A p-n junction series with a 100 Ω resistor is forward biased o that the current of 100mA flows.If voltage across this combination is instantly reversed to 10V at t=0,then reverse current that flows through the diode at t=0 is approximately given by

1.  0mA

2.  100mA

3.  200mA

4.  50mA

5.  

View Answer  
5
Correct Answer :

100mA


Explanation :
No Explanation available for this question

The transistor gain of the circuit shown in the figure is given by

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

An op-amp is open-loop gain of 105 and open-loop upper cut-off frequency of 10Hz. If this OP-AMP is connected as an amplifier with a closed-loop gain at 100, then new upper cut-off frequency will be

1.  10Hz

2.  100Hz

3.  10kHz

4.   100kHz

View Answer  
4
Correct Answer :

10kHz


Explanation :
No Explanation available for this question

A OP-AMP has an offst voltage of 1 m V and is ideal in all other respects. If this OP-amp is used in the circuit shown in the figure, then output voltage will be (select nearest value)

1.  1mV

2.  1V

3.  ±1 V

4.   0V

View Answer  
4
Correct Answer :

±1 V


Explanation :
No Explanation available for this question

The built-in potential (diffusion potential) in a p-n junction

1.  Is equal to the difference in the fermi level of the two sides, expressed in volts

2.  Increases with the increase in the doping levels of the two sides

3.  Increase with the increase in temperature

4.  All of these

View Answer  
4
Correct Answer :

All of these


Explanation :
No Explanation available for this question

Assuming that operational amplifier shown in the figure is ideal, the current, I, through 1KΩ resistor is

1.  -4m A

2.  -2m A

3.  2m A

4.   4m A

View Answer  
4
Correct Answer :

-4m A


Explanation :
No Explanation available for this question

The circuit shown in the given figure uses as an ideal OP-AMP working with +5v and -5V power supplies. The output voltage V0 is

1.  +5V

2.  -5V

3.  +1V

4.   -1V

View Answer  
4
Correct Answer :

-1V


Explanation :
No Explanation available for this question

In the circuit of shown in the figure, LED will be ON if vi is

1.  >10 V

2.  

3.  >5 V

4.  

View Answer  
4
Correct Answer :

>5 V


Explanation :
No Explanation available for this question

An OP-amp, having a slew rate of 62.8 V/msec, is connected in a voltage follower configuration. If maximum amplitude of the input sinusoid is 10 V, then minimum frequency at which slew rate limited distortion would set in at the output is

1.  1.0 MHz

2.  6.28MHz

3.  10.0 MHz

4.   62.8MHz

View Answer  
4
Correct Answer :

1.0 MHz


Explanation :
No Explanation available for this question

For the circuit of the given figure with an ideal operational amplifier, maximum phase shift of the output Vout with reference to the input Vin is0

1.  00

2.  -900

3.  +900

4.   +180

View Answer  
4
Correct Answer :

+180


Explanation :
No Explanation available for this question
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