Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface. False True TRUE ANSWER : ? YOUR ANSWER : ?
Silicon is not suitable for fabrication of light emitting diodes because it is Direct band gap semiconductor Narrowband gap semiconductor Wideband gap semiconductor An indirect band gap semiconductor TRUE ANSWER : ? YOUR ANSWER : ?
In a bipolar transistor, the emitter base junction has Zero bias Reverse bias Zero or reverse bias Forward bias TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following could be the maximum current rating of junction diode by 126? 100 A 1 A 10 A 20 A TRUE ANSWER : ? YOUR ANSWER : ?
Fermi level is the amount of energy in which An electron can have at room temperature None of these Must be given to an electron move to conduction band A hole can have at room temperature TRUE ANSWER : ? YOUR ANSWER : ?
How many free electrons does a p type semiconductor has? Those produced by doping as well as thermal energy Any of the above Only those produced by doping Only those produced by thermal energy TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following is not a characteristic of a ferroelectric material? High dielectric constant Electric dipole moment No hysteresis Ferroelectric characteristic only above the curie point TRUE ANSWER : ? YOUR ANSWER : ?
Free electrons exist in First band Third band Second band Conduction band TRUE ANSWER : ? YOUR ANSWER : ?
The forbidden energy gap between the valence band and conduction band will be least in case of Semiconductors Insulators Metals All of these TRUE ANSWER : ? YOUR ANSWER : ?
Forbidden energy gap in germanium at 0 K is about 0.78 eV 2 eV 5 eV 10 eV TRUE ANSWER : ? YOUR ANSWER : ?