Can you provide me MCQ of APPSC & AEE – common for Civil & Mechanical Engg. (Paper – II) Question Paper with Key of APPSC (Andhra Pradesh Public Service Commission)?

The MCQ of APPSC & AEE – common for Civil & Mechanical Engg (Paper – II) Question Paper with Key of APPSC (Andhra Pradesh Public Service Commission) are as follows:

The lower limit of the critical Reynolds number below which all disturbances in pipe flow are damped out by viscous action has a value approximately equal to
(1) 1 (2) 500 (3) 1000 (4) 2000
Ans: (4)

The most essential feature of a turbulent flow is
(1) large discharge
(2) High velocity
(3) velocity and pressure at a point exhibit irregular fluctuations of high frequency
(4) velocity at a point remains constant with time
Ans: (3)

The velocity distribution in turbulent flow follows a
(1) parabolic law (2) logarithmic law (3) linear law (4) hyperbolic law
Ans: (2)

Steel and cast iron pipes carrying fluid under pressure are regarded as hydraulically smooth when
(1) the boundary surface is relatively smooth
(2) the roughness projections are of low height
(3) the roughness elements are completely covered by the laminar sub-layer
(4) the laminar layer is thin as compared to the average height of roughness elements
Ans: (3)

The Darcy – Weisbach friction factor ‘f’ which is a direct measure of resistance to flow in pipes is
dependant on
(1) roughness height, diameter and velocity
(2) relative roughness, diameter and viscosity
(3) relative roughness, velocity and viscosity
(4) relative height, diameter, velocity and kinematic viscosity
Ans: (4)

APPSC Question Paper

Attached Files

APPSC Question Paper.pdf (401.7 KB, 88 views)