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 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 In arbitrary direction ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits For a NPN bipolar transistor, what is the main stream of current in the base region? Diffusion of electrons Drift of electrons Diffusion of holes Drift of holes Diffusion of electrons Drift of electrons Diffusion of holes Drift of holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Piezoelectric quartz crystal resonators find application where Rectification of the signal is required Signal amplification is required Signal frequency control is required Modulation of signal is required Rectification of the signal is required Signal amplification is required Signal frequency control is required Modulation of signal is required ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits The sensitivity of human eyes is maximum at Red portion of spectrum Green portion of spectrum White portion of spectrum Violet portion of spectrum Red portion of spectrum Green portion of spectrum White portion of spectrum Violet portion of spectrum ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Fermi level is the amount of energy in which Must be given to an electron move to conduction band A hole can have at room temperature None of these An electron can have at room temperature Must be given to an electron move to conduction band A hole can have at room temperature None of these An electron can have at room temperature ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits When avalanche breakdown occurs covalent bonds are not affected. False True False True ANSWER DOWNLOAD EXAMIANS APP
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