Electronic Devices and Circuits Fermi level is the amount of energy in which An electron can have at room temperature Must be given to an electron move to conduction band None of these A hole can have at room temperature An electron can have at room temperature Must be given to an electron move to conduction band None of these A hole can have at room temperature 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 Which one of the following is not a characteristic of a ferroelectric material? No hysteresis Ferroelectric characteristic only above the curie point High dielectric constant Electric dipole moment No hysteresis Ferroelectric characteristic only above the curie point High dielectric constant Electric dipole moment ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Forbidden energy gap in germanium at 0 K is about 0.78 eV 10 eV 2 eV 5 eV 0.78 eV 10 eV 2 eV 5 eV ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits For a P-N diode, the number of minority carriers crossing the junction depends on Rate of thermal generation of electron hole pairs Forward bias voltage Potential barrier None of these Rate of thermal generation of electron hole pairs Forward bias voltage Potential barrier None of these 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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