Kerala PSC Previous Years Question Paper & Answer

Title : Junior Instructor (Mechanic Motor Vehicle)
Question Code : A

Page:7


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Junior Instructor (Mechanic Motor Vehicle)' And exam conducted in the year 2023. And Question paper code was '195/2023'. 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.

page: 7 out of 14
Excerpt of Question Code: 195/2023

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The dual exhaust system has a crossover pipe to :
(A) To increase engine power (B) Helps to exhaust more freely
(C) Help to reduce noise (D) All the above

The lowest possible back pressure in the exhaust system is produced by :
(A) Exhaust Runners (B) Headers
(C) Control valves (D) Mufflers

To relieve fuel pressure is to remove the fuel pump fuse and the :
(^) open the fuel line (B)_ wait two hours
(C) run the engine until it stalls (D) check for trouble code

When replacing a fuel injector, O rings are coated with :
(ಯ) gasoline (B) | silicone — rubber sealant

(C) gasket sealer ൯) clean engine oil

Speed of the engine at the time of engine rpm drop test should :
(^) Drop 50 rpm or more ൯) Increase 50 rpm or more
(C) Not change (D) Drop to zero as the engine stalls

If there is no flow in EGR the causes found are :

(4) Engine overheating (B) Excessive Nox, in the exhaust gas
(C) Detonation (D) All the above

Trouble indicated in Catalytic converter by all the following except :
(A) Small particles coming out the tail pipe
(B) Arotten-egg smell
(C) Excessive exhaust noise

(D) Adefective e oxygen sensor

For Rotating parts of the clutch the inertia should be :
(A) Maximum (B) Minimum
(C) Zero (D) None of the above

For the maximum life of clutch facing the rubbing speed at the time of engagement while the
pressure intensity are not exceed to:

(A) 30 ms to 100 Kpa (B) 35 ms to 120 Kpa
(0) 40msto110 Kpa (D) 45 ms to 120 Kpa

9 195/2023
[P.T.0.]

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