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 Mixture of silicon and germanium Germanium None of these Silicon Mixture of silicon and germanium Germanium None of these Silicon ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits As compared to bipolar junction transistor, a FET Is less noisy Has higher input resistance Has better thermal stability All of these Is less noisy Has higher input resistance Has better thermal stability All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Assertion (A): A p-n junction has high resistance in reverse direction.Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases. A is true but R is false Both A and R are true and R is correct explanation of A A is false but R is true Both A and R are true but R is not a correct explanation of A A is true but R is false Both A and R are true and R is correct explanation of A A is false but R is true Both A and R are true but R is not a correct explanation of A ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Silicon is not suitable for fabrication of light emitting diodes because it is Narrowband gap semiconductor 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 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 by the same amount The number of free electrons increases The number of free electrons and holes increase but not by the same amount 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 increases The number of free electrons and holes increase but not by the same amount The number of free electrons increases but the number of holes decreases ANSWER DOWNLOAD EXAMIANS APP
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