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 'Assistant Professor in Mechanical Engineering' And exam conducted in the year 2023. And Question paper code was '099/2023'. 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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099/23
Choose the true statement from the following options.
76
A) Parameters of the laminar boundary layer vary as Re,
%
B) Parameters of the turbulent boundary layer vary as Rey
C) Laminar boundary layer develops more rapidly than turbulent boundary layer
D) None of the above
When the boundary layer on the cylinder becomes turbulent, the drag coefficient is
reduced by a factor of about
A) 16 B) 8 04 0) 2
The universal velocity distribution for turbulent flow in a channel is well represented by
[Where u* is frictional velocity = ೮0101]
*
A) ೮. 225/5 +5.0 B) مو لامو لل
ப ப है
u* u* u ப்
०) —= ச 0) —=~
u ப 1
Specific speed of a turbine and pump are (symbols have the usual meaning)
A) wo 11 क
॥ ப“
8) and wo respectively
H4 ப
9) we and wa respectively
۰ ۷
D) MP and we respectively
۰ H
A laminar boundary layer occurs over a flat plate at zero incidence to the flow. The
thickness of boundary layer at a section 1.5 m from leading edge is 2 mm. The
thickness of boundary layer at a section 3 m from the leading edge will be
A) 2.178 mm 8) 3.872 mm C) 2.828 mm D) 3.828 mm