226. Experimental study of laminar fluid flow through a circular tube was conducted by
227. The most economical flow control valve for use with large diameter pipes is a
228. Each term in Bernaulli's equation represents the __________ of the fluid.
229. Which of the following is a dimensionless parameter ?
230. If the head over the triangular notch is doubled, the discharge will increase by __________ times.
231. Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
232. Alberuni came to India with?
233. For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
234. Interstage coolers are provided in a multistage compressor to
235. Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.
236. Reynolds number is the ratio of
237. For the manometer set up shown in the figure, the pressure difference PA - PB is given by
238. The discharge through a venturimeter depends upon
239. N. second/m2 is
240. The distance between metacentre and __________ is called metacentric height.
241. Check valve is used for __________ flow.
242. Capacity of a rotary gear pump can be varied by
243. For a given Reynolds number, in a hydraulically smooth pipe, further smoothening __________ the friction factor.
244. Power number is the ratio of
245. The momentum correction factor for the velocity distribution of laminar flow is
246. For the same flow rate of a fluid, the pressure drop is the least for
247. The valve commonly used in pipes larger than 2" dia is a
248. Foot valves are provided in the suction line of a centrifugal pump to
249. In area meter (e.g., rotameter), with increase in the fluid flow rate, the