at
above
below
✅ The correct answer is option C.
Hydraulics and Fluid Mechanics MCQs
In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water.
Correct
Incorrect
✅ The correct answer is option A.
The total head of a liquid particle in motion is equal to
pressure head + kinetic head + potential head
pressure head – (kinetic head + potential head)
potential head – (pressure head + kinetic head)
kinetic head – (pressu
✅ The correct answer is option A.
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.
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.
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.
The unit of surface tension is
N/m
N/m2
N/m3
N-m
✅ The correct answer is option A.
The shear stress-strain graph for a non-newtonian fluid is a curve.
Correct
Incorrect
✅ The correct answer is option A.
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.
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.