… Explanation: Non-inverting amplifier has greater output voltage than that of its input voltage & is in phase with it. Operational Amplifier, also called as an Op-Amp, is an integrated circuit, which can be used to perform various linear, non-linear, and mathematical operations. There are two types of op-amp based waveform generators − Square wave generator; Triangular wave generator; This … Multiple Choice Questions and Answers on Oscillators. Explanation: Narrow & Wide band-pass filters can be distinguished only on the basis of quality factor. Below enlisted are the steps to evaluate filter components of second order low pass filter for designing purpose.Step 1 : Assume R2 = R3 = R & C1 = C2 = C. Step 2 : Select the value of C = 1μ F Suppose that C1 = C2 = C = 0.0047μ F Step 3 : Determine R by using formula R = 1 / 2 π fH CR2 = R3 = 1 / (2 π x 103 x 47 x 10-10) = 33.86k Ω (consider the round figure value i.e. The 741 … The cardinality of differential amplifier can be most probably seen in industrial & instrumentation aspects due to superior ability of rejecting common mode noise voltages. MCQ Heating MCQ Highway Engineering MCQ HMT MCQ Hydraulic M/c MCQ Hydrology MCQ IC Engines MCQ Induction MCQ Induction Motors MCQ Inductors MCQ Industrial Drives MCQ Industrial Engg MCQ Instrumentation MCQ Irrigation Engg MCQ Language Processors MCQ Linux MCQ … All the mentioned parameters tend to infinity except output voltage & resistance so that it becomes feasible for an output to drive infinite number of other devices. Explanation: In accordance to given data, the ac input resistance of the amplifier can be given by,Rif = (R2)¦(R3)¦ [Ri (1+AB)]When [Ri (1+AB)] >> R2 or R3 then, the above equation becomesRif ≈ (R2)¦(R3) ≈ 200K ¦ 200K = 100K ΩThe low frequency cut-off limit can be exaggerated usingfL = 1 / [2 πCi(RiF + R0)] = 1 / [2 π (0.1 x 10 -6) (100K +40 )] = 62.8 HzThe gain of an amplifier is = 1 + (Rf / R1) = 1 + (2M / 100K) = 21From the formula of Unity gain bandwidth,UGB = Af x FH Therefore, fH = UGB / Af = 1 M / 21 = 47.61 KhzBandwidth = FH – FL = 47.61 Khz – 0.0476 KHz = 47.56 KHz &Ideal Maximum Output Voltage Swing = +Vcc = +20Vpp. Apart from this advantage, external resistor also possesses a beneficiary notion of increasing the linearity range of differential amplifiers. Which among the following is a military grade op-amp IC? These objective type questions are very important for competitive exams like IIT-JEE, GATE, CAT etc. 741 Operational Amplifier Applications. A waveform generator is an electronic circuit, which generates a standard wave. IC 741 mainly performs mathematical operations like addition, subtraction, division, multiplication, integration, differentiation etc. Explanation: No explanation is available for this question! I collect a lot of IC-741 circuits or tiny amplifiers using 741 op-amps as main. For an instance, Op-amp 741 is originally developed by Fairchild but it also gets manufactured by different number of manufacturers under the category of their own designations. 15. ANSWER: Unit change in R per unit change in 'l'. Study the pin diagram and functioning of each pin of IC 741. Explanation: Channel separation is a measure of the amount of electrical coupling between the op-amps which are integrated on a semantic chip. So, it is wide used in low-voltage switching regulators. These short solved questions … 1: Prototype of LM741 OPAMP IC based RC Phase Shift Sine Wave Oscillator. Explanation: Hysteresis phenomenon is a dead-band condition where the output switches from +Vsat to -Vsat whenever input value becomes greater than the upper threshold voltage. Explanation: Open loop configuration of Op-amp may increase the threat of distortion as well as clipping of output signal. Capacitor discharge interval in monostable circuits is known as (a) refresh time (b) recovery time (c) dynamic time (d) static time Q3. The IC 741 operational amplifier is used in two methods such as an inverting (-) and a non-inverting (+) The IC 741 Op Amp applications mainly includes an adder, comparator, subtractor, voltage follower, Integrator and differentiator.The circuit diagram of IC 741 op amp is given below. it is limit size value. The Clipping Amplifier Circuit. Thus, the interval between input step function & the duration of crossing logic threshold voltage at the output gives the conceptual idea of response time. If an input is in the form of a sinusoidal waveform then the output will generate a cosine waveform due to direct relationship of output voltage and negative negative integral of input voltage. 