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 'TRADESMAN ELECTRONICS TECHNICAL EDUCATION QUESTION PAPER' And exam conducted in the year 2017. And Question paper code was '061/2017'. 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.
061/2017 O
22. A switched mode power supply operating at 20 KHz to 100 KHz range uses as the
main switching element
ಸಿ) Thyristor B) MOSFET
C) Triac D) UJT
23. Which represents a magnetic transducer ?
A) LVDT
B) Strain gauge
©) Themocouple
D) Photoconductive cell
24. A UJT with ಗ್ದ 5100೧ 8೧6 ಣ್ಣ =4 KQ has intrinsic stand-off ratio
A) 0.6 B) 0.4
C) 5 D) 5/3
25. To generate a 1 MHz signal, the most suitable oscillator is
A) Colpitts oscillator
B) Phase-shift oscillator
C) Wein-bridge oscillator
D) None of these
26. Which material is generally used for LED ?
A) Compounds of silica
B) Compounds of phosphorus
C) Compounds of gallium
D) Compounds of sulphur
27. Which of the following is a unipolar device ?
ಹಿ) P.N. diode B) FET
C) Zener diode D) Ordinary transistor
28. An audio oscillator uses
A) Positive feedback
B) Negative feedback
C) Both positive and negative feedback
D) None of these
