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Analog Electronics viva & interview questions

Analog Electronics VIVA & interview questions By Prof. Hitesh Dholakiya Engineering Funda YouTube Channel SSASIT SURAT ENGINEERING FUNDA YOUTUBE CHANNEL SSASIT, SURAT Analog Electronics VIVA & interview questions PROF. HITESH DHOLAKIYA Q-1 What do you mean by operational amplifier? Ans An operational amplifier is a direct- coupled, high gain amplifier used for some mathematical operation such as addition, subtraction, multiplication and integration. Q-2 List the ideal characteristics of an op-amp? Ans An ideal-opamp would have the following characteristics:- 1 Infinite voltage gain 2 Infinite input resistance 3 Zero o/p resistance 4 Zero o/p voltage when (i/p voltage is zero) 5 Infinite Band with 6 infinite common mode Rejection ratio 7 infinite slew rates. Q-3 What are the main features of Ics 741? Ans the main features of Ics 741 are:- 1 No external frequency compensation required.

Ans Common mode rejection ratio define as “it is the ratio of the differential voltage Gain to the common mode gain of an op-amp. CMMR= differential gain/ common mode gain Q-9 What do you mean by SVRR (supply voltage rejection ratio). Ans. The change in an op-amp input –offset voltage, caused by variation in supply voltage

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