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.Management Sciences
Category: Fluid Mechanics
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
The atmospheric pressure with rise in altitude decreases__________________?
A. linearly
B. first slowly and then steeply
C. first steeply and then gradually
D. unpredictable
E. none of the above
The normal stress is same in all directions at a point in a fluid_______________?
A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
E. in case of an ideal fluid
Practical fluids___________________?
A. are viscous
B. possess surface tension
C. are compressible
D. possess all the above properties
E. possess none of the above properties
Differential monometer is used to measure___________________?
A. pressure in pipes, channels etc.
B. atmospheric pressure
C. very low pressure
D. difference of pressure between two points
E. velocity in pipes
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