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Control Systems

Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K
 KS
 KS2
 K/S

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Control Systems
A unity feedback control system has an open loop transfer function G(s) = k/(s(s² + 7s + 12) The gain k for which s = -1 + j1 will lie on the root locus of the system is

 4
 10
 6.5
 5

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Control Systems
Find the stability for the following transfer function G(s) = 50/s(s+5) ?

 Marginally stable
 Unstable
 Stable
 Critically stable

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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

 2
 4
 8
 6

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Control Systems
The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to

 infinite.
 5.
 2.
 zero.

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

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

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