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Control Systems

Control Systems
If a body has identical properties all over, it is known as

 homogeneous.
 elastic.
 isotropic.
 none of them.

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Control Systems
Based on relation between the arm impedances the filters can be categorized into how many types?

  2.
 3.
 4.
 Not classified at all.

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Control Systems
Transfer function of zero order hold response is

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

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Control Systems
A proportional plus integral controller

 it increases rise time
 has high sensitivity
 increases the stability of the system
 both 2 and 3

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Control Systems
A second order under damped system has damping ratio of 0.3. Find the phase margin of the system?

 3°
 60°
 20°
 30°

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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by

 0.5∠0°
 2∠90°
 0.5∠10°
 1∠0°

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