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.Management Sciences
Category: Hydraulics and Fluid Mechanics
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately_______________?
A. 1 mm
B. 5 mm
C. 10 mm
D. 20 mm
E. 30 mm
Metacentric height is the distance between the metacentre and___________________?
A. water surface
B. center of pressure
C. center of gravity
D. center of buoyancy
E. none of the above
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is _________________?
A. 400 kg/cm2
B. 4000 kg/cm2
C. 40 x 105 kg/cm2
D. 40 x 106 kg/cm2
E. none of the above
The difference of pressure between the inside and outside of a liquid drop is________________?
A.p = Txr
B.p = T/r
C. p = T/2r
D. p = 2T/r
E. none of the above
Pitot tube is used for measurement of__________________?
A. pressure
B. flow
C. velocity
D. dsscharge
E. viscosity
Euler’s dimensionless number relates the following_______________?
A. inertial force and gravity
B. viscous force and inertial force
C. viscous force and buoyancy force
D. pressure force and inertial force
E. pressure force and viscous force
The horizontal component of buoyant force is__________________?
A. negligible
B. same as buoyant force
C. zero
D. non of these
Free surface of a liquid tends to contract to the smallest possible area due to force of _________________?
A. surface tension
B. viscosity
C. friction
D. cohesion
E. adhesion
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called___________________?
A. upthrust
B. reaction
C. buoyancy
D. metacentre
E. center of pressure
The flow in which conditions do not change with time at any point, is known as _____________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow
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