51. The input stage of an OP-amp is usually a ___________ A. differential amplifier B. class B push-pull amplifier C. CE amplifier D. swamped amplifier 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
52. A certain OP-amp has bias currents of 50 µA. The input offset current is A. 700 nA B. 99.3 µA C. 49.7 µA D. none of these 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
53. The output voltage Vo of the above circuit is A. -6V B. -5V C. -1.2V D. -0.2V 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
54. For an OP-amp having differential gain Av and common mode gain Ac the CMRR is given by A. $${{\text{A}}_{\text{V}}} + {{\text{A}}_{\text{C}}}$$ B. $$\frac{{{{\text{A}}_{\text{V}}}}}{{{{\text{A}}_{\text{C}}}}}$$ C. $${{\text{A}}_{\text{V}}} + \frac{1}{{{{\text{A}}_{\text{C}}}}}$$ D. $$\frac{{{{\text{A}}_{\text{C}}}}}{{{{\text{A}}_{\text{V}}}}}$$ 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
55. Which of the following amplifier is used in a digital to analog converter? A. Non inverter B. Voltage follower C. Summer D. Difference amplifier 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
56. The input offset current equals the ___________ A. difference between two base currents B. average of two base currents C. collector current divided by current gain D. none of these 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
