Electronic Devices and Circuits Fermi level is the amount of energy in which An electron can have at room temperature None of these A hole can have at room temperature Must be given to an electron move to conduction band An electron can have at room temperature None of these A hole can have at room temperature Must be given to an electron move to conduction band ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits The amount of photoelectric emission current depends on Intensity of incident radiation None of these Both frequency and intensity of incident radiation Frequency of incident radiation Intensity of incident radiation None of these Both frequency and intensity of incident radiation Frequency of incident radiation 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 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 In arbitrary direction ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Assertion (A): A JFET can be used as a current source.Reason (R): In beyond pinch off region the current in JFET is nearly constant. A is false but R is true A is true but R is false Both A and R are true and R is correct explanation of A Both A and R are true but R is not a correct explanation of A A is false but R is true A is true but R is false Both A and R are true and R is correct explanation of A Both A and R are true but R is not a correct explanation of A 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 holes Diffusion of holes Diffusion of electrons Drift of electrons Drift of holes Diffusion of holes Diffusion of electrons Drift of electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased The number of free electrons increases but the number of holes decreases The number of free electrons and holes increase by the same amount The number of free electrons and holes increase but not by the same amount The number of free electrons increases The number of free electrons increases but the number of holes decreases The number of free electrons and holes increase by the same amount The number of free electrons and holes increase but not by the same amount The number of free electrons increases ANSWER DOWNLOAD EXAMIANS APP
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