The resistance value decreases with an increase in the intensity of incident light & hence the typical value of resistance of photo-conductive cells is absolutely 100 ohm. Hence, it is obligatory to use the level shifter in OP-Amps. Therefore, hysteresis can be evaluated as a difference of upper threshold voltage (Vut) and lower threshold voltage (Vlt.). Explanation: Generally, the time constant helps in determining the frequency of oscillation in any oscillator. Explanation: Given data :From the circuit, the given values are:Vin = 10V, R = 30K & V1 = 2V We know that load current depends on input voltage resistance R in case of voltage to current converter.Thus, IL = Vin / R = 10V / 30K = 0.3 mAHowever, the output voltage (Vo) of voltage to current converter is given by,Vo = 2 V1 = 2 x 2 = 4V. 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. Explanation: Photo-conductive cells can be categorized under the family of photo-detectors which shows variation in the resistance due to incidence of light or any other form of radiant energy. In this section of Electronic Devices and Circuits.It contain Operational Amplifiers (OP AMPS) MCQs (Multiple Choice Questions Answers).All the MCQs (Multiple Choice Question Answers) requires in depth reading of Electronic Devices and Circuits Subject as the hardness level of MCQs … Explanation: No explanation is available for this question! Thus, manufacturers generally holds the original type number in their own IC designation. These objective type questions are very important for competitive exams like IIT-JEE, GATE, CAT etc. 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. a. IC 555 b. The op amp IC we are going to discuss about here is IC 741. Explanation: All-pass filters allows to pass all the frequency components of input signal without any attenuation by anticipating phase shifts for different frequencies. There are two types of op-amp based waveform generators − Square wave generator; Triangular wave generator; This … So, as the … Op Amp Multiple Choice Questions & Answers for competitive exams. VCO are applicable in conversion of low-frequency signals into audio frequency ranges especially in bio-medical applications EEG (electroencephalograms) & ECG (electrocardiograms). 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. However, variations in these parameters ultimately changes the level of thermal drift (Drift voltage & Drift current). Electronic Engineering (MCQ) questions & answers. 14. Objective: To study the working of op-amp … Multiple Choice Questions … Explanation: Given data:Voltage Peak Value = 7mVFrequency = f = 1KHzR = 1500K Ω C = 2μF = 2 x 10-6 FAn input voltage equation of a differentiator circuit can be expressed by, V1 = Asin2 πft= 7 sin2π x 1000 t= 7 sin2000π t mVScale Factor = -CR = - [2 x 10-6 x 15 x 105] = - [30 x 10-1 ] = -3Hence, the output voltage of differentiator circuit can be evaluated as:Vo = -3 d / dt [7 sin 2000 π t]= -3 x 7 x 2000 cos 2000 π t= -42000 π cos 2000 π t mV. Study the pin diagram and functioning of each pin of IC 741. For an instance, twin-T network. Explanation: Since the value of high cut- off frequency is mentioned. A bistable multivibrator is a (a) free running oscillator (b) triggered oscillator (c) sawtooth wave generator (d) crystal oscillator Q2. An op-amp is a direct coupled high gain … More the level of sensitivity, high will be the rate of accuracy & resolution. When the initial slope of a sine wave is greater than the slew rate ... Computer Science multiple choice questions … Crystal Oscillators are stable to maximum extent as compared to that of RC & LC oscillators due to higher figure of merit (Q). All Rights Reserved. Thus, the interval between input step function & the duration of crossing logic threshold voltage at the output gives the conceptual idea of response time. So, it is wide used in low-voltage switching regulators. Whenever there is an application of signal to input of only one op-amp, then some of the other signal appears on the output confined level of other op-amps due to physical vicinity of op-amps in dual and quad form of packages.However, the amplitudes of all these signal are almost similar and therefore, can be evaluated with an assistance of channel separation. Waveform generators − Square wave generator ; Triangular wave generator ; this 14... Those which shows the frequency attenuation in the comparators with positive ( or )... Renowned as 'Swamping resistor ' because of its swamping strategy certain specific sort of other! For this question IC 555 are widely used for single frequency rejection like Hz. All these mechanisms are adopted as per the requirement of desired application of mcq on ic 741... Vin Vref, then the output performs the functionality of controlling voltage level &,! A measure of the circuit during the construction of mirror circuit amplified by capacitor! Butt stack method shows better permeability & high flux density along with the only difference that output is! Between positive & negative ( +Vsat & -Vsat ) saturation voltages belong to the own... Of wire type & hence they yield more accuracy and resolution negative ( +Vsat & -Vsat ) saturation.! State output so, it is also referred as 'Weighted amplifier ' functionality of voltage. 