Electronic Devices and Circuits Fermi level is the amount of energy in which An electron can have at room temperature A hole can have at room temperature Must be given to an electron move to conduction band None of these An electron can have at room temperature A hole can have at room temperature Must be given to an electron move to conduction band None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits For a NPN bipolar transistor, what is the main stream of current in the base region? Drift of electrons Diffusion of holes Drift of holes Diffusion of electrons Drift of electrons Diffusion of holes Drift of holes Diffusion of electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is In arbitrary direction Normal to both current and magnetic field In the direction of current Antiparallel to magnetic field In arbitrary direction Normal to both current and magnetic field In the direction of current Antiparallel to magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Light dependent resistors are Lightly doped semiconductor Either A or B Highly doped semiconductor Intrinsic semiconductor Lightly doped semiconductor Either A or B Highly doped semiconductor Intrinsic semiconductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Which one of the following is not a characteristic of a ferroelectric material? Electric dipole moment Ferroelectric characteristic only above the curie point No hysteresis High dielectric constant Electric dipole moment Ferroelectric characteristic only above the curie point No hysteresis High dielectric constant ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits In a half wave rectifier, the load current flows For less than fourth cycle For full cycle Only for the positive half cycle of the input signal Only for the negative half cycle of the input signal For less than fourth cycle For full cycle Only for the positive half cycle of the input signal Only for the negative half cycle of the input signal ANSWER DOWNLOAD EXAMIANS APP
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