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Reg No.:__ Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019

Course Code: EC409
Course Name: CONTROL SYSTEMS

Max. Marks: 100 Duration: 3 Hours
PART A
Answer any two full questions, each carries 15 marks. Marks
1 a) Write the differential equations governing the mechanical system. (5)
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b) Obtain the transfer function of the system shown in fig.(3) using block diagram reduction (10)
techniques
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2 a) The forward path transfer function of a unity feedback control system is given by (5) = mas (5)
.Obtain the response of the system to unit step input.
b) ⋅ ‏ووم‎ = -° [> (5)
A unity feedback control system has an open loop transfer function (S) = 5 s+2y 10 the
rise time and peak time for a step input of 12 units.
c) Obtain the time response of a first order system to ramp input and find the steady state error. (5)

3 2) Find the transfer function of the given system using block reduction technique. Verify the (10)

result using Mason’s gain equation

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