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Electronic Instrumentation and Control: Response to Control system
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Electronic Instrumentation and Control: Response to Control system
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25 Questions

1. The step response of the system is c(t) = 10+8e-t-4/8e-2t . The gain in time constant form of transfer function will be:
2. Standard test signals in control system are:
3. The transfer function of a system is G(s) = 100/(s+1) (s+100). For a unit step input to the system the approximate settling time for 2% criterion is:
4. Systems of type higher than 1 are not employed in practice.
5. Consider the input with the inputs 4 u(t) and the impulse response 5 +7 , the time constants of the output are,
6. The damping ratio and peak overshoot are measures of:
7. The standard second order system to a unit step input shows the 0.36 as the first peak undershoot, hence its second overshoot is:
8. First order system is defined as :
9. What will be the nature of time response if the roots of the characteristic equation are located on the s-plane imaginary axis?
10. Operations performed by pneumatic controllers:
11. Laplace transform of unit impulse signal is :
12. Control system are normally designed to be:
13. The initial response when output is not equal to input is ______
14. A perfect impulse has one value at zero time instant but otherwise zero elsewhere.
15. Assertion (A): It is observed that step function is first derivative of a ramp function and impulse function is first derivative of a step function.
Reason (R): From the derived time response expression it is concluded that the output time response also follows the same sequence as that of input functions.
16. The transfer function of the system is G(s) =100/(s+1) (s+100). For a unit step input to the system the approximate settling time for 2% criterion is:
17. For the system 2/s+1, the approximate time taken for a step response to reach 98% of its final value is:
18. Consider a system with transfer function G(s) = s+6/Ks2+s+6. Its damping ratio will be 0.5 when the values of k is:
19. In a second order feedback control system natural frequency and damping
20. For a unity feedback system, the open loop transfer function is G(s) = K(s+2)/s2 (s2+7s+12). What is the type of system?
21. Let c(t) be the unit step response of a system with transfer function K(s+a)/(s+K). If c(0+) = 2 and c(∞) = 10, then the values of a and K are respectively.
22. The output in response to a unit step input for a particular continuous control system is c(t)= 1-e-t. What is the delay time Td?
23. The compensator G(s) =5(1+0.3s)/1+0.1s would provide a maximum phase shift of:
24. The loop transfer function of controller Gc(s) is :
25. The ramp input is applied to a unity feedback system with type number 1 and zero frequency 20. What is the percentage of steady state error?

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