If X=√-1 then the value of Xx is

1.   E-x/2

2.  Ex/2

3.  x

4.  1

View Answer  
4
Correct Answer :

 E-x/2


Explanation :
No Explanation available for this question

Given   f(z)=  If C is a counter clock wise path in the z-plane such that  the value of    is

1.  -2

2.  -1

3.  1

4.  2

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

In the circuit shown below, the current through the inductor is

1.  

2.  

3.  

4.  0

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4
Correct Answer :


Explanation :
No Explanation available for this question

A system with transfer function    is excited by sin(ωt), the steady-state output of the system is zero at

1.  ω =1rad/s

2.  ω =2rad/s

3.  ω =3rad/s

4.  ω =4rad/s

View Answer  
4
Correct Answer :

ω =3rad/s


Explanation :
No Explanation available for this question

In the sum of product function f(X,Y,z)= ∑(2,3,4,5), the  prime implicants are

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If x[n]= (1/3)|n|-(1/2)n u[n] , then the region of convergence (ROC) of its Z-transform in the Z-plane will be

1.  1/3

2.  1/3

3.  1/2

4.  1/3

View Answer  
4
Correct Answer :

1/2<|Z|<3


Explanation :
No Explanation available for this question

The radiation pattern of an antenna in spherical co-ordinates is given by  F(θ)= COS4 θ; 0≤θ≤π/2  the directivity of the antenna is

1.  10db

2.  12.6 dB

3.  11.5dB 

4.  18 dB

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4
Correct Answer :

10db


Explanation :
No Explanation available for this question

A coaxial cable with an inner diameter of 1mm and outer diameter of 2.4 mm is filled with a dielectric of relative permittivity 10.89 Given μ0= 4π*10-7  H/M   F/M the characteristic impedence of the cable is

1.  330

2.  100 ?

3.  143.3 ?

4.  43.4 ?

5.  none

View Answer  
5
Correct Answer :

none


Explanation :
No Explanation available for this question

A source alphabet consist of N symbol with the probability of the first two symbols being the same. A source encoder increases the probability of the first symbol by a small amount ε and decreases that of the second by  ε After encoding, the entropy of the source

1.  increases

2.  remains the same

3.  increases only if N=2 

4.  decreases

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4
Correct Answer :

decreases


Explanation :
No Explanation available for this question

The diodes and capasitors in the circuit shown are ideal the voltage v(t) across the diode D1 is 

1.  Cos (ωt)-1

2.  Sin (ωt)

3.  1- Cos (ωt)

4.  1- Sin (ωt)

View Answer  
4
Correct Answer :

1- Cos (ωt)


Explanation :
No Explanation available for this question
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