252. The buoyant force acting on a floating body is dependent on the
253. A Newtonion fluid is that
254. In case of end to end connection of two or more pipes in series, the __________ each pipe.
255. Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?
256. The flow of gas along a pipe in the direction of decreasing pressure causes decrease in its
257. Centrifugal pump can't be used to pump
258. A stream line is
259. Quicksand is an example of a __________ fluid.
260. Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.
261. Differential manometer measures the
262. The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.
263. Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the
264. Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)
265. Gradually varied flow in open channel is a/an __________ flow.
266. The line of action of the buoyant force acts through the
267. Cavitation in a centrifugal pump can be avoided by keeping the
268. Vane anemometer
269. The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.
270. Laminar flow is characterised by the nonexistence of
271. The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.
272. Select the correct practical example of steady non-uniform flow.
273. Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.
274. Terminal velocity is
275. Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement.