pressure
discharge
velocity
volume
✅ The correct answer is option B.
Hydraulics and Fluid Mechanics MCQs
A flow is called sonic, if the Mach number is unity.
Agree
Disagree
✅ The correct answer is option A.
When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero
Agree
Disagree
✅ The correct answer is option A.
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)
0.5 a2gH
0.707 a2gH
0.855 a2gH
a2gH
✅ The correct answer is option A.
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called
weir
notch
orifice
none of these
✅ The correct answer is option B.
Froude’s number is the ratio of inertia force to
pressure force
elastic force
gravity force
surface tension force
✅ The correct answer is option C.
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is
ρ ω2 r2
2ρ ω2 r2
✅ The correct answer is option C.
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)
✅ The correct answer is option D.
A nozzle is generally made of
cylindrical shape
convergent shape
divergent shape
convergent-divergent s
✅ The correct answer is option B.
The velocity of flow is same at all points in the cross-section of a channel.
TRUE
FALSE
✅ The correct answer is option B.