# In Figure,the value of the source voltage is

1.  12 V

2.  24 V

3.  30 V

4.  44 V

4

30 V

Explanation :
No Explanation available for this question

# Given X(z)=z/(z - a)2 with |z| > a,the residue of X(z)zn-1 at z=a for n ≥ 0 will be

1.  an-1

2.  an

3.  nan

4.  nan-1

4

an-1

Explanation :
No Explanation available for this question

# Consider function f (x) = (x2 - 4)2 where x is a real number.Then the function has

1.  only one minimum

2.  only two minima

3.  three minima

4.  three maxima

4

three maxima

Explanation :
No Explanation available for this question

# Equation ex – 1 = 0 is required to be solved using Newton's method with an initial guess x0 = -1.Then, after one step of Newton's method,estimate x1 of the solution will be given by

1.  0.71828

2.  0.36784

3.  0.20587

4.  0.00000

4

0.00000

Explanation :
No Explanation available for this question

# A is a m × n full rank matrix with m > n and I is an identity matrix. Let matrix A+ = (ATA)-1 AT. Then, which one of the following statements is FALSE

1.  AA+ A = A

2.  (AA+)2 = AA+

3.  A+A = I

4.  AA+A = A+

4

AA+ A = A

Explanation :
No Explanation available for this question

# A differential equation  (dx/dt) = e-2t u(t) has to be solved using trapezoidal rule of integration with a step size h = 0.01 s.Function u(t) indicates a unit step function.If x(0-) = 0, then value of x at t = 0.01 s will be given by

1.  0.00099

2.  0.00495

3.  0.0099

4.  0.0198

4

0.00495

Explanation :
No Explanation available for this question

# Let P be a 2 x 2 real orthogonal matrix and is a real vector [x1, x2]T with length  .Then,which one of the following statements is correct

1.  ≤ where at least one vector satisfies

2.  =for all vectors

3.  ≥ where at least one vector satisfies>

4.  No relationship can be established betweenand

4

No relationship can be established between and Explanation :
No Explanation available for this question

# Let x(t) = rect (t - (1/2)) (where rect (x) = 1 for -(1/2) ≤ x ≤ (1/2) and zero otherwise).Then if since (x) = (sin (πx))/πx),the Fourier Transform of x(t) + x(-t) will be given be

1.  sinc(ω/2)

2.  2 sinc(ω/2π)

3.  2 sinc(ω/2π) cos (ω/2)

4.  sinc(ω/2π) sin (ω/2)

4

sinc(ω/2)

Explanation :
No Explanation available for this question

# Two perfectly matched silicon transistors are connected as shown in the figure.Assuming the β of the transistors to be very high and the forward voltage drop in diodes to be 0.7 V,the value of current I is

1.  0 mA

2.  3.6 mA

3.  4.3 mA

4.  5.7 mA

4

3.6 mA

Explanation :
No Explanation available for this question

# In the voltage doubler circuit shown in the figure,the switch 'S' is closed at t = 0.Assuming diodes D1 and D2 to be ideal, load resistance to be infinite and initial capacitor voltages to be zero,the steady state voltage across capacitors C1and C2 will be

1.  Vc1 = 10V, Vc2 = 5V

2.  Vc1 = 10V, Vc2 = -5V

3.  Vc1 = 5V, Vc2 = 10V

4.  Vc1 = 5V, Vc2 = -10V

4