Civil Engineering MCQs

2965 MCQs  (Page 261 of 297)

Surface tension _____________________?
A. Acts in the plane of the interface normal to any line in the surface
B. Is also known as capillarity
C. Is a function of the curvature of the interface
D. Decreases with fall in temperature
Viscosity of water in comparison to mercury is ______________________?
A. Higher
B. Lower
C. Same
D. Higher/lower depending on temperature
The bulk modulus of elasticity __________________?
A. Has the dimensions of 1/pressure
B. Increases with pressure
C. Is large when fluid is more compressible
D. Is independent of pressure and viscosity
The specific weight of water is 1000 kg/m” _______________?
A. At norma] pressure of 760 mm
B. At 4°c temperature
C. At mean sea level
D. All the above
The normal stress in a fluid will be constant in all directions at a point only if_________________?
A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless