Electronic Devices and Circuits Silicon is not suitable for fabrication of light emitting diodes because it is An indirect band gap semiconductor Wideband gap semiconductor Narrowband gap semiconductor Direct band gap semiconductor An indirect band gap semiconductor Wideband gap semiconductor Narrowband gap semiconductor Direct band gap semiconductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits In a semiconductor diode, the barrier offers opposition to Free electrons in N-region only Majority as well as minority carriers in both regions Majority carriers in both regions Holes in P-region only Free electrons in N-region only Majority as well as minority carriers in both regions Majority carriers in both regions Holes in P-region only ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits How many free electrons does a p type semiconductor has? Only those produced by thermal energy Those produced by doping as well as thermal energy Any of the above Only those produced by doping Only those produced by thermal energy Those produced by doping as well as thermal energy Any of the above Only those produced by doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits In the sale of diamonds the unit of weight is carat. One carat is equal to 150 mg 100 mg 500 mg 200 mg 150 mg 100 mg 500 mg 200 mg ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits For a NPN bipolar transistor, what is the main stream of current in the base region? Diffusion of electrons Drift of holes Diffusion of holes Drift of electrons Diffusion of electrons Drift of holes Diffusion of holes Drift of electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Devices and Circuits Assertion (A): In p-n-p transistor collector current is termed negative.Reason (R): In p-n-p transistor holes are majority carriers. Both A and R are true but R is not a correct explanation of A Both A and R are true and R is correct explanation of A A is false but R is true A is true but R is false Both A and R are true but R is not a correct explanation of A Both A and R are true and R is correct explanation of A A is false but R is true A is true but R is false ANSWER DOWNLOAD EXAMIANS APP