charge of a normal electron An electron that has been freed from its parent atom An electron that has no electrical charge An electron that costs nothing None of these An electron that has twice the amount of charge of a normal electron An electron that has been freed from its parent atom An electron that has no electrical charge An electron that costs nothing ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a: parallel RC circuit parallel RL circuit None of these parallel RLC circuit operated above its resonant frequency purely resistive circuit parallel RC circuit parallel RL circuit None of these parallel RLC circuit operated above its resonant frequency purely resistive circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The value of a capacitor can be made larger by: increasing the area of the plates increasing the voltage applied to the plates decreasing the area of the plates None of these increasing the frequency of the applied voltage increasing the area of the plates increasing the voltage applied to the plates decreasing the area of the plates None of these increasing the frequency of the applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rotating coil of wire in an electric motor is called the: brush loop None of these commutator armature brush loop None of these commutator armature ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If the base supply voltage increases, the Q point moves nowhere up down None of these off the load line nowhere up down None of these off the load line ANSWER DOWNLOAD EXAMIANS APP
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