# For an ideal p-channel MOSFET, =300cm2/V-s,W=15,L=1.5,toX=400A0. When biased in the Saturation region at VSG=5V the required rate current is 4 mA. The required ratio of W/L is

1.  15.2

2.  20.2

3.  17.1

4.  12.2

4

17.1

Explanation :
No Explanation available for this question

# For a depletion mode n-MOSFET, Vr=-2.5V kn=1.1mA/V2 of VGS=0v and vDS=0.5V,drain current ID is

1.  9.96mA

2.  5.50mA

3.  6.43mA

4.  2.48mA

4

2.48mA

Explanation :
No Explanation available for this question

# For a depletion mode NMOS, vt=-1.8V,kn=80A/V2. The drain current is ID=2mA.At VGS=0 and VDS=3V the ratio of W/L is

1.  12.43

2.  15.43

3.  13.4

4.  10.4

4

15.43

Explanation :
No Explanation available for this question

# What is order of differential equation in a R-L or R-C circuit

1.  0

2.  1

3.  2

4.  3

4

1

Explanation :
No Explanation available for this question

# A GaAs pn+ junction LED Has the following parameters Dn=20cm2/s Dp=10cm2/s Nd=5*1017cm-3 Na=1016cm-3 =10ns=10ns The injection efficiency of the LED is

1.  0.83

2.  0.75

3.  0.44

4.  0.98

4

0.98

Explanation :
No Explanation available for this question

# What is the solution of the differential equation dy/dt + 3y =5

1.  y=5e-3t+c

2.  y=5e3t+c

3.  y=3e-5t+c

4.  None of these

4

y=5e3t+c

Explanation :
No Explanation available for this question

# What is the order of the differential equation for a L-C or R-L-C circuit

1.  0

2.  1

3.  2

4.  3

4

2

Explanation :
No Explanation available for this question

# Consider the following statement related to laser beam

1.  It is highly monochromatic

2.  Has high angular divergence

3.  It is produced by spontaneous emission

4.  It is used In communication wave

5.  it is electromagnetic wave

5

It is highly monochromatic

Explanation :
No Explanation available for this question

# The impulse response of the first order system described by the differential equation dy/dt + 6y = u(t) is

1.  4δ

2.  e-2tu(t)

3.  e-6t

4.  None of these

4

e-6t

Explanation :
No Explanation available for this question

1.  -2e-2tu(t)

2.  -3e-2tu(t)

3.  -4e-2tu(t)

4.  5e-2tu(t)

4