A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor is

1.  halved

2.  doubled

3.   increased by four times

4.  not changed

View Answer  
4
Correct Answer :

not changed


Explanation :
No Explanation available for this question

The impedance seen by the source in the circuit in the figure is given by

1.   (0.54 +j0.313) ohms

2.  (4 -j2) ohms

3.   (4.54-j 1.69) ohms

4.  (4+ j2) ohms

View Answer  
4
Correct Answer :

 (4.54-j 1.69) ohms


Explanation :
No Explanation available for this question

Currently I1,I2 and I3 meet at a junction (node) in a circuit. All currents are marked as entering the node. If I1= -6sin (wt)mA and I2 = 8 cos (wt) mA, then I3 will be

1.  10 cos (wt + 36.87) mA

2.  14 cos (wt + 36.87) mA

3.  -14 sin (wt + 36.87) mA

4.  10 cos (wt + 36.87) mA

View Answer  
4
Correct Answer :

10 cos (wt + 36.87) mA


Explanation :
No Explanation available for this question

In an FET as VGS is changed from zero to increasing reverse bias, the value of gm

1.  Increased

2.  Decreased

3.  Remains constant

4.  Falls  suddenly to zero.

View Answer  
4
Correct Answer :

Decreased


Explanation :
No Explanation available for this question

In the circuit given in the figure, if both transistor Q1 and Q2 are identical, then output voltage at T=300 K is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

For the clamping network shown below, resulting output for the applied input will be

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The transistor in the circuit shown is operating in

1.  Cut-off region

2.  Active region

3.  Saturation region

4.  Either in the active or saturation region.

View Answer  
4
Correct Answer :

Saturation region


Explanation :
No Explanation available for this question

Thermal runway is not possible in FET because as the temperature of FET increases

1.  Mobility decreases

2.  Trans conductance increases

3.  Drain conductance increases

4.  None of these.

View Answer  
4
Correct Answer :

Mobility decreases


Explanation :
No Explanation available for this question

All transistors in the circuit in the figure have parameters VTN=1V and π=0 The conduction parameters are as follows: Kn1=400μA/V2 Kn2=200μA/V2 Kn3=100μA/V2 Kn4=80μA/V2. ID1=

1.  0.23μmA

2.  0.62μMA

3.  0.46μmA

4.  0.31μmA.

View Answer  
4
Correct Answer :

0.62μMA


Explanation :
No Explanation available for this question

All transistors in the circuit in the figure have parameters VTN=1V and π=0 The conduction parameters are as follows: Kn1=400μA/V2 Kn2=200μA/V2 Kn3=100μA/V2 Kn4=80μA/V2. ID4=

1.  0.23μmA

2.  0.62μMA

3.  0.46μmA

4.  0.31μmA

View Answer  
4
Correct Answer :

0.62μMA


Explanation :
No Explanation available for this question
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