The fluid forces considered in the Navier Stokes equation are__________________?
A. gravity, pressure and viscous
B. gravity, pressure and turbulent
C. pressure, viscous and turbulent
D. gravity, viscous and turbulent
E. none of the above…
Civil Engineering Mcqs
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…
In a forced vortex, the velocity of flow everywhere within the fluid is__________________?
A. maximum
B. minimum
C. zero
D. non-zero finite
E. unpredictable…
Buoyant force is___________________?
A. resultant force acting on a floating body
B. equal to the volume of liquid displaced
C. force necessary to keep a body in equilibrium
D. the resultant force on a body due to the fluid surrounding it
E. none of the above…
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?
A. 900 minutes
B. 4 minutes
C. 4 x (225)3/2 minutes
D. 4 (225)1/3 minutes
E. 4 x V225 minutes…
Normal depth in open channel flow is the depth of flow corresponding to_______________?
A. steady flow
B. unsteady flow
C. laminar flow
D. uniform flow
E. critical flow…
For hypersonic flow, the Mach number is___________________?
A. unity
B. greater than unity
C. greater than 2
D. greater than 4
E. greater than 10…
All the terms of energy in Bernoulli’s equation have dimension of_______________?
A. energy
B. work
C. mass
D. length
E. time…
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called________________?
A. adhesion
B. cohesion
C. viscosity
D. compressibility
E. surface tension…
Poise is the unit of________________?
A. surface tension
B. capillarity
C. viscosity
D. shear stress in fluids
E. buoyancy…
Barometer 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. rain level…