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- seels e A unity feedback system has G(s) as shown below in figure, what is the range K for * ?stability K(1+0.25)(1 +0.0255) () = 51+ 0.001 ) + 0,005 5) 600a square wave. stion 9 vet ered It is the average of the two dc currents that flows into the inverting and non- inverting inputs of an op-amp. d out of OInput Bias Current question O Input Offset Current O Quiescent Operating Current O Feedback Current For the op-amp circuit below, which of the following statements is true? Let Ad = 100,000 and + Vsat = + 5 V. %3D of +6 V on 99- hp 近Steady state errors are only for . .... the open loop systems O none of the mentioned the non-unity feedback systems O the unity feedback systems O O
- Ques 2: What is the Voltage series feedback? Explain the effect of feedback on gain and input, outputimpedanceOne advantage of having feedback in op amp circuit is A.Can control gain B.less complicated C.less input signal D.low gain E.high output voltage F.low bandwidthQI. A siniscidal voltage waveform with 5 V pk-pk and period of 10 as is applied to the input of the op-amp shown in the figure. The open loop gain is 200000 and the supply voltage is +12 . Draw the input and output waveforms showing the time relationship. Vee
- Q. One advantage of having feedback in op amp circuit is A. low gain B. low bandwidth C. can control gain D. high output voltage E. less input signal F. less complicatedQ-4. How many op-amps are required to implement this equation? V1+ R2 V. =- A) 3 B) 4 C) 2 D) 1 Q- 5. For the following feedback circuit. Identify the type of feedback and find the closed loop gain. E A ► VOUT1- Mention any two advantages of Integrated Circuit . 2- For the circuit given below : Vin is a sine wave Vinpp=6 V and Vref=-2.4 V , Assume Vsat=±12V Name the circuit and draw the input and output waveforms . Vin Vref 3- Explain why open-loop op-amp configurations are not used in linear applications? Draw the block diagram of opamp and define the function of each block
- 1- Mention any two non linear applications of op- amp. 2- For the circuit given below : Vin is a sine wave Vinpp=9 V and Vref=2.4 V , Assume Vsat=±12V Name the circuit and draw the input and output waveforms . Vo Vin Vref 3- Explain why open-loop op-amp configurations are not used in linear applications? Draw the block diagram of opamp and define the function of each blockAn op-amp comparator in a firing circuit can produce waveforms at the output of up to 28 V peak-to-peak without any distortion. An inverse cosine-based firing circuit with a voltage range from +14 to -14 (reference voltage) is used to produce a gating signal for the SCR at the desired delay angle. if the reference voltage is 5.92 volts, the delay angle (in degrees) would be: O A. -155 O B. None of the other choices are correct O C. 155 O D.-25 O E. 65a- Zero. b- Slightly different from zero. O Maximum positive or negative. d- An amplified sin wave. 9-Negative feedback reduces @ The feedback fraction. b- Distortion. c- The input offset voltage. d- The open-loop gain. 10-The input impedance of a current-voltage converter is Small. b- Large. c- Ideally zero. d- Ideally infinite. a- 11-In a linear op-amp circuit, the @ Signal are always sin wave. b- Op-amp does not go into saturation. c- Input impedance is ideally infinite. d- Gain-bandwidth product is constant.