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 (Mechanic Auto Electrical and Electronics) ' And exam conducted in the year 2023. And Question paper code was '002/2023'. 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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02/23
The capacity increase of a lead-acid battery with 20-hour rate of discharge than
10-hour rate of discharge is approximately
A) 100% B) 50% C) 5% D) 20%
The electrolyte for lead-acid battery is prepared by mixing commercial concentrated
sulphuric acid with distilled water approximately in the proportion of
A) 8 parts of acid to 3 parts of water
B) 3 parts of acid to 8 parts of water
C) 5 parts of acid to 8 parts of water
D) 8 parts of acid to 5 parts of water
For trickle charging of lead-acid battery, the amount of charging rate used should
be
A
8,
0
0
10 to 25% of normal charging current
20 to 50% of normal charging current
2 to 5% of normal charging current
20 to 30% of normal charging current
Match the followings for the ignition coil of automobile ignition system.
a. number of turns in primary winding 1. about 20 S.W.G.
b. number of turns in secondary winding 2. 15,000 to 20,000
c. wire thickness of primary winding 3. about 40 S.W.G.
d. wire thickness of secondary winding 4. 200 to 300
A) a-2, b-3, 0-1, 0-4
8) 8-4, 0-2, ௦-1, 6-3
©) 8-1, 0-2) c3, 0-4
൧) 2-4, 0-3, ௦-2, 0-1
In the battery coil ignition system, expression for the instantaneous value of primary
current is
A) नह] 8) பரக