261. Which of the following can be used for the direct measurement of volumetric flow rate of slurry?
Venturimeter
Orificemeter
Rotameter
Pitot tube
✅ The correct answer is option C.
Fluid Mechanics MCQs
262. Slurries can be most conveniently pumped by a __________ pump.
Screw
Reciprocating
Gear
Centrifugal
✅ The correct answer is option D.
263. In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas)
1/√M
√M
1/M
M
✅ The correct answer is option A.
264. The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the
Static submergence
Net positive suction head (NPSH)
Cavitation sensitivity
Priming
✅ The correct answer is option B.
265. The dimension of kinematic viscosity is
ML⁻²T⁻¹
L²T⁻¹
ML⁻²T⁻²
None of these
✅ The correct answer is option B.
266. Potential flow is the flow of
Compressible fluids with shear
Compressible fluids with no shear
Incompressible fluids with shear
Incompressible fluids with no shear
✅ The correct answer is option D.
267. Which of the following is a Newtonian fluid?
Rubber latex
Sewage sludge
Quicksand
Non-colloidal solution
✅ The correct answer is option D.
268. The ratio of actual discharge to theoretical discharge through an orifice is equal to
Cc . Cv
Cc . Cd
Cv . Cd
Cd/Cv
✅ The correct answer is option A.
269. The lift of a ballon is
Increased, as it rises to a higher altitude
Due to the weight of the atmospheric air, that it displaces
Not dependent on the temperature of the atmosphere
None of these
✅ The correct answer is option B.
270. Priming of a centrifugal pump is done to
Increase the mass flow rate of fluid
Develop effective pressure rise by the pump
Avoid chances of separation inside the impeller
None of these
✅ The correct answer is option C.