# The damping coefficient of a series R-L-C circuit with R=2, L=3H,C=1/2 F is

1.  3/2

2.  1/3

3.  6

4.  1/2

4

1/3

Explanation :
No Explanation available for this question

# A p-n junction diode is operating in forward bias region. The applied reverse bias at which the ideal reverse current reaches 80% of its reverse saturation value is

1.  41.98 mV

2.  59.6 mV

3.  4.8 mV

4.  42.3 mV

4

41.98 mV

Explanation :
No Explanation available for this question

# For a p-n junction diode the doped concentration are Na=1018 cm-3 and ND=1016 cm-3.The minority carrier hole diffusion coefficient is Dp=12 cm2/s and the minority carrier hole life time is po=3*10-6/s. Cross sectional area is A =2*10-4 cm-2.The reverse saturation is

1.  4*10-5A

2.  1.44*10-5A

3.  4*10-12A

4.  1.44*10-12A

4

1.44*10-5A

Explanation :
No Explanation available for this question

# For a parallel resonant circuit with R=2, L=8H, C=2F, the quality factor is

1.  1/2

2.  1

3.  1/√2

4.  2

4

1

Explanation :
No Explanation available for this question

# The circulating current in a parallel LC circuit at any resonant frequency is

1.  Directly proportional to frequency

2.  Inversely proportional to frequency

3.  Independent of frequency

4.  None of these

4

Independent of frequency

Explanation :
No Explanation available for this question

# For an ideal silicon p-n junction diode Dn=25 cm2/s Dp=10cm2/s Ratio of Nd/Na so that 80% of current in depletion region is carried by electrons is

1.  034

2.  2.53

3.  2.43

4.  0.083

4

2.43

Explanation :
No Explanation available for this question

# The voltage across a capacitor is triangular in waveform, the waveform of current is

1.  Triangular

2.  Trapezoidal

3.  Sinusoidal

4.  Rectangular

4

Rectangular

Explanation :
No Explanation available for this question

# The value of Rin of the network is

1.  1.62

2.  2

3.  (1/3)

4.  (1/2)

4

1.62

Explanation :
No Explanation available for this question

# A Si pn junction diode biased at V=0.72V has bias current IDR =2mA.The minority carrier lifetime is 2 for both n& p regions. The diffusion capacities is

1.

2.  700 nF

3.  772nF

4.  98.6 nF

4

98.6 nF

Explanation :
No Explanation available for this question

1.  238

2.  247

3.  193.75

4.  250

4