311. A nozzle placed at the end of a water pipe line discharges water at a
low pressure
high pressure
low velocity
high velocity
✅ The correct answer is option D.
Hydraulics and Fluid Mechanics MCQs
313. Bulk modulus of a fluid __________ as the pressure increases.
remains same
decreases
increases
✅ The correct answer is option C.
314. The ratio of the inertia force to the surface tension force is called Weber’s number.
Correct
Incorrect
✅ The correct answer is option A.
317. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
Correct
Incorrect
✅ The correct answer is option A.
318. The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
wH/2
wH
wH2/2
wH2/4
✅ The correct answer is option C.
319. When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
less than
more than
✅ The correct answer is option A.
320. When the Mach number is less than unity, the flow is called
sub-sonic flow
sonic flow
super-sonic flow
hyper-sonic flow
✅ The correct answer is option A.