In Figure,the value of the source voltage is

1.  12 V

2.  24 V

3.  30 V

4.  44 V

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4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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+

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

No relationship can be established betweenand


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)

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

Vc1 = 10V, Vc2 = 5V


Explanation :
No Explanation available for this question
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