# The voltage Vo is

1.  -0.781 V

2.  -1.562 V

3.  -3.125 V

4.  -6.250 V

4

-3.125 V

Explanation :
No Explanation available for this question

1.  7/20

2.  3/20

3.  19/60

4.  11/20

4

7/20

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  1

2.  π

3.  2

4.  2π

4

1

Explanation :
No Explanation available for this question

# The h parameters of the circuit shown in the figure are

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A  square  pulse  of  3  volts  amplitude  is  applied  to  C-R  circuit  shown  in  the  figure.  Then capacitor is initially uncharged. The output voltage V0 at time t = 2 sec is

1.  3 V

2.  -3 V

3.  4 V

4.  -4 V

4

-3 V

Explanation :
No Explanation available for this question

# A Silicon sample A is doped with 1018 atoms/cm3 of Boron. Another sample B of  identical dimensions  is  doped with  1018  atoms/cm3  of  Phosphorus.  The  ratio  of  electron  to  hole mobility is 3. The ratio of conductivity of the sample A to B is

1.  3

2.  1/3

3.  2/3

4.  3/2

4

1/3

Explanation :
No Explanation available for this question

# A Silicon PN  junction diode under  reverse bias has depletion  region of width 10 μm. The relative permittivity of Silicon, ε r = 11.7 and the permittiveity of free space  ε 0 = 8. 85 x 10-12 F/m. The depletion capacitance of the diode per square meter is

1.  100 μF.

2.  10 μF.

3.  1 μF

4.  20 μF.

4

10 μF.

Explanation :
No Explanation available for this question

# For an npn transistor connected as shown in the figure, VBE = 0.7 volts. Given that reverse saturation  current  of  the  junction  at  room  temperature  300°K  is  10-13  A,  the  emitter current is

1.  30 mA

2.  39 mA

3.  49 mA

4.  20 mA

4

49 mA

Explanation :
No Explanation available for this question

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

1.  Bias current of the inverting input only

2.  Bias current of the inverting and non-inverting inputs only

3.  Input offset current only

4.  Both the bias currents and the input offset current

4