301. Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an
302. The specific speed of a pump is defined as the speed of a unit of such a size, that it
303. In case of venturimeters, friction losses are about __________ percent of maximum velocity head.
304. With increase in the schedule number of a pipe of a particular nominal size, the
305. Turbine impeller
306. Friction produced by the formation of wakes is called the __________ friction.
307. Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)
308. When the pipe Reynold's number is 6000, the flow is generally
309. Fanning equation is given by. It is applicable to __________ region flow.
310. With a constant diameter impeller of a centrifugal pump
311. For water, when the pressure increases, the viscosity
312. Droplets of water take spherical shape due to?
313. Location of vena-contracta in an orificemeter does not depend upon the
314. At low Reynolds number
315. For laminar flow through a closed conduit
316. In Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter.
317. Unsteady uniform flow is represented by flow through a/an
318. If Blausius or Darcey friction factor is 'f1' then the Fanning friction factor is equal to
319. Pick out the wrong statement pertaining to fluid flow.
320. A Newtonion liquid (ρ = density, μ = viscosity) is flowing with velocity v in a tube of diameter 'D'. Let Δp be the pressure drop across the length 'L'. For a laminar flow, Δp is proportional to
321. While starting a centrifugal pump, its delivery valve should be kept
322. For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to
323. Velocity at a certain point in case of streamline flow is
324. Sewage sludge is an example of the __________ fluid.
325. In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.