On increasing doping depletion region will? increase decrease remains same none of these
The band gap for silicon and germanium is about? 0.7 eV, 0.3eV 1.14eV, 0.67eV none of these
The bandgap for insulators is about? more than 5MeV more than 5eV about 1eV
if anode of diode is at 0.3V at lower w.r.t cathode then diode will be? forward biased reversed biased not forward nor reverse biased none of these
if we apply 5V to reverse bias a pn junction then voltage drop across the diode will be? equal to 5 V less than 5 V more than 5 V none of these
by increasing temperature the potential needed to forward bias and breakdown voltage required will be? increased decreased remains same none of these
ripple factor of HWR and efficiency of FWR is? 1.21 and 31.8% 1.11 & 48% 1.21 & 63.6% none of these
PIV = 2Vp(out) + 0.7 V is the peak inverse voltage for? half wave rectifier full wave bridge rectifier center tap full wave rectifier none of these
A zener diode is heavily doped to…………… the breakdown voltage.? increase reduce no effect of doping on breakdown voltage none of these
voltage-controlled capacitors may be called? zener diode LED TUNNEL DIODES VARCTOR DIODES
IF RED AND BLUE are mixed in equal proportions then the color we will get will be? cyan magenta yellow none of these
when we will decrease the size of quantum dots(nanoarticle) the bandgap will? increase decrease band gap is independent of size of QDs none of these
When a transistor is forward-reverse biased, the voltage gain depends on the internal emitter resistance and the external? base resistance collector resistance. emitter resistance none of these
In saturation, both pn junctions are forward-biased and the collector current is maximum. The transistor ideally behaves like a ……….. switch between collector and emitter? open closed both none of these
Emitter-follower A popular term for a (having a voltage of 1)? common-collector amplifier common-emitter amplifier common-base amplifier none of these
The common-. . . . . . . . . . amplifier has a high voltage gain, but it has a very low input resistance and its current gain is approximately 1.? collector emitter base none of these
A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed? the circuit will become unstable the voltage gain will decrease the voltage gain will increase the Q-point will shift
The input resistance of a common-base amplifier is? very low very high same as CC same as CE
An amplifier that operates in the linear region at all times is? CLASS B CLASS AB CLASS C NONE
Crossover distortion is a problem for? class A amplifier class AB amplifiers class B amplifiers all of these amplifiers
