211. When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.
concave
convex
✅ The correct answer is option A.
Hydraulics and Fluid Mechanics MCQs
212. Select the correct statement
Weber’s number is the ratio of inertia force to elastic force.
Weber’s number is the ratio of gravity force to surface tension force.
Weber’s number is the ratio of viscous force to pressure force.
Weber’s number is the
✅ The correct answer is option D.
213. A pitot tube is used to measure the
velocity of flow at the required point in a pipe
pressure difference between two points in a pipe
total pressure of liquid flowing in a pipe
discharge through a pi
✅ The correct answer is option A.
214. A flow is called hyper-sonic, if the Mach number is
less than unity
unity
between 1 and 6
none of these
✅ The correct answer is option D.
215. The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)
Q = Cd x bH1 2gh
Q = Cd x bH2 2gh
Q = Cd x b ( H2 – H1 ) 2gh
Q = Cd x bH 2gh
✅ The correct answer is option C.
216. The shear stress-strain graph for a non-newtonian fluid is a curve.
Correct
Incorrect
✅ The correct answer is option A.
218. When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
TRUE
FALSE
✅ The correct answer is option A.
219. A venturiflume is used to measure
pressure of liquid
discharge of liquid
pressure difference between two points in a channel
pressure difference be
✅ The correct answer is option B.
220. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.
Agree
Disagree
✅ The correct answer is option A.