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 'Electrician in KSFDC, Tourism, Agriculture etc' And exam conducted in the year 21. And Question paper code was '121/21'. 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.
121/2021
Maximum : 100 marks
Time : 1 hour and 15 minutes
1. What is the rating factor of cable provided with coarse excess current protection?
(A) 1.14 (B) 1.23
(C) 0.81 (D) 0.787
2. Which type of solder is used for soldering aluminum conductors?
(A) Salammonia rosin (8) Ker-al-lite
(C) Zinc chloride (D) Tallow
8. | How many electrons are there in the third cell of the copper atom?
(A) 18 (B) 32
(C) 2 (D) 8
4. What is the value of electrical conductivity of aluminium conductor?
(A) 56 mho/meter (B) 81 mho/meter
(C) 61 mho/meter (D) 35 mho/meter
5. Which test is conducted to locate the faults in U.G cables?
(^) Short circuit test (B) External growler test
(C) Insulation resistance test (D) Loop test
6. | Which one defines the change in resistance in Ohm (Q) per degree centigrade (°C)?
(A) Temperature co-efficient (B) Laws of resistance
(C) Laws of temperature () Joules law
7. Inthe case of electrolytes a rise in temperature causes :
(A) nochange in resistance ൯) increase in resistance
(C) decrease in resistance (D) 70786 of the above
8. Calculate the hot resistance of 200W / 250V rated lamp :
(A) 31.252 رم 312.52
(C) 62.52 (0) 6252
[.7.0.]