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 'Junior Instructor (Electronic Mechanic)' And exam conducted in the year 2023. And Question paper code was '081/2023/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.
A:-low positive
B:-low negative
C:-high positive
D:-high negative
Correct Answer:- Option-C
Question11:-Which of the following is an adjustable voltage regulator IC?
A:-LM7805
B:-LM317
C:-LM320
D:-LM340
Correct Answer:- Option-B
Question12:-The forbidden energy gap of Silicon at room temperature is
A:-1.12 eV
B:-5 eV
C:-0.72 eV
D:-0.5 eV
Correct Answer:- Option-A
Question13:-A heavily doped p-type semiconductor material is
A:-positively charged
B:-negatively charged
C:-electrically neutral
D:-None of the above
Correct Answer:- Option-C
Question14:-At a PN-junction, electrons diffuse from the N-region to the P-region
because of the
A:-difference in carrier concentration
B:-attraction of holes in the P-region
C:-potential difference at the junction
D:-None of the above
Correct Answer:- Option-A
Question15:-Which of the following statements about the leakage current in a
semiconductor diode are correct?
(i) Created due to the flow of majority carriers.
(11) Remains the same irrespective of the changes in biasing voltage.
(111) Varies with variation in temperature.
(iv) Of the order of microamperes in silicon and nanoamperes in germanium
A:-(i) and (iv)
B:-(iii) and (iv)