2: Image showing Output from LM741 OPAMP IC based RC Phase Shift Sine Wave Oscillator on an … 33.34 - 23.34 = 10 kHz. Explanation: Band-reject filters are those which shows the frequency attenuation in the stop-band while they get passed outside this band. This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Ideal Operational Amplifier”. This input voltage performs the functionality of controlling voltage level & hence, precisely referred as 'Control Voltage'. Explanation: Structural Configuration of a differential amplifier is semantic to wheatstone bridge since the amplification is done between two input signals in exactly similar way just like the outputs of Wheatstone bridge network. Another name of VCO is Voltage to frequency converter.For e.g. This is MCQ Test with 12 Questions. Thus, all pass filters are the means for compensating these phase changes, because of which they are generally termed as “Phase-Correctors” or “Delay Equalizers”. No, IC741 has a low slew rate. Notch filter finds its applications in the aspects of communication & biomedical instruments so as to remove the unwanted frequencies. Materials like cadmium sulphide and silicon are used for photo conductive cells to greater extent since their conductivity is a function of incident radiant energy. Explanation: Offset minimizing resistors are the only means of reducing the amount of output offset voltage. ANSWER: Adjusted Output from signal amplifier is directly proportional to the measured quantity. Determine the output from the following circuit a) 180 o in phase with input … Prerequisite: Know the theory about the experiment. The integrated circuit … Hence, this scaling amplifier is also referred as 'Weighted Amplifier'. Generally, there are mainly two types of strain gauges like wired strain gauge & semiconductor strain gauge. The 741 … What are differential gain and common-mode gain of a differential amplifier? Besides these, instrumentation amplifiers like μ A725, ICL 7605 & LH0036 find their wide range of applications due to dexterity in precision & stability at the most confined level. The transient response affects the settling time while slew rate give rise to distortion if exceeded. This can only be possible when all input resistances belong to the different values. Set 1; Set 2 ) Post navigation. Determine the values of load current and output voltage respectively for the below schematic of … But, in some of the applications like Frequency Modulation (FM), Frequency Shift Keying (FSK) where the frequency needs to be controlled by input voltage. Higher the value of quality factor, more is the selectivity of the filter. This figure of merit conveys that if 'Q' > 10, the filter is considered to be a narrow band-pass filter whereas if 'Q' < 10, then the filter is considered as a narrow band-pass filter. 33k Ω As we know that Rf should be equal to 0.586 x R1, then R1 = 27k Ω)Thus, Rf = 0.586 x 27 = 15.86k Ω By taking into consideration the pot value of about 20k Ω, estimated resistances are R2 = R3 = 33k Ω C2 = C3 = 0.0047μ F R1 = 27k Ω & Rf = 15.8k Ω Step 4 : Since the values of resistors and capacitors are equal , the passband voltage gain must be equal to Af = 1 + (Rf / R1) 1.586However, the gain must satisfy the Butterworth response & hence, the value of R1 must be selected = 100k Ω in order to estimate the value of Rf. Can we use IC 741 for high frequency applications? The voltage gain of IC 741 is about a. Explanation: The thermal drift phenomenon of voltage & current are taken into consideration in accordance to the values of input offset voltage, input bias current & input offset current. Some of the general characteristics of the IC version are : – High gain, on the order of a million – High input imp … The 741 Op Amp IC is a monolithic integrated circuit, comprising of a general purpose Operational Amplifier. There is a capacitor withinor outside of an op-ampto prevent oscillation. Explanation: Integrator is basically a circuit where the output voltage forms an integral part of input voltage. When Vin Vref, then reference voltage is higher at the negative input as compared to that of the positive input. Resistances of photo-conductive cell are noted along with the corresponding light intensities & then the resistances are expressed in terms of ohm while the light intensities are expressed in terms of meter candles (lux). All these major shortcomings were tackled by an internally compensated op-amp IC741 which had a provision of short-circuit protection, absence of latch-up problem & highly stable & proficient at the operational level. The evaluation of the test taken by a candidate will be provided on line after submission of the answer of last question.Duration of The Test- 18 minutes**Note- This test is available only to authorized users.This MCQ is created bySatyajit's ClassesMr. © Copyright 2016. When an amplifier is overdrive output waveform of voltage and current distortion. The pin configuration of IC 741 … Q.182.For IC 741 typical value of input bias current is—————-(a) 10μA (b) 80nA (c) 1mA (d) 30mA. On the other hand, the time required for rising the logic threshold voltage at the output after the driving session of strobe terminal is conducted from zero to one logic level. Here, the diode gets formed with an assistance of transistors placed adjacently. In addition to reading the questions and answers on my site, I would suggest you to check the following, on amazon, as well: … ANSWER: R2, R3 = 33k Ω, C1 = C2 = 0.0047μ F, R1 = 27k Ω & Rf = 15.8k Ω. Explanation: Op-amp ICs varying in the version of 741 are highly approved or sanctioned for military grade since the temperature range lies within -55° to 125°C.
2020 mcq on ic 741