85201. Which of the following pump is successfully used for lifting water to the turbines?
85202. Which of the following is not a reaction turbine?
85203. A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is __________ of the jet velocity
85204. The width of the bucket for a Pelton wheel is generally __________ the diameter of jet.
85205. For 450 m head of water, __________ shallbeused.
85206. The action of a centrifugal pump is that of a reversed reaction turbine.
85207. The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
85208. The speed ratio in case of Francis turbine varies from
85209. A Kaplan turbine is preferred for a specific speed of 300 to 1000 r.p.m.
85210. Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.
85211. The mechanical efficiency of an impulse turbine is
85212. The overshot water wheels are those in which the wheel runs entirely by the __________ of water.
85213. In a Kaplan turbine runner, the number of blades are generally between
85214. If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
85215. The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)
85216. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
85217. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)
85218. An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.
85219. Coefficient of contraction is the ratio of
85220. In a free nappe,
85221. The Reynold's number of a ship is __________ to its velocity and length.
85222. When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.
85223. According to equation of continuity,
85224. Coefficient of resistance is the ratio of
85225. Euler's equation in the differential form for the motion of liquids is given by
85226. In order to measure the flow with a venturimeter, it is installed in
85227. The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
85228. The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)
85229. The discharge through a siphon spillway is
85230. The maximum discharge over a broad crested weir is
85231. In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
85232. The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
85233. Which of the following is an example of laminar flow?
85234. The pressure less than atmospheric pressure is known as
85235. The total energy line lies over the hydraulic gradient line by an amount equal to the
85236. A structure whose width is __________ the width of the channel, is called a flumed structure.
85237. The maximum efficiency of transmission through a pipe is
85238. The coefficient of viscosity may be determined by
85239. The stability of a dam is checked for
85240. An ideal fluid is frictionless and incompressible.
85241. A manometer is used to measure
85242. The centre of gravity of the volume of the liquid displaced is called
85243. The coefficient of discharge for an external mouthpiece is
85244. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.
85245. A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
85246. The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.
85247. The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.
85248. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
85249. The pressure measured with the help of a piezometer tube is in
85250. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
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