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 'Lecturer in Mechanical Engineering ' And exam conducted in the year 2023. And Question paper code was '129/2023'. 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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Flow occurring in a pipe line when a valve is opened :
(A) steady (B) unsteady
(C) laminar (D) vortex
Hydraulic grade line for any flow system as compared to energy line is:
(A) Above
(B) Below
(C) Same level
(D) May be below or above depending upon the velocity of flow
Air vessel is provided at the summit of a syphon :
(ಸಿ) Increase velocity
(B) increase discharge
(C) maintain pressure difference
(1) avoid interruption in flow
For a given centrifugal pump :
(A) _ head varies inversely as a square of speed
(B) discharge varies directly as speed
(C) discharge varies directly as square of speed
(D) power varies directly as speed
The work saved by Fitting an air vessel to a single reciprocating pump is:
(A) 28.9% (B) 32.7%
(© 68.45 (D) 84.8%
Efficiency of Pelton wheel shall be maximum if the ratio of jet velocity to tangential velocity
of wheel is :
(A) 1/2 (8)
(0) 2 ൩൬) 4
The use of a draft tube in a reaction turbine helps to :
(A) prevent air entering
൯) increase the flow rate
(C) convert kinetic energy to pressure energy
(D) eliminates eddies in the downstream
13 129/2023
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