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Civil Engineering Mcqs

The fluid forces considered in the Navier Stokes equation are__________________?

October 14, 2019 – by Atif 0

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

For pipes, laminar flow occurs when Roynolds number is__________________?

October 14, 2019 – by Zoaib 0

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__________________?

October 14, 2019 – by Abdur Rehman 0

A. maximum
B. minimum
C. zero
D. non-zero finite
E. unpredictable

Buoyant force is___________________?

October 14, 2019 – by Hassan Bilal 0

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 ?

October 14, 2019 – by Abdur Rehman 0

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_______________?

October 14, 2019 – by Atif 0

A. steady flow
B. unsteady flow
C. laminar flow
D. uniform flow
E. critical flow

For hypersonic flow, the Mach number is___________________?

October 14, 2019 – by Junaid 0

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_______________?

October 14, 2019 – by Abdur Rehman 0

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________________?

October 14, 2019 – by Junaid 0

A. adhesion
B. cohesion
C. viscosity
D. compressibility
E. surface tension

Poise is the unit of________________?

October 14, 2019 – by Abdul wakeel 0

A. surface tension
B. capillarity
C. viscosity
D. shear stress in fluids
E. buoyancy

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