chemical-engineering-fluid-mechanics Related Question Answers
201. Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively
202. Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the __________ head.
203. The speed of sound in an ideal gas varies as the
204. The maximum head that can be developed by a single impeller is __________ ft.
205. The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is
206. The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is
207. What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?
208. Foot valve provided in the pump is a __________ valve.
209. The discharge co-efficient for an orificemeter does not depend upon the
210. Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump?
211. An equipotential line is __________ to the velocity vector at every point.
212. Charge on electron was measured by?
213. Path followed by water jet issuing from the bottom of a water tank will be a
214. Which of the following produces maximum pressure difference for transportation of gases ?
215. For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be
216. Drag co-efficient in hindered settling is __________ that in free settling.
217. Efficiency of power transmission (η) through a circular pipe is given by (ht - hf)/ht, which has a maximum value of __________ percent.
218. One dimensional fluid flow implies the
219. __________ forces act on a particle moving through a stationary fluid.
220. In frictional fluid flow, the quantity, , is
221. Hydraulic radius is the ratio of
223. Power requirement of fans having constant wheel diameter varies __________ fan speed.
224. In the low Reynolds number region, the drag force on a sphere is proportional to
225. The continuity equation
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