31. Hysteresis is desirable in Schmitt-trigger, because A. Energy is to be stored/discharged in parasitic capacitances. B. Effects of temperature would be compensated. C. Devices in the circuit should be allowed time for saturation and desaturation. D. It would prevent noise from causing false triggering. Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
32. The tail current in a differential amplifier equals . A. difference between two emitter currents B. sum of two emitter currents C. collector current divided by current gain D. collector voltage divided by collector resistance Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
33. An ideal OP-amp is an ideal A. Current controlled Current source B. Current controlled voltage source C. Voltage controlled voltage source D. voltage controlled current source Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
34. The differential voltage gain of a differential amplifier is equal to RC divided by A. r'e B. $$\frac{{{\text{r}}{{\text{'}}_{\text{e}}}}}{2}$$ C. 2r'e D. RE Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
35. How many OP-amps are required to implement this equation A. 2 B. 3 C. 4 D. 1 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
36. A certain noninverting amplifier has Ri of 1 kΩ and Rf of 100 kΩ. The closed-loop voltage gain is A. 100000 B. 1000 C. 101 D. 100 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
37. The node voltage at the top of the til resistor is closes to ___________ A. collector supply voltage B. zero C. emitter supply voltage D. tail current times base resistance Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
38. A non inverting closed loop op amp circuit generally has a gain factor A. Less than one B. Greater than one C. Of zero D. Equal to one Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
39. The common mode voltage gain is A. smaller than differentail voltage gain B. equal to differential voltage gain C. greater than differential voltage gain D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
40. A differential amplifier ___________ A. is a part of an Op-amp B. has one input and one output C. has two outputs D. A and B both Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board