# The input pulses to the different stages of the circuits shown in the following must be of

1.  Constant frequency and constant width

2.  Constant frequency bit variable width

3.  Variable frequency bit constant width

4.  Variable frequency as well as variable width

4

Variable frequency as well as variable width

Explanation :
No Explanation available for this question

# The half adder circuit in the given figure has inputs AB =11. The logic level of P and Q outputs will be

1.  P =0 and Q = 0

2.  P = 0 and Q = 1

3.  P =1 and Q = 0

4.  p =1 and Q =1

4

P = 0 and Q = 1

Explanation :
No Explanation available for this question

# The feedback system shown below oscillates at 2 rad/s when

1.   K=2 and a=0.75

2.  K=3 and a=0.75

3.  K=4 and a=0.5

4.  K=2 and a=0.5

4

K=2 and a=0.75

Explanation :
No Explanation available for this question

# The feedback system shown below oscillates at 2 rad/s when

1.   K=2 and a=0.75

2.  K=3 and a=0.75

3.  K=4 and a=0.5

4.  K=2 and a=0.5

4

K=2 and a=0.75

Explanation :
No Explanation available for this question

# Consider the feedback control system shown in figure

1.   Find the transfer function of the System and its characteristic equation

2.  Use the Routh-Hurwitz criterion to determine the range of K for which the system is stable

2

Use the Routh-Hurwitz criterion to determine the range of K for which the system is stable

Explanation :
No Explanation available for this question

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

1.  Only if 0≤K≤1

2.  Only if 1

3.  Only if K>5

4.  If 0≤K5

4

If 0≤K<1 or K>5

Explanation :
No Explanation available for this question

# The root locus plot for a system is given below. The open loop transfer function corresponding to this plot is given by

1.   G(s)H(s)=k(s(s+1)/(s=2)(s+3))

2.  G(s)H(s)=k((s+1)/s(s+2)(s+3)2

3.   G(s)H(s)=k(1/s(s-1)(s=2)(s+3))

4.  G(s)H(s)=k(s+1)/s(s+2)(s+3))

4

G(s)H(s)=k((s+1)/s(s+2)(s+3)2

Explanation :
No Explanation available for this question

# The transfer function of a closed loop system is.T(s)=K/s2+(3-K)s+1). Where K is the forward path gain. The root locus plot of the system is

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# The characteristic equation of a feedback control system is given by s3+5s2+(K+6)s+K=0 Where K>0 is a scalar variable parameter. In the root-locus diagram of the system the asymptotes of the root-loci for large values of K meet at a point in the s-plane, whose coordinates are

1.   (-3, 0)

2.   (-2, 0)

3.   (-1, 0)

4.  (2, 0)

4

(-2, 0)

Explanation :
No Explanation available for this question

1.   0

2.   1

3.  2

4.  3

4