## Marks 1

An ideal OPAMP circuit with a sinusoidal input is shown in the figure. The 3 dB frequency is the frequency at which the magnitude of the voltage gain ...

A circuit with an ideal OPAMP is shown. The Bode plot for the magnitude (in dB) of the gain transfer function (Av(j$$\omega$$) = Vout(j$$\omega$$)/Vin...

For the operational amplifier circuit shown, the output saturation voltages are $$ \pm \,\,15V$$. The upper and lower threshold voltages for the circu...

Consider the constant current source shown in the figure below. Let $$\beta $$ represent the current gain of the transistor
The load current I0 th...

The following signal Vi of peak voltage 8V is applied to the non-inverting terminal of an ideal Opamp. The transistor has VBE = 0.7 V, $$\beta \, = \...

In the circuit shown, VO = VOA for switch SW in position A and V0= VOB for SW in position B. Assume that the opamp is ideal.
The value of $${{{V_{OB}...

In the bistable circuit shown, the ideal opamp has saturation levels of $$ \pm 5V.$$ The value of R1 (in k$$\Omega $$ ) that gives a hystersis width...

In the circuit shown using am ideal opamp, the 3-dB cut-off frequency (in Hz) is _____.
...

The circuit shown represents
...

In the differential amplifier shown in the figure, the magnitudes of the common-mode and
differential-mode gains are 𝐴cm and 𝐴d, respectively. If t...

In the low - pass filter shown in the figure, for a cut - off frequency of 5 KHz, the value of R2 (in k$$\Omega $$ ) is _________
...

In the circuit shown below, what is the output voltage (vout ) if a silicon transistor Q and an ideal op-amp are used? ...

The circuit below implements a filter between the input current ii and the output voltage v0. Assume that the op-amp- is ideal, The filter implemented...

The transfer characteristic for the precision rectifier circuit shown below is (assume ideal OP-AMP and practical diodes)
...

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown below is
...

The input resistance Ri of the amplifier shown in the figure is
...

The circuit in the figure is a
...

An ideal Op-Amp is an ideal

If the differential voltage gain and the common mode voltage gain of a differential Amplifier are 48 dB and 2 dB respectively, then it's common mode R...

The ideal Op-Amp has the following characteristics.

In the circuit of figure V0 is
...

If the Op-Amp in the figure, is ideal, than V0 is
...

The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at

One input terminal of high gain comparator circuit is connected to ground and a
sinusoidal voltage is applied to the other input. The output of compar...

In a differential Amplifier, CMRR can be improved by using an increased

An Amplifier a has 6 dB gain and 50 $$\Omega $$ input and output impedances. The noise figure of this Amplifier as shown in the figure is 3 dB. A cas...

The circuit shown in the figure is that of
...

In the given circuit if the voltage inputs V- and V+ are to be Amplified by the same Amplification factor, the value of 'R' should be
...

A change in the value of the Emitter resistance (Re in a difference Amplifier.

An op-Amp is used as a zero-crossing detector. If maximum output available from the Op-Amp is $$ \pm 12\,\,{V_{p - p}}$$ and the slew rate of the Op-...

The frequency compensation is used in OP-Amps to increase its___________

## Marks 2

The amplifier circuit shown in the figure is
implemented using a compensated operational
amplifier (op-amp), and has an open-loop voltage
gain, A0 105...

In the voltage reference circuit shown in the figure, the op-amp is ideal and the transistors Q1,
Q2,….., Q32 are identical in all respects and have i...

In the opamp circuit shown, the Zener diodes Z1 and Z2 clamp the output voltage Vo to +5 V or -5 V. The switch S is intially closed and is opened at...

An opamp has a finite open loop voltage gain of 100. Its input offset voltage Vios (= +5mV) is
modeled as shown in the circuit below. The amplifier i...

For the circuit shown in the figure, R1 = R2 = R3 = 1 Ω, L = 1 µH and C = 1 µF. If the input Vin = cos(106t) , then the overall voltage gain (Vout /V...

An ideal opamp has voltage source V1, V3, V5, ......, VN-1, connected to the non- inverting input and V2, V4, V6, .....VN connected to the inver...

A p-i-n photo diode of responsivity 0.8A/W is connected to the inverting input of an ideal opamp as shown in the figure, +VCC = 15V, - VCC = -15V, L...

For the voltage regulator circuit shown, the input voltage (Vin) is 20V $$ \pm $$ 20% and the regulated output voltage (Vout) is 10 V. Assume the opa...

Assuming that the op-amp in the circuit shown below is ideal, the output voltage V0 (in volts)
...

In the circuit shown, assume that the opamp is ideal. If the gain ($${V_0}/{V_{in}}$$) is -12, the value of R (in K$$\Omega $$) is _____.
...

In the circuit shown, assume that the opamp is ideal. The bridge output voltage V0 (in mV) for $$\delta = 0.05$$ is______.
...

The circuit shown in the figure has an ideal opamp. The oscillation frequency and the condition to sustain the oscillations, respectively, are
...

