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 Antiparallel to magnetic field In arbitrary direction In the direction of current Normal to both current and magnetic field Antiparallel to magnetic field In arbitrary direction In the direction of current Normal to both current and magnetic field 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 and holes increase 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 but not by the same amount The number of free electrons and holes increase by the same amount The number of free electrons increases The number of free electrons increases but the number of holes decreases ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits How many free electrons does a p type semiconductor has? Only those produced by doping Any of the above Only those produced by thermal energy Those produced by doping as well as thermal energy Only those produced by doping Any of the above Only those produced by thermal energy Those produced by doping as well as thermal energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits In a half wave rectifier, the load current flows For full cycle For less than fourth cycle Only for the negative half cycle of the input signal Only for the positive half cycle of the input signal For full cycle For less than fourth cycle Only for the negative half cycle of the input signal Only for the positive half cycle of the input signal ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Which one of the following is not a characteristic of a ferroelectric material? Electric dipole moment No hysteresis High dielectric constant Ferroelectric characteristic only above the curie point Electric dipole moment No hysteresis High dielectric constant Ferroelectric characteristic only above the curie point ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Which of the following could be the maximum current rating of junction diode by 126? 10 A 20 A 100 A 1 A 10 A 20 A 100 A 1 A ANSWER DOWNLOAD EXAMIANS APP
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