176. Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the
177. Bernoull's equation does not apply to the functioning of a/an
178. What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter 'D' & length 'L' incurring a pressure drop 'Δp' with average velocity 'Vavg'?
179. Pascal's law is valid, only when the fluid is
180. A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow rate of 0.001 m3/s? The Fanning friction factor, f is 0.0062.
181. The pressure head of a flow meter remains constant for
182. A venturimeter can not be used for the direct measurement of
183. A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double
184. Which of the following is used for very accurate measurement of flow of gas at low velocity ?
185. The rate of shear versus the shear stress curves are time dependent for __________ fluid.
186. In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is
187. A pressure of 10 m head of water is equivalent to __________ kN/m2.
188. A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be
189. The World Human Rights Day is celebrated on?
190. The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is
191. For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.
192. Maintenance cost of a __________ pump for a particular duty is the least.
193. Choking in case of pipe flow means that a
194. Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.
195. The nominal size of a hose pipe is specified by its
196. Transition from laminar flow to turbulent flow is aided by the
197. For flow of fluids through packed bed, the superficial velocity is
198. Cd is always __________ Cc.
199. Buoyant force
200. Which of the following is an undesirable property of a manometric liquid ?