A silicon abrupt junction has dopant concentration Na=2*1016 cm-3 and Nb=2*1015cm-3.The applied reverse bias is VR=10V the maximum electric field is 106V/cm Space charge width is

1.  2.18

2.  2.5

3.  25

4.  50

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4
Correct Answer :

2.18


Explanation :
No Explanation available for this question

A uniformly doped silicon p+n junction is to be designed such that at a reverse bias of VR=10V the maximum electric field is 106v/m. The maximum doping concentration in n region is

1.  6.4*1017cm-3

2.  6.4*1019cm-3

3.  3.2*1017cm-3

4.  3.2*1017cm-3

View Answer  
4
Correct Answer :

3.2*1017cm-3


Explanation :
No Explanation available for this question

An ideal one sided silicon n*p junction has uniform doping on both sides of the abrupt junction .The doping relation is Nd=40Na.Vbi=0.75V.reverse bias VR=8V Space change width is

1.  1.8

2.  1.6

3.  1.4

4.  1.2

View Answer  
4
Correct Answer :

1.6


Explanation :
No Explanation available for this question

An ideal one sided silicon n*p junction has uniform doping on both sides of the abrupt junction .The doping relation is Nd=40Na.Vbi=0.75V.reverse bias VR=8V Junction Capacitance is

1.  3.8nF/cm2

2.  9.8nF/cm2

3.  6.47nF/cm2

4.  5.4nF/cm2

View Answer  
4
Correct Answer :

6.47nF/cm2


Explanation :
No Explanation available for this question

In a series voltage regulator circuit shown below find the output voltage V0, Given VBE = 0.7 V Vz = 9.3V Β = 50

1.   25V

2.  20V

3.   15V

4.  10V

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4
Correct Answer :

15V


Explanation :
No Explanation available for this question

Linearly of an Op-Amp is achieved by using which of the following.

1.  By using –ve feedback to force Op-Amp to the operate within it’s linear region

2.  Implementing feedback network with linear elements

3.  Both a & b some time along with +ve feedback

4.  Both option a & b are sufficient

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4
Correct Answer :

Both option a & b are sufficient


Explanation :
No Explanation available for this question

The correct location of Q – point for the circuit shown below is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
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The UTP, LTP and Hysteresis width of inverting Schmit Trigger circuit shown below

1.  -5.77V, 5.77V & 11.54V

2.  5.77V, -5.77V & 5.77V

3.  -5.77V, -5.77V & 11.54V

4.  -5.77V, 5.77V & 5.77V

View Answer  
4
Correct Answer :

-5.77V, 5.77V & 11.54V


Explanation :
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The circuit shown below is, where Vin is input sinusoidal signal, (Assume Ideal diode)

1.  Half wave rectifier circuit

2.  Full wave rectifier circuit

3.  Peak detector

4.  None

View Answer  
4
Correct Answer :

Half wave rectifier circuit


Explanation :
No Explanation available for this question

Assume that operational amplifier shown in the figure below is ideal. The current ‘I’ through the 1 kΩ resistor is

1.  2 mA

2.  4 mA

3.   -4 mA

4.  0 mA

View Answer  
4
Correct Answer :

-4 mA


Explanation :
No Explanation available for this question
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