Kerala PSC Previous Years Question Paper & Answer
Page:14
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Lecturer in Electronics and Instrumentation (Polytechnics)' And exam conducted in the year 2023. And Question paper code was '121/2023/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-A
Question69:-A PLC ladder logic diagram is shown in Fig. Find the equivalent Boolean
logic for the ladder logic
൨
A:-C3=(X1 AND (NOT C1)) OR (X2 OR C2) AND X3
B:-C3 = (X1 OR X2) OR ((NOT C1) OR C2) AND X3
C:-C3 = (X1 AND X2) OR ((NOT C1) AND C2) OR X3
D:-C3 = (X1 OR X2) AND ((NOT C1) OR C2) AND X3
Correct Answer:- Option-D
Question70:-In a biological neuron, what type of signal transmission takes place at
synapse?
A:-Physical process
B:-Chemical process
C:-Both physical and chemical process
D:-None of the above
Correct Answer:- Option-B
Question71:-For a parameter control device, identify the symbol "PI".
A:-Temperature indicate
B:-Flow indicate
C:-Vacuum indicate
D:-Level indicate
Correct Answer:- Option-C
Question72:-According to P and ID, identify the valve type given below
-
A:-Plug valve
B:-Gate valve
C:-Globe valve
D:-Angle valve
Correct Answer:- Option-A
Question73:-Mention the significance of interstage coolers in compressors