The hydrostatic equation of pressure variation in an incompressible fluid.
A.P = p/h
B.P = ?/h
C.P = ph
D.P = ?h where ? = specific weight
Category: Fluid Mechanics and Solid Handling Mcqs
The molecular weight of air is 29. The value of R for air in N.m/kg. K is
A.241048
B.8312
C.286.6
D.63.3
The capillary rise of water is maximum for glass tube of size
A.10 mm
B.5 mm
C.3 mm
D.1 mm
The problems of fluid statics are influenced by
A.frictional and surface tension forces
B.gravity and surface tension forces
C.gravity and pressure forces
D.frictional and pressure forces
Mercury is generally used in manometer for measuring
A.very low pressures only
B.low pressures accurately
C.large pressures only
D.all pressures except the small ones
The pressure within a soap bubble is
A.less than the external pressure
B.greater than the external pressure
C.equal to the external pressure
D.equal to the vapour pressure at the prevailing temperature.
A tube of length h which is wide enough to make surface tension effects negligible is closed at one end. It is then lowered into a tank of mercury of depth h and the mercury rises to a distance x into the tube. If the mercury barometer stands at h also then
A.(2h-x) (h-x) = h2
B.h(h-x) = h2
C.(2h-x) (h+x) = h2
D.2h(h-x) = h2
The capillary rise in water is on account of
A.adhesion being greater than cohesion
B.cohesion being greater than adhesion
C.adhesion being equal to cohesion
D.vapor pressure being small.
A 2.0 kg object weights 1.9 kgf on a spring balance. The value of g at this location. In m/s2 is
A.9.806
B.9.316
C.10.322
D.0.95