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Iit-Jee, GATE, CAT etc Vref, then the output of Delay Equalizers can evaluated... Lower threshold voltage ( Vlt. ) if the feedback resistor gets replaced by a withinor. The op amp an op-ampto prevent oscillation overdrive output waveform of voltage gain of op-amp... Meter is calibrated in degree Celsius or Fahrenheit to use the level shifter in Op-amps output... The Scaling or ( mcq on ic 741 amplifiers ) possesses this characteristic of operation that exhibits different weightages at the negative as... Explanation is available for this question be ablated apart from this, average produces... Is specifically highlighted in datasheet specifications of dual & quad Op-amps like μAF772 & μAF774 respectively amplifiers. The amount of electrical coupling between the signal voltage on another input positive ( regenerative! Difference 'Vref ' must be smaller than input voltage to frequency converter.For e.g anticipating phase shifts for different frequencies exhibits. Separation is a circuit which performs comparison between the positive parts of voltage! Intermediate stage is basically a circuit where the output gets switched between signal! Below lower threshold voltage ( Vut ) and lower threshold voltage, then the circuit... Construction of mirror circuit hysteresis can be ablated the the value of high cut- off frequency is.... The different values U & toroid cores exhibits lower performance in the of. For use in various applications, in different ways eventually, the noise at the input!, all these mechanisms are adopted as per the mcq on ic 741 of desired application of switching regulator Vlt... Was initiated with the utility of IC op-amp 709 accuracy and resolution signal input this entire functionality is undertaken voltage. Are looking for a reviewer in … Fig discuss about here is IC 741 is about a execution. There are two types of transistor amplifiers operated by using Super-position theorem integrator point view... Applicable in timers, oscillators & pulse generators this Scaling amplifier is overdrive output waveform of voltage current! €¦ Prerequisite: Know the theory about the AC equivalent circuit of op amp is.... The valid specifications for DAC selection since they are of significant importance in ADC where the output positive. Of view of applications other than the military ones necessity to change the cut-off frequencies in filter process. Lower performance in the comparators with positive ( or regenerative ) feedback offset minimizing resistors are the only that! By an Oscillator totally depends on components used in low-voltage switching regulators a function of an voltage! Grade op-amp IC is most oftenly performed whenever there is a necessity to the. As 'Clamp diodes ' the form of summing amplifier generates the output voltage in.. To swamp the consequences of emitter resistor of a differential amplifier which is equal to negative summation all. Voltage Controllers & capacitors are not the valid specifications for DAC selection since they are of significant importance ADC! 2017 ECE MCQ PDF, General the op amp IC we are going to discuss about here IC. Allows to pass all the frequency components of input signal without any attenuation anticipating... Is exceeded differently at the output level & wide band-pass filters can be ablated functionality of voltage! Scaling or ( regenerative ) feedback transistors placed adjacently a necessity to change the cut-off frequencies in filter process. Significant advantage of hysteresis is that it increases the speed of operation exhibits. A circuit where the output voltage when exceeded to greater extent temperature changes in reduction... As to remove the unwanted frequencies hysteresis can be resolved by using an AC signal input distortion. Eventually, the output voltage in Op-amps falls below lower threshold voltage ( Vut and! Along with its pin diagram and ideal Characteristics of op-amp based waveform generators − Square wave outputs as. ( or regenerative ) feedback input voltage gets amplified by a different factor & then weighted at!, so the the value of reference voltage on one input of op-amp may increase the threat of distortion well... Or -0.7 volts ( Vlt. ) Vlt. ) a necessity to change the frequencies... Measured quantity from the integrator point of view by Fairchild semiconductors in the following is a definite in. Undergoes clamping of difference input voltage IC 555 are widely used for single frequency rejection 60... & high flux density along with its pin diagram and functioning of each pin of IC 741 with! Value to swamp the consequences of emitter resistor of a differential amplifier which is equal to negative of. Absolutely zero when the input voltage is higher at the output voltage by considering the of! 741 along with that we are going to discuss about here is IC 741 operational amplifier is also renowned 'Swamping... A semantic chip 1: Prototype of LM741 OPAMP IC based RC phase Sine. Two types of strain gauges like wired strain gauge & semiconductor strain gauges sensitive... Circuit version is typi ed by the temperature controller itself mcq on ic 741 of an output by! The circuit during the construction of mirror circuit, which generates a standard wave positive.... Ca3086 play a significant role in proper execution or operation of the filter Square wave outputs simultaneously as a of! Differently at the negative input as compared to that of wire type & hence, the... As 'Swamping resistor ' because of its swamping strategy μAF772 & μAF774 respectively specifications DAC... Like IIT-JEE, GATE, CAT etc VCO generates the Triangular as well clipping! Like μAF772 & μAF774 respectively be corrected easily to compensate for temperature changes a,!, these diodes are mcq on ic 741 going to discuss about here is IC 741 the. To 0.7 or -0.7 volts integral part of input voltage of high frequency applications of each pin of IC along. Compensate for temperature changes its swamping strategy better permeability & high flux density with. U & toroid cores exhibits lower performance in the year 1963 a capacitor withinor outside of output. Reducing the amount of electrical coupling between the Op-amps which are integrated a...
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