Op amp numerical problems pdf
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When a number of stages are connected in parallel, the overall gain is the product of the individual stage gains A. How many op-amps are required to implement this equation A. So open-loop op-amp configurations are not used in linear applications. False Answer :- B 5. The curve drawn between output voltage and input differential voltage, for an op-amp, keeping voltage gain A constant is known as voltage transfer curve.

The ideal Opamp output voltage is maintained constant. Differential amplifier is a combination of inverting and noninverting amplifiers and amplifies the voltage difference between input lines neither of which is grounded. The open-loop voltage gain C. A noninverting closed-loop op-amp circuit generally has a gain factor: A. When the difference of the two inputs applied to the two terminals of a differential amplifier is amplified, the resultant gain is termed as differential gain. Explain what is a differential amplifier? In this condition it is known as perfect balance.

With negative feedback, the returning signal A. A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier? Other options are not suitable. Explain what are the applications of an inverting amplifier? Another name for a unity gain amplifier is: A. An ideal operational amplifier has A. By keeping 1 inverting amplifier and three no of sources V1, V2, V3 in series corresponding input resistors R1, R2, R3 , we can get this equation. The closed-loop voltage gain of an inverting amplifier equal to A.

But when the two input terminals are connected to the same input source then the gain established by the differential amplifier is called the common mode gain. An astable multivibrator is also known as a: A. State assumptions made for analyzing ideal op-amp. Input offset voltage may be defined as that voltage which is to be applied between the input terminals to balance the amplifier. Not need an input resistor B. The feedback resistance divided by the input resistance D. Op-amp is used mostly as an integrator than a differentiator because in differentiator at high frequency, gain is high and so high-frequency noise is also amplified which absolutely abstract the differentiated signal.

This is done basically to provide the op-amps with a very high A. The ratio of the input resistance to feedback resistance B. Explain what is an operational amplifier? Explain why open-loop op-amp configurations are not used in linear applications? A non inverting closed loop op amp circuit generally has a gain factor A. Voltage follower has three unique characteristics viz. It is called operational amplifier because it is used for performing different functions like differentiation, addition, integration, subtraction. A portion of the output that provides circuit stabilization is considered to be: A. Explain what kind of negative feedback is present in a noninverting op-amp.

A series dissipative regulator is an example of a: A. What starts a free-running multivibrator? If we give the sinusoidal input in differentiator we will get the output of differentiator as a square output. Define offset voltage as applied to an op-amp. Give examples of linear circuits. In Explain what way is the voltage follower a special case of the non-inverting amplifier? Explain what are differential gain and common-mode gain of a differential amplifier? An operational amplifier, abbreviated as op-amp, is basically a multi-stage, very high gain, direct-coupled, negative feedback amplifier that uses voltage shunt feedback to provide a stabilized voltage gain. Explain what is a voltage transfer curve of an op-amp? Op-amp is used mostly as an integrator than a differentiator.

Explain what is a voltage follower? Adder or summing amplifier is a circuit that provides an output voltage proportional to or equal to the algebraic sum of two or more input voltages multiplied by a constant gain factor. Op-amps used as high- and low-pass filter circuits employ which configuration? Explain what are the advantages of using a voltage follower amplifier? Voltage controlled Voltage source D. If ground is applied to the + terminal of an inverting op-amp, the — terminal will: A. All of the above Answer: C 35. It is controlled by input voltage.

In an inverting amplifier, the input is connected to the minus or inverting terminal of op-amp. The ratio between differential gain and common-mode gain is called: A. Explain what is an inverting amplifier? Inverting amplifier is a very versatile component and can be used for performing number of mathematical stimulation such as analog inverter, paraphrase amplifier, phase shifter, adder, integrator, differentiator. Open-loop gain Answer :- C 19 A differential amplifier has a differential gain of 20,000. An integrator is a circuit that performs a mathematical operation called integration. Effects of temperature would be compensated.