🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs471
The fluid forces considered in the Navier Stokes equation are__________________?
Agravity, pressure and viscous
Bgravity, pressure and turbulent
Cpressure, viscous and turbulent
Dgravity, viscous and turbulent E. none of the above
472
All the terms of energy in Bernoulli’s equation have dimension of_______________?
Aenergy
Bwork
Cmass
Dlength E. time
473
Two dimensional flow occurs when___________________?
Athe direction and magnitude of the velocity at all points are identical
Bthe velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
Cthe magnitude and direction of the velocity do not change from point to point in the fluid
Dthe fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane E. velocity, depth, pressure, etc. change from point to point in the fluid flow
474
For hypersonic flow, the Mach number is___________________?
Aunity
Bgreater than unity
Cgreater than 2
Dgreater than 4 E. greater than 10
475
Normal depth in open channel flow is the depth of flow corresponding to_______________?
Asteady flow
Bunsteady flow
Claminar flow
Duniform flow E. critical flow
476
Pitot tube is used for measurement of__________________?
Apressure
Bflow
Cvelocity
Ddsscharge E. viscosity
477
Choose the wrong statement________________?
AViscosity of a fluid is that property which determines the amount of its resistance to a shearing force
BViscosity is due primarily to interaction between fluid molecules
CViscosity of liquids decreases with in-crease in temperature
DViscosity of liquids is appreciably affected by change in pressure E. Viscosity is expressed as poise, stoke, or saybolt seconds
478
Choose the wrong statement?
Afluids are capable of flowing
Bfluids conform to the shape of the con-taining vessels
Cwhen in equilibrium, fluids cannot sustain tangential forces
Dwhen in equilibrium, fluids can sustain shear forces E. fluids have some degree of compressibility and offer little resistance to form
479
Select the correct statement ?
ALocal atmospheric pressure depends upon elevation of locality only
BStandard atmospheric pressure is the mean local atmospheric pressure a* sea level
CLocal atmospheric pressure is always below standard atmospheric pressure
DA barometer reads the difference be-tween local and standard atmospheric pressure E. Gauge piessure is equal to atmospheric pressure plus instrument reading