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 'Pump Operator ' And exam conducted in the year 2023. And Question paper code was '023/2023/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.
Question57:-The minimum clearance between piston and valves should be
i. 1.5mm
ii. 2mm
iii. 2.5 mm
iv. 3mm
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-C
Question58:-The main reason for the piston scuffing is
i. Insufficient lubrication
ii. Insufficient cooling
iii. Detonation
A:-Only i and iii
-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question59:-The crown side of the piston smaller in diameter than the skirt end is called
i. Taper piston
ii. Wire wound piston
iii. Offset piston
iv. Cam ground piston
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-A
Question60:-Compression rings are generally made of
i. Low carbon steel
ii, Chromium
iii. Aluminium alloy
iv. Fine grained alloy cast iron
A:-Only i
:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-D
Question61:-In six-cylinder engine the angle between crank throw is
i, 90°
ii. 120°
ili, 180°
iv. 360°
A:-Only i
B:-Only ii
C:-Only iii
D:-Only iv
Correct Answer:- Option-B
Question62:-Firing order of an six cylinder engine is
i, 1-5-3-6-2-4
ii. 1-4-2-6-3-5
ili, 1-4-3-2-6-5
A:-Only i and iii
:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-C
Question63:-The boiling point of the coolant in cooling system is raised by
i, Thermostat valve
ii. Coolant pump
iii, Pressure cap
iv. Radiator