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 Antiparallel to magnetic field In the direction of current In arbitrary direction Normal to both current and magnetic field Antiparallel to magnetic field In the direction of current ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Piezoelectric quartz crystal resonators find application where Signal amplification is required Signal frequency control is required Rectification of the signal is required Modulation of signal is required Signal amplification is required Signal frequency control is required Rectification of the signal is required Modulation of signal is required 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 holes Diffusion of electrons Drift of electrons Drift of holes Diffusion of holes Diffusion of electrons Drift of electrons Drift of holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Silicon is not suitable for fabrication of light emitting diodes because it is Direct band gap semiconductor Wideband gap semiconductor An indirect band gap semiconductor Narrowband gap semiconductor Direct band gap semiconductor Wideband gap semiconductor An indirect band gap semiconductor Narrowband gap semiconductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits The amount of photoelectric emission current depends on Both frequency and intensity of incident radiation None of these Intensity of incident radiation Frequency of incident radiation Both frequency and intensity of incident radiation None of these Intensity of incident radiation Frequency of incident radiation ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits In a semiconductor diode, the barrier offers opposition to Majority as well as minority carriers in both regions Holes in P-region only Free electrons in N-region only Majority carriers in both regions Majority as well as minority carriers in both regions Holes in P-region only Free electrons in N-region only Majority carriers in both regions ANSWER DOWNLOAD EXAMIANS APP
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