19251. Fanning equation is given by. It is applicable to __________ region flow.
19252. With a constant diameter impeller of a centrifugal pump
19253. For water, when the pressure increases, the viscosity
19254. Droplets of water take spherical shape due to?
19255. Location of vena-contracta in an orificemeter does not depend upon the
19256. At low Reynolds number
19257. For laminar flow through a closed conduit
19258. 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.
19259. Unsteady uniform flow is represented by flow through a/an
19260. If Blausius or Darcey friction factor is 'f1' then the Fanning friction factor is equal to
19261. Pick out the wrong statement pertaining to fluid flow.
19262. 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
19263. While starting a centrifugal pump, its delivery valve should be kept
19264. 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
19265. Velocity at a certain point in case of streamline flow is
19266. Sewage sludge is an example of the __________ fluid.
19267. In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.
19268. Multistage centrifugal pumps are generally used for
19269. The fluid jet discharging from a 2" diameter orifice has a diameter of 1.75" at its vena-contracta. The co-efficient of contraction is
19270. A bed consists of particles of density 2000 kg/m3. If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is
19271. Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation ?
19272. For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary
19273. Capillary tube method of viscosity measurement is based on the
19274. It is possible to integrate an automatic flow controller to a
19275. For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is
19276. For a reciprocating pump, the indicator diagram is the graph between the
19277. The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the
19278. High specific speed of a pump implies that, it is a/an __________ pump.
19279. A gas (density = 1.5 kg/m3 , viscosity = 2x 10-5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5kg/m3and viscosity of 3 x 10-5kg/m.s flowing at 3 m/s will be
19280. One poise (unit of absolute/dynamic viscosity) is equivalent to one
19281. The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/f )-0.4, is called the __________ equation.
19282. When you quickly press and release the left mouse button twice, you are?
19283. What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?
19284. For an unstable equilibrium of a floating body (where, M = metacentre.)
19285. Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
19286. A pipe is defined as 'hydraulically smooth', if the friction factor
19287. A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is
19288. Delivery of insufficient quantity of liquid by a pump may be caused by
19289. Fluid resistance to shear depends upon its
19290. In case of a __________ the energy of flow is considerably decreased downstream of the machine.
19291. With increase in the shear rate, the apparent viscosity of pseudoplastic fluids
19292. Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about
19293. Purpose of hydraulic accumulator is to
19294. He stopped -----------the shop on the way home
19295. Purpose of relief valve in a reciprocating pump is to
19296. Select the correct statement.
19297. The term ‘Dribble’ is associated with which game?
19298. In case of turbulent flow of fluid through a circular pipe, the
19299. For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is