# Determine the density of donor atoms , which have to be added to an intrinsic semiconductor smple to produce an n type semiconductor of conductivity 5smple to produce an n type semiconductor of conductivity 5

1.  0.81*1016/cm3

2.  Data insufficient

3.  0.9*105/m3

4.  1.5*102/m3

4

0.81*1016/cm3

Explanation :
No Explanation available for this question

# The saturation current of a p-n junction Ge diode is 250mA/m3 at 300K.Find voltage that would have to be applied across the junction to cause a forward current density of 105A.m2 to flow

1.  1.5mA

2.  2.002mA

3.  3.5mA

4.  None of these

4

3.5mA

Explanation :
No Explanation available for this question

# A silicon n-p-n transistor with β =100 and ICO =20*10-9A is connected in common emitter mode.Find the collector current foa a base current of 0.02mA

1.  1.5mA

2.  2.002mA

3.  3.5mm

4.  None of these

4

2.002mA

Explanation :
No Explanation available for this question

# For an channel JFET with pinch off voltage 5.9V and donor concentration of 1015cm-15.If dielectric constant of Si is 12, the channel width of silicon is

1.  5.6*10-4cm

2.  36mm

3.  1.028*10-2m

4.  2.72*10-4cm

4

2.72*10-4cm

Explanation :
No Explanation available for this question

# Find the minimum width of the depletion region for an ideal MOS capacitor on p-type si with Na=1016cm-3,φs=68.9*10-6.Relative dielectric constant of si 11.8

1.  0.4

2.  0.3

3.  0.5

4.  None of these

4

None of these

Explanation :
No Explanation available for this question

# PIV of a full wave bridge type rectifier should be at least

1.  Vm

2.  2 Vm

3.  Vm/2

4.  None of these

4

Vm

Explanation :
No Explanation available for this question

# Fast diffusion I silicon are

1.  Group I & VIII elements

2.  Group II &III elements

3.  Group III & IV elements

4.  None of these

4

Group I & VIII elements

Explanation :
No Explanation available for this question

# A diode is reverse biased at 3V has junction capacitor of 20 pF. When the reverse bias is increased to 24V, junction capacitor becomes 10pF.The doing of the diode

4.  None of these

4

Explanation :
No Explanation available for this question

# For the voltage amplifier, which of the following is correct

1.  Low input impedance, low output impedance

2.   High input impedance, low output impedance

3.  Low input impedance, High output impedance

4.  High input impedance, High output impedance

4

High input impedance, low output impedance

Explanation :
No Explanation available for this question

# The below figure shows on of the amplifier model having RsR0 Which of the following represents correct amplifier model

1.  Current amplifier

2.  Voltage amplifier

3.  Tansconductance amplifier

4.  Tran Resistance amplifier

4