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Control Systems

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

 isotropic.
 none of them.
 elastic.
 homogeneous.

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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 2
 1
 0.5
 4

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Control Systems
Consider the following statements for phase lead compensation:

 nether 1 nor 2
 both 1 and 2
 Phase lead compensation shifts the gain crossover frequency to the right
 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies.

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Control Systems
Which system is also known as automatic control system?

 Either 1 or 2
 Closed loop control system
 Open loop control system
 Nether 1 nor 2

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Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 4
 6
 2
 8

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Control Systems
The magnitude condition for root locus is ..................

 |G(s)H(s)| = 2
 |G(s)H(s)| = 0
 |G(s)H(s)| = ∞
 |G(s)H(s)| = 1

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