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Control Systems

Control Systems
The value of 'a' in to give phase margin = 45o will be

 0.707.
 0.9.
 1.18.
 1.414.

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Control Systems
A transfer function has its zero in the right half of the s-plane. The function

 will give stable impulse response
 is minimum phase
 is non-minimum phase
 is positive real

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Control Systems
A lead compensator used for a closed loop controller has the following transfer function For such a lead compensator

 a < b.
 b < a.
 a > kb.
 a < kb.

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

 2
 3
 1
 0

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Control Systems
Time taken by the response to reach and stay within a specified error is called

 Peak overshoot.
 Raise time.
 Peak time.
 Settling time.

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Control Systems
Transfer function of zero order hold response is

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

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