# The system of equations X+Y+Z=6 ,X+4Y+6Z=20 ,X+4Y+λZ=µ  has NO solution for value  λ and µ given by

1.  λ=6,μ=20

2.  λ=6,μ≠20

3.  λ≠6,μ=20

4.  λ≠6,μ≠20

4

λ=6,μ≠20

Explanation :
No Explanation available for this question

# A  fair dice  is  tossed  two times. The probability  that  the second toss results in a value that is higher than the first toss is

1.  2/36

2.  2/6

3.  5/12

4.  ½

4

5/12

Explanation :
No Explanation available for this question

# The gain margin of the system under closed loop unity negative feedback is

1.  0dB

2.  20dB

3.  26 dB

4.  46 dB

4

26 dB

Explanation :
No Explanation available for this question

# The eigen values of a skew-symmetric matrix are

1.  Always zero

2.  Alwatys pure imaginary

3.  Either zero or pure imaginary

4.  Always pure

4

Either zero or pure imaginary

Explanation :
No Explanation available for this question

# A function n (x) satisfied the differential equation (d2n(x)/dx2)-(n(x)/L2)=0. where L is a constant. The boundary conditions are: n(0 )=k and n(∞) =0 .The solution to this equation is

1.  n(x)= K exp(x/L)

2.  n(x)=K exp (-x/√L)

3.  n(x)=k 2exp(-x/L)

4.  n(x)=K exp (-x/L)

5.

5

n(x)=K exp (-x/L)

Explanation :
No Explanation available for this question

# For parallel RLC circuit, which one of the following statements is NOT correct

1.  The bandwidth of the circuit decreases if R is increased

2.  The bandwidth of the circuit remains same if L is increased

3.  At resonance, input impedance is a real quantity

4.  At resonance, the magnitude of input impedance attains its minimum values

4

At resonance, the magnitude of input impedance attains its minimum values

Explanation :
No Explanation available for this question

# At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is

1.  450 cm2 /V-S

2.  1350 cm2 /V-S

3.  1800 cm2 /V-S

4.  3600 cm2 /V-S

4

450 cm2 /V-S

Explanation :
No Explanation available for this question

# Thin gate oxide in a CMOS process in preferably grown using

1.  wet oxidation

2.  dry oxidation

3.  epitaxial oxidation

4.  ion implantation

5.  none

5

ion implantation

Explanation :
No Explanation available for this question

# Consider the z-transform x(z)=5x2+4z-1+3; 0

1.  5δ[n+2]+3 δ[n]+4 δ[n-1]

2.  5δ[n-2]+3 δ[n]+4 δ[n+1]

3.  5[n+2]+3 ?[n]+4 ?[n-1]

4.  5?[n-2]+3 ?[n]+4 ?[n+1]

4

5δ[n+2]+3 δ[n]+4 δ[n-1]

Explanation :
No Explanation available for this question

# Two discrete time system with impulse response h1[n]= δ[n-1] and h2[n]= δ[n-2] are connected in cascade. The overall impulse response of the cascaded system is

1.  δ[n-1]+ δ[n-2]

2.  δ[n-4]

3.  δ[n-3]

4.  δ[n-1] δ[n-2]

4