Kerala PSC Previous Years Question Paper & Answer
Page:13
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Electrical Engineer' And exam conducted in the year 2023. And Question paper code was '70/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
Correct Answer:- Option-C
Question64:-The dominant poles of a servo system are located at -2+j2 and -2-j2.
The damping ratio of the system is
A:-1
B:-0.8
C:-0.707
D:-0.866
Correct Answer:- Option-C
Question65:-The initial slope of the Bode magnitude plot of a type 2 system is
A:--20 dB/decade
B:-20 dB/decade
C:--40 dB/decade
D:-40 dB/decade
Correct Answer:- Option-C
Question66:-A minimum phase system with no zeros has a phase angle of -270° at
its gain cross over frequency. The system is
A:-stable
B:-unstable
C:-marginally stable
D:-conditionally stable
Correct Answer:- Option-B
Question67:-The root locus plot of the system with open loop transfer function ,
G)=x%y Crosses the imaginary axis at :
A:-+j2
B:-0
C:-does not cross
D:-none of the above
Correct Answer:- Option-C
Question68:-The unit step response of the given system, 6=¢i5 :
A:-oscillates at a frequency of 3 rad/sec
B:-no oscillations
C:-oscillates at a frequency of 2/3 rad/sec
D:-oscillates at a frequency of 3/2 rad/sec
Correct Answer:- Option-B
Question69:-Zero initial conditions means that the system is:
A:-having no input
B:-at rest with no energy stored