The thickness of turbulent boundary layer at a distance x from the leading edge over a flat plate varies as
A.x4/5
B.x5/4
C.x3/5
D.x5/3
E.x1/2
Category: Mechanical Engineering Mcqs
Car shakers are often used for
A.unloading of coal
B.loading of granular materials
C.both (A) and (B) above
D.None of the above
Black holes are celestial bodies which
A.Have strong magentic field
B.Have strong electrical field
C.Do not allow any light to escape outside
D.Are self luminous bodies
The critical points for steels
A.Occur at same temperature for all steels
B.Change the chemical composition of steel
C.May change in number on heating or cooling
D.Cause change in physical properties
E.Indicate the minimum temperature below which structural changes in steel are not possible
For a solar pond with a 1.5 m thick lower convective layer and 1.5 m nonconvective layer the amount of sodium chloride required is about
A.700 kg m-2
B.7000 kg m-2
C.70000 kg m-2
D.70 kg m-2
LVDT converts
A.linear displacement into electrical signal
B.pressure into electrical output
C.strain into electrical output
D.None of the above
Hack-saw blades having the number of teeth as given below are available. Which one would you chose for cutting brass
A.14 teeth per inch
B.18 teeth per inch
C.24 teeth per inch
D.31 teeth per inch
E.40 teeth per inch
The normal stress is the same in all directions at a point in fluid
A.Regardless of the motion of one fluid layer relative to an adjacent layer
B.When there is no motion of one fluid layer relative to an adjacent layer
C.Only when the fluid is frictionless
D.Only when fluid is frictionless and incompressible
E.Only when the fluid has zero viscosity and is at rest
Basic tool in work study is
A.Process chart
B.Planning chart
C.Shop layout
D.Bar chart
E.Stop watch
