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.Management Sciences
Category: Fluid Mechanics
Center of pressure compared to e.g. is___________________?
A. above it
B. below it
C. at same point
D. above or below depending on area of body
E. none of the above
The center of pressure of a surface subjected to fluid pressure is the point_______________?
A. on the surface at which resultant pres-sure acts
B. on the surface at which gravitational force acis
C. at which all hydraulic forces meet
D. similar to metacentre
E. where pressure equivalent to hydraulic thrust will act
Units of surface tension are____________________?
A. energy/unit area
B. distance
C. both of the above
D. it has no units
E. none of the above
Kinematic viscosity is dependent upon__________________?
A. pressure
B. distance
C. level
D. flow
E. density
Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?
A. gas law
B. Boyle’s law
C. Charle’s law
D. Pascal’s law
E. McLeod’s law
For pipes, laminar flow occurs when Roynolds number is__________________?
A. less than 2000
B. between 2000 and 4000
C. more than 4000
D. less than 4000
E. none of the above
Hydrometer is used to determine____________________?
A. specific gravity of liquids
B. specific gravity of solids
C. specific gravity of gases
D. relative humidity
E. density
The buoyancy depends on___________________?
A. mass of liquid displaced
B. viscosity of the liquid
C. pressure of the liquid displaced
D. depth of immersion
E. none of the above
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
A. 10m/sec2
B. 9.81 m/sec2
C. 10.2/m sec
D. 9.75 m/sec2
E. 9 m/sec
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than_______________?
A. frictional force
B. viscosity
C. surface friction
D. all of the above
E. none of the above
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