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

1.

2.

3.

4.

4

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

4

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

4

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

4

3

Explanation :
No Explanation available for this question

1.  1

2.   -1

3.  0

4.  π/2

4

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

4

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

4

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

4

E/2

Explanation :
No Explanation available for this question

# A transmission line is distortionless if

1.  RL=1/GC

2.  RL=GC

3.  LG=RC

4.  RG=LC

4

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

4