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 'Workshop Instructor/ Demonstrator/ Instructor Grade II in Electronics and Communication' And exam conducted in the year 2023. And Question paper code was '058/2023'. 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 input impedance of a CRO is nearly
A) 1MQ 8) 10 ६2
C) 100 ६2 D) Zero
In a CRT the highest positive potential is given to
A) focusing electrodes B) cathode
C) vertical deflection plates D) post deflection acceleration anode
Dual trace CRO uses
A) one beam B) two beams
C) three beams D) four beams
In a digital oscilloscope, the A/D converters are usually
A) ramp type B) integrating type
C) flash type D) successive approximate type
Which amplifier is used in an electronic multimeter ?
A) Power amplifier B) Buffer amplifier
C) Differential amplifier D) Wideband amplifier
In a 3% digit 0 - 10V DVM, the most significant digit is
A) % B) Oor1
C) Oor10 D) 3
A moving iron instrument can be used for
A) DC only B) AC only
C) Both DC and AC D) None of the above
A message signal made of multiple frequency components has a maximum frequency
value of 10 kHz. What should be the minimum sampling frequency to sense the
information present in this signal ?
A) 10 kHz B) 5 kHz
C) 15 kHz D) 20 kHz
Which of the following pulse modulation system is analog ?
A) PAM B) DM
C) DPCM D) PCM
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