Which of the following represents the voltage gain of the amplifier when both the transistors are in saturation region

1.  

2.  

3.  

4.  None of these

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

Which of the following represents correct relationship between output & input

1.  

2.  

3.  

4.  None of these

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the differentiator circuit shown in the figure below. Let C = 10 F, R = 100KΩ and Let V1 be a periodic sine wave signal alternating between 0 & 2V, with a frequency of 100 Hz which one of the following represents correct output.

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

For the common source-amplifier circuit the voltage gain (v0/vin) and output resistance Ro is (Assume that M1 is in saturation).

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The equalent resistance (impedance) seen by the source, is (consider op. amp. Having finet gain ‘a’)

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

A voltage follower is implemented with an Op. Amp having rd = 1MΩ, a = 1V/m V (i.e. unloaded gain) and r0 = 1 KΩ, which one of the following represents V0 if voltage follower is driven by a source Vs = 10.000V with Rs = 2 MΩ.

1.   9.970V

2.  10V

3.  10.6V

4.  9V

View Answer  
4
Correct Answer :

9.970V


Explanation :
No Explanation available for this question

If all resistances in the circuit are equal then output of the amplifier is

1.  V0 = -V1 + V2 –V3 + V4- V5 + V6

2.  V0 = +V1 - V2 +V3 - V4- V5 - V6

3.  . V0 = V2 + V4 +V6 –V1- V3 - V5

4.  . V0 = V1 + V2 +V3 + V4+ V5 + V6

View Answer  
4
Correct Answer :

V0 = -V1 + V2 –V3 + V4- V5 + V6


Explanation :
No Explanation available for this question

The desensitivity factor of negative feedback system with a = 103 & A = 102 is. Where a = open loop gain and A = closed loop gain

1.  0.9

2.   0.09

3.  0.009

4.  0.0009

View Answer  
4
Correct Answer :

0.009


Explanation :
No Explanation available for this question

The input impedance seen in figure below is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

An inverting amplifier is implemented with two resister R1 = 100 KΩ and R2 = 200 KΩ, and drives a 2 KΩ load. Assuming an op.amp with rd= 1 MΩ, and r0= 100Ω. Find the minimum gain ‘a’ (i.e unloaded gain or open loop gain) needed to contain deviation of A (closed loop gain) from the ideal within 1%

1.  a≥333V/V

2.  a≥333V/A

3.   a

4.  a≤333V/A

View Answer  
4
Correct Answer :

a≥333V/V


Explanation :
No Explanation available for this question
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