Kerala PSC Previous Years Question Paper & Answer
Page:8
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.
47. An Op-Amp circuit which converts sine wave signal into square wave signal :
(A) Multivibrator (B) Wein bridge oscillator
(C) Schmitt trigger (D) Integrator
48. FIR filters will have transfer function with :
(^) Only poles (B) Only zeroes
(C) Poles and zeroes (D) Only constants
49. The time period of free running multivibrator output cycle of 555 astable multivibrator is :
(A) 1.4/RatRb)C1 (8) 693/(Rat+2Rb)C1
(0) 0.693*(Rat+2Rb)C1 ൯൬) 1.4*(Ra+2Rb)C1
50. A voltage regulator experiences 2 10 م V change in its output voltage when its input voltage
changes by 2V. What is the line regulation rating of the circuit :
(A) ۳۷۷ 6 0 ۲۷
(C) ۷ 00 10 #४ ५४
51. In 8051 microcontroller, what is the contents of register A after the execution of the following
code :
CLR A
ORL #99H
CPLA
(A) 66H (B) 99H
(C) 00H (D) 69H
52. A microprocessor with 12 address lines is capable of addressing :
(A) 1024 locations (B) 2048 locations
(C) 3024 locations (D) 4096 locations
53. centre tap on secondary side. The PIV per thyristor is :
(A) 100V (B) 141.4V
(0 2001 (0) 282.8V
131/2023 10 A