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 arbitrary direction Antiparallel to magnetic field In the direction of current Normal to both current and magnetic field In arbitrary direction Antiparallel to magnetic field In the direction of current ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits The most commonly used semiconductor material is None of these Germanium Mixture of silicon and germanium Silicon None of these Germanium Mixture of silicon and germanium Silicon 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 and holes increase but not by the same amount The number of free electrons increases The number of free electrons and holes increase by the same amount The number of free electrons increases but the number of holes decreases 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 and holes increase by the same amount The number of free electrons increases but the number of holes decreases ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits For a P-N diode, the number of minority carriers crossing the junction depends on Forward bias voltage Rate of thermal generation of electron hole pairs None of these Potential barrier Forward bias voltage Rate of thermal generation of electron hole pairs None of these Potential barrier ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Free electrons exist in Third band Conduction band Second band First band Third band Conduction band Second band First band ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Silicon is not suitable for fabrication of light emitting diodes because it is Wideband gap semiconductor Direct band gap semiconductor An indirect band gap semiconductor Narrowband gap semiconductor Wideband gap semiconductor Direct band gap semiconductor An indirect band gap semiconductor Narrowband gap semiconductor ANSWER DOWNLOAD EXAMIANS APP
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