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 'Assistant Engineer (Electrical) - Kerala State Electricity Board Ltd' And exam conducted in the year 2023. And Question paper code was '225/2023'. 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.
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The minimum Nyquist sampling rate = is:
2 1
A = ®) —
೫ a
( ச (D) 22
The discrete time system, y(n)=x(n-1)-6x(n-8) isa:
(A) Dynamic system ൯) Static system
(C) Time varying system () None of the above
Aliasing occurs when sampling frequency @, is (@,,,-band limited signal frequency):
(A) @=2a, (8) ७ <2७,
(0 > १८५, त) 0
Consider the two continuous-time signals defined below:
५७ ೨15153
0, otherwise
x(t) = 1-॥, >1۔- 1
ہن 0, otherwise
These signals are sampled with a sampling period of T = 0.25 seconds to obtain discrete time
signals x,[n] and 2०], respectively. Which one of the following statements is true?
(^) The energy of x,[n] is greater than the energy of x, In]
(B) The energy of x, in] is greater than the energy of x, in]
( x, in] and x, in] have equal energies
(D) Neither x, in] nor X, in] is a finite-energy signal
LVDT is an electrical transformer with —-————— type of core.
(ಹ) Non-contacting (B) Contacting
(0 Fixed core (D) Laminated core
In domestic wiring the total lighting load in a sub-circuit should not be more than:
(A) 2000 W (B) 1000 W
© 7٢ (0) 500 17
17 225/2023
[P.T.0.]