Kerala PSC Previous Years Question Paper & Answer
Page:17
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.
A:-x[n-2]
B:-x[-n+2]
C:-x[-n]
D:-x[-n-2]
Correct Answer:- Option-B
Question82:-The number of lightning strikes in a district is recorded against days of
the year. The data is an example of:
A:-Continuous-time deterministic signal
B:-Discrete-time deterministic signal
C:-Continuous-time random signal
D:-Discrete-time random signal
Correct Answer:- Option-D
Question83:-Considering the unit impulse function 50), which of the following
statements describes property of 5(t)?
A:-Infinite amplitude at t = 0 and unit area
B:-Unit amplitude at t = 0 and infinite area
C:-Unit amplitude at t = 0 and zero area
D:-Infinite amplitude at t = 0 and infinite area
Correct Answer:- Option-A
Question84:-Which of the following functions is a non-periodic one?
Az-2(t)=cos(2t+9)
8 :-०(1) = ००5०४
(पो (८०2४०८४)
D:-zin)=cos("P)+sin()
Correct Answer:- Option-C
Question85:-Consider the system described by: vi)=7{x()=x(coskt, K being a constant.
The system is:
A:-Linear and Time-Invariant
B:-Linear and Time-variant
C:-Non-linear and Time-invariant
D:-Non-linear and Time-variant
Correct Answer:- Option-B
Question86:-Consider the system given by: y[n] = T{x[n]} = 2nx[n]. The system is:
A:-Causal and BIBO unstable
B:-Causal and BIBO stable
C:-Non-causal and BIBO unstable
D:-Non-causal and BIBO stable