Assuming that the Op-amp in the circuit shown is ideal, V0 is given by
...

In the voltage regulator circuit shown in the figure, the op - amp is ideal. The BJT has VBE = 0.7 V and $$\beta $$ = 100, and the Zener voltage is 4....

In the circuit shown, the op-amp has finite input impedance, infinite voltage gain and zero input offset voltage. The output voltage Vout is
...

In the circuit shown below the op-amps are ideal. Then Vout in Volts is ...

The circuit shown is a
...

Consider the following circuit using an ideal Op-Amp. The I-V characteristics of the diode is described by the relation
$$$I = {I_0}\left[ {{e^{{V \o...

The Op-Amp circuit shown above represents a
...

Consider the Schmitt trigger circuit shown below.
A triangular wave which goes from -12V to 12V is applied to the inverting input of
the OP-AMP. Ass...

For the Op-Amp circuit shown in the figure, V0 is
...

In the Op-Amp circuit shown, assume that the diode current follows the equation I = Is exp (V/VT) . For Vi = 2V, Vo = V01, and for Vi = 4 V, Vo = V02...

Consider the OP-Amp circuit shown in the figure.
The transfer function $${V_o}\left( s \right)/{V_i}\left( s \right)$$ is
...

Consider the OP-Amp circuit shown in the figure.
If $${V_i} = {V_1}\,\,\sin \left( {\omega \tau + \phi } \right),$$ then the minimum and maximum val...

For the circuit shown in the following figure, the capacitor C is initially uncharged.
At t = 0, the switch S is closed. The voltage VC across the ca...

In an ideal differential amplifier shown in the figure, a large value of (RE).
...

The voltage e0 indicated in the figure has been measured by
an ideal voltmeter. Which of the following can be
calculated?
...

The Op-Amp circuit shown in figure is a filter. The type of filter and its cut-off
frequency are respectively.
...

Given the ideal operational amplifier circuit shown in figure, indicate the correct
transfer characteristics assuming ideal diodes with zero cut-in vo...

In the op-amp circuit given in the figure, the load current iL is
...

The output voltage of the Regulated power supply shown in the figure is
...

If the Op-Amp in the figure is ideal, the output voltage Vout will equal to
...

If the input to the ideal comparator shown in figure is sinusoidal signal of 8V
(peak to peak) without any DC component, then the output of the compar...

The Inverting Op-Amp shown in the figure, has an Open-loop gain of 100. The closed loop gain $${{{V_o}} \over {{V_s}}}$$ is
...

In the figure assume the Op-Amps to be ideal. The output V0 of the circuit is
...

An Amplifier using an Op-Amp with a Slew-Rate SR = V/$$\mu $$sec, has a gain of 40 dB. If this amplifier has to faith fully amplify sinsoidal signals...

If the Op-Amp in the figure has an input offset voltage of 5 mV and an open-loop voltage gain of 10,000, V0 will be
...

The output voltage V0 of the circuit shown in the figure is
...

For the ideal Op-Amp circuit of fig. Determine the output voltage V0
...

Assume that the operational amplifier in figure is deal the current I through the IK ohm resistor is
...

The circuit of fig. uses an ideal OP_Amp for small positive values of Vin, the circuit works as
...

An Op-Amp has an offset voltage of 1mV and is ideal in all other respects. If this OP-Amp is used in the circuit shown in fig. The O/P voltage will be...

If the input to the circuit of figure is a sine wave the output will be.
...

The Op-Amp of fig has a very poor open loop voltage gain of 45 but is otherwise ideal. The gain of the Amplifier equals:
...

The CMRR of the differential Amplifier of the fig is equal to
...

Refer to Fig.
...

The OP-AMP shown in fig. below is ideal. $$R\, = \,\sqrt {L/C.} $$ The phase angle between V0 and Vi at $$\omega = 1/\sqrt {LC} $$ is
...

In Fig. if the CMRR of the operational amplifier is 60dB, then the magnitude of the output voltage is
...

## Marks 5

Assume that the OP_AMP in the figure, ideal
(a) Obtain an expression for V0 in terms of Vs, R, and the reverse saturation current Is of the transi...

Consider the circuit given in fig. using an ideal operational Amplifier.
The characteristics of the diode are given by the relation I = Is $$\left[ ...

Shown that the system in Fig. is a double integrator. In other words, prove that the transfer gain is given by $${{{V_0}\left( s \right)} \over {{V_i}...

Find the output voltage of the following circuit assuming ideal op-amp behavior.
...

Find the output voltage, V0 in the following circuit assuming that the Op-Amps are ideal.
...

Consider the circuit shown in Fig. The circuit uses an ideal operational amplifier. Assuming that the impedances at noodes A and B do not load the pre...

## Marks 8

The Op-Amp in the Fig below is ideal. Find the output when Vi = (1-exp($$ - \alpha t$$)) u(t). Assume the capacitor to be uncharged when the input is...