Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Lecturer in Electrical and Electronics Engineering TechnicalEducation (Polytechnics)' And exam conducted in the year 2023. And Question paper code was '131/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
98. The Nyquist plot of a system, whose open loop transfer function has one pole and two zeros
lie to the right of the imaginary axis in s-plane, is shown below. The closed loop system is :
Nyquist Diagram
(A)
رمق
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(0)
99. Suggest a
10
s(s+1)
atleast 10.
(A)
(0)
(0)
(0)
0.6
0.4
0.2
५ Axis
0
Imaginan
-0.2
-0.4
-0.6
Real Axis
Stable
Unstable with one pole to the right of imaginary axis
Unstable with two pole to the right of imaginary axis
Unstable with three pole to the right of imaginary axis
suitable controller / compensator for the system with open loop transfer function
to achieve a phase margin of 40° at 1 rad/s with a velocity error constant of
Proportional Controller
PD Controller
Lag
Lead
100. Identify whether the system exhibits limit cycle, if it exhibits determine the nature and
frequency of limit cycle. The nonlinearity is a saturation with unity gain for the linear region
and saturation occurs at +1.
(A)
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131/2023
Exhibit stable limit cycle of frequency V2 rad/s
Exhibit unstable limit cycle of frequency V2 rad/s
Exhibit semi stable limit cycle of frequency V2 rad/s
No limit cycle exist
18 A