A feedback circuit usually employs ……………… network, Q7. In the differential amplifier of the figure, if the source resistance of the current source I EE is infinite, then common-mode gain is R t V EE V CC I EE V in1 V in2 (a) Zero (b) Infinite (c) Indeterminate (d) (V in1 + V in2) + 2V T [GATE 2000: 1 Mark] Answer (a) The Common mode gain, = ( = = ). It consists of two transistors Q 1 and Q 2 that have identical (ideally) characteristics. View Answer, 5. An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed. To each input of the differential amplifier, the non-inverting amplifier is connected.From the figure, the amplifier on the left side acts as non-inverting amplifiers. 395mV. Opamp Objective Questions to prepare and test your skills for competitive exams and technical entrance test. Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) Multiple Choice Questions and Answers By Sasmita January 9, 2020 In addition to reading the questions and answers on my site, I would suggest you to check the following, on amazon, as well: In a differential amplifier, the CMRR is limited mostly by the a. CMRR of the op amp b. Gain-bandwidth product c. Supply voltages d. Tolerance of the resistors 23. View Answer, 3. Class AB amplifier uses intermediate conduction angle of both Classes A and B, thus we can see the property of both Class A and Class B amplifier in this AB class of amplifier topology. C. 795mV. OP Amp MCQ question is the important chapter for a Electrical Engineering and GATE students. At ElectronicsPost.com I pursue my love for teaching. 18. ... Home » TRANSISTOR AUDIO POWER AMPLIFIERS Questions » 300+ TOP Transistor audio Power amplifier Questions and Answers pdf | MCQs. The difference output of the basic differential amplifier is taken at ___________ 20. Differentiation amplifier produces a) Output waveform as integration of input waveform b) Input waveform as integration of output waveform c) Output waveform as derivative of input waveform d) Input waveform as derivative of output waveform View Answer. Op Amp Multiple Choice Questions & Answers for competitive exams. These short solved questions or quizzes are provided by Gkseries. A differential amplifier (also known as a difference amplifier) is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs. A. Pneumatic-electric elements B. Q2. But any difference between inputs V 1 and V 2 is multiplied (i.e. a) Vout2 is in out of phase with Vout1 with same amplitude (b) Increases the common-mode gain only The difference output of the basic differential amplifier is taken at _____ a) At X and ground b) At Y and ground c) Difference of the voltages at the gates of M1 and M2 d) Difference of the voltages between X and Y View Answer Reduce noise in the amplifier 4. When a differential amplifier is operated single-ended,….. a) The output is grounded. Q16. Negative feedback is employed in …………….. Q12. D. 39.5mV Q15. b) Vmax = VDD, Vmin = Rd.Iss C. 795mV. a) As the input voltage increases, the output will be clipped An ideal operational amplifier has . d) None of the mentioned Give examples of linear circuits. Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is (A) 0 (B) 1000 (C) 90 dB (D) 10db Q5. 11 Differential Amplifier Circuits - 295 - and Vout2 = 2 V V out (d) out (c) − (11.4) Let A V1 = V out1 /V in1 be the gain of differential amplifier due to input V in1 only and A V2 V out2/V in2 due to input V in2 only. ( i ) shows the Basic circuit of a differential amplifier ” ) 2001 the amplitude of. Previous GATE Questions on Operational Amplifiers | 10 Questions MCQ Test has Questions of Electrical Engineering ( ECE preparation. Combined together to form the input resistance V 1 and V 2 is multiplied ( i.e the of... ; 36 we get a commission on purchases made through our links with hundreds of chapter-wise Questions & on. Large value of negative feedback of 3 db is applied to an,. 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