The equivalent of the block diagram in the figure, given in

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If the characteristic equation of closed-loop system is s2+2s+2=0,then the system is overdamped

1.  overdamped

2.  critically damped

3.  underdamped

4.  undamped

View Answer  
4
Correct Answer :

underdamped


Explanation :
No Explanation available for this question

The root-locus diagram for a closed-loop feedback system is shown in the figure is.The system is overdamped

1.  only if 0 ≤ K ≤ 1

2.  only if 1 < K < 5

3.  only if K > 5

4.  0 ≤ K < 1 or K < 5

View Answer  
4
Correct Answer :

0 ≤ K < 1 or K < 5


Explanation :
No Explanation available for this question

The Nyquist plot for the open-loop transfer function G(s) of a unity negative feedback system is shown in the figure ,if G(s) has no pole in the right-half of s-plane ,the number of roots of the system characteristic equation in the right-half of s-plane is

1.  0

2.  1

3.  2

4.  3

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

1.  1

2.   -1

3.  0

4.  π/2

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

A bandlimited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through

1.  An RC filter

2.  an envelope detector

3.  a  PLL

4.  an ideal low-pass filter with the appropriate

View Answer  
4
Correct Answer :

an ideal low-pass filter with the appropriate


Explanation :
No Explanation available for this question

the probability of the event(X=4) is

1.  1/2

2.  1/3(2π)1/2

3.  0

4.  1/4

View Answer  
4
Correct Answer :

1/4


Explanation :
No Explanation available for this question

If a signal f(t) has energy E,the energy of the signal f(2t) is equal to

1.  E

2.  E/2

3.  2E

4.  4E

View Answer  
4
Correct Answer :

E/2


Explanation :
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A transmission line is distortionless if

1.  RL=1/GC

2.  RL=GC

3.  LG=RC

4.  RG=LC

View Answer  
4
Correct Answer :

LG=RC


Explanation :
No Explanation available for this question

If a plane electromagnetic wave satisfies the equation (∂2Ex/∂z2)=c2(∂2Ex/∂t2),the wave propagates in the

1.  x-direction

2.  z-direction

3.  y-direction

4.  xy plane at an angle of 450 between the x and  z directions

View Answer  
4
Correct Answer :

z-direction


Explanation :
No Explanation available for this question
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