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Control Systems

Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B *x
None of these
 B d2x/dt2
 B dx/dt

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Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 0
 3
 1
 2

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Control Systems
Which of the following is/are the characteristics of negative feedback control system?

All of these
 Low sensitivity to parameter variations
 Rejection of disturbance signals
 Reduction in gain at the expense of better stability

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Control Systems
In a control system, an integrator is represented by

  1 / s.
  s.
 1 / s2.
  s2.

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Control Systems
Transfer function of zero order hold response is

 (1 / s) × (1 - est).
 (s) × (1 - est).
 (1 / s) × (1 - e-st).
 (1 / s) × e-st.

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Control Systems
Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ?

 1.
 3.
 0.
 2.

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