Control Systems - Test 1 - Electronics and Telecommunication Engineering

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Questions

1. Which of the following is an example of an open-loop system?

A.
B.
C.
D.

2. If the unti step response of a system is a unit impulse function, then the transfer function of such a system will be

A.
B.
C.
D.

3. The error response of a second order system to a step input is obtained as: E(t) = 1.66 e-st sin (6t + 37). The damping ratio is

A.
B.
C.
D.

4. In a linear system, an input of 5 sin wt produces in output of 10 cos wt. The output corresponding to input 10 cos wt will be equal to

A.
B.
C.
D.

5. As compared to a closed loop system an open loop system is

A.
B.
C.
D.

6. For a gain constant K, the phase-lead compensator

A.
B.
C.
D.

7. Consider the following properties attributed to stat emodel of a system: (1) State model is unique, (2) State model can be derived from the system transfer function (3) State model can be derived for time variant system. Of these statements:

A.
B.
C.
D.

8. The open loop transfer function of a unity negative feedback control system is given by G (s) = K (s + 2) / (s + 1) (s - 7). For K > 6, the stability characteristics of the open-loop and closed loop configurations of the system are respectively

A.
B.
C.
D.

9. An electromechanical device which accurates a train of step angular movements in response to a train of input pulses on one to one basis is

A.
B.
C.
D.

10. The correct sequence of steps needed to improve system stability is

A.
B.
C.
D.