Upper threshold voltage is

1.  0.9912V

2.  1.0042 V

3.  1.0094V

4.  0.9938 V

View Answer  
4
Correct Answer :

1.0042 V


Explanation :
No Explanation available for this question

Lower threshold voltage is

1.  0.9932 V

2.  0.0093 V

3.  1.0012 V

4.  1.0056 V

View Answer  
4
Correct Answer :

0.0093 V


Explanation :
No Explanation available for this question

For the digital circuit shown in figure, the output Q3 Q2 Q1 Q0 = 0001 initially. After a clock pulse appear the output Q3 Q2 Q1 Q0 will be

1.  0001

2.   0011

3.  0100

4.  1100

View Answer  
4
Correct Answer :

0011


Explanation :
No Explanation available for this question

The output Qn of a J-K flip-flop is zero. It change to 1 when a clock pulse  is applied. The input Jn and Kn are respectively

1.  1 and X

2.  0 and X

3.  X and 0

4.  X and 1

View Answer  
4
Correct Answer :

1 and X


Explanation :
No Explanation available for this question

The input-output transfer function of a plant H(s)=100/s(s+10)2. The plant is placed in a unity negative feedback configuration as shown in the figure below The gain margin of the system under closed loop unity negative feedback

1.   0 dB

2.  20 dB

3.  26 dB

4.  46 dB

View Answer  
4
Correct Answer :

26 dB


Explanation :
No Explanation available for this question

Gc(s) is a lead compensator if

1.  a=1, b=2

2.   a=3, b=2

3.  a=-3, b=-1

4.   a=3, b=1

View Answer  
4
Correct Answer :

a=1, b=2


Explanation :
No Explanation available for this question

The phase of the above lead compensator is maximum at

1.   √2 rad/s

2.  √3 rad/s

3.  √6 rad/s

4.  1/√3 rad/s

View Answer  
4
Correct Answer :

√2 rad/s


Explanation :
No Explanation available for this question

For the feedback control system shown in the figure, the process transfer function is Gp(s)=1/s(s+1), and the application factor of the power amplifier is k≥0. The design specification required for the system, time constant is 1 sec and a damping ratio of 0.707 a. Find the desired locations of the closed loop poles b. Write down the required characteristic equation for the system. Hence determine the PD controller transfer function Gp(s) when K=1 c. Sketch the root-locus for the system

1.  -1+1j

2.  s+2

3.  -3.414

View Answer  
3
Correct Answer :

-3.414


Explanation :
No Explanation available for this question

A linear second-order single –input continuous-time system is described by following set of differential equations x1(t)=-2x1(t)+4x2(t) x2(t)=2x1(t)-x2(t)+u(t) Where x1(t) and x2(t) are state variable and u(t) is the control variable. The system is

1.   Controllable and stable

2.  Controllable but unstable

3.  Uncontrollable and unstable

4.  Uncontrollable but stable

View Answer  
4
Correct Answer :

Uncontrollable but stable


Explanation :
No Explanation available for this question

The state variable representation of the system can be

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question
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