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331.

An unity feedback system is given as
G(s) = [K(1-s)]/[s(s+3)]
Indicate the correct root locus diagram. [2 marks]

asked in Electronics and Communication Engineering, 2005

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332.

A double integrator plant, G(s) = K/s², H(s) =1 is to be compensated to achieve the damping ratio ξ = 0.5, and an undamped natural frequency, ω_n=5rad/s. Which one of the following compensator G_c(s) will be suitable?
[2 marks]
(A) (s+3)/(s+9.9)
(B) (s+9.9)/(s+3)
(C) (s-6)/(s+8.33)
(D) (s+6)/s

asked in Electronics and Communication Engineering, 2005

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333.

A ramp input applied to an unity feedback system results in 5% steady state error. The type number and zero frequency gain of the system are respectively. [2 marks]
(a) 1 and 20
(b) 0 and 20
(c) 0 and 1/20
(d) 1 and 1/20

asked in Electronics and Communication Engineering, 2005

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334.

A ramp input applied to an unity feedback system results in 5% steady state error. The type number and zero frequency gain of the system are respectively. [2 marks]
(a) 1 and 20
(b) 0 and 20
(c) 0 and 1/20
(d) 1 and 1/20

asked in Electronics and Communication Engineering, 2005

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335.

Given the ideal operational amplifier circuit shown in figure indicate the correct transfer characteristics assuming ideal diodes with zero cut-in voltage.

[2 marks]

asked in Electronics and Communication Engineering, 2005

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336.

In the derivation of expression for peak percent overshoot,

which one of the following conditions is NOT required? [2 marks]
(a) System is linear and time invariant.
(b) The system transfer function has a pair of complex conjugate poles and no zeroes.
(c) There is no transportation delay in the system.
(d) The system has zero initial conditions.

asked in Electronics and Communication Engineering, 2005

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