42301. The differential equation dp/ρ + gdz + vdv = 0 for a fluid motion is suggested by
42302. An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be
42303. For uniform flow in canals
42304. If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is
42305. Fourie’s law of heat conduction is valid for:
42306. In flowing liquids pitot tubes are used measure
42307. Capillary rise of water is
42308. A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water
42309. The dimensional formula of force is
42310. An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to
42311. Orifice-meter is used to measure
42312. Absorptivity of a body will be equal to its emissivity:
42313. For an irrotational flow, the equation is given by
42314. Water belongs to
42315. Hydraulic radius is equal to
42316. The discharg formula Q = Cd 2gH x A is used for rectangular
42317. Chezy's constant is suggested by
42318. The acceleration f required to accelerate a rectangular tank containing water horizontally so that the slope of its free surface is 45°, is
42319. In free convection heat transfer,Nusselt number is a function of:
42320. For solving network problems of pipes, necessary condition is
42321. In a fluid flow a particle may posses
42322. In two dimensional flow the components of velocity are given by u = ax; v = by. The stream lines will be
42323. The vapour compression refrigerator employs the following cycle
42324. For a most economical rectangular channel, the hydraulic mean depth, is equal to
42325. The instrument used for measuring the velocity of flow, is known as
42326. For a long pipe, the head loss
42327. On a flow net diagram, the distance between two consecutive steam lines at two successive sections are 1 cm and 0.5 cm respectively. If the velocity at the first section is 1 m/sec, the velocity at the second is
42328. The flow is called rotational if its velocity normal to the plane of area is equal to
42329. Flow of water in pipes of diameter more than 3 metres, can be measured by
42330. Hydraulic grade line
42331. If the Mach number for a fluid flow is less than 1, the flow is
42332. Hydraulic coefficient of an orifice means the coefficient of
42333. The minimum specific energy of flow of water in open channel is : (where hc is the critical depth)
42334. In a venturimeter, the divergent cone is kept
42335. Specific weight of sea water is more than that of pure water because of
42336. Total pressure on the top of a closed cylindrical vessesl completely filled with liquid, is directly proportional to
42337. Energy equation is usually applicable to
42338. Poise is the unit of
42339. For mountaneous regions having steep slope, wagons for carrying liquid are made with bottom
42340. The upper surface of the weir over which water flows, is known as
42341. The ratio of the inertia and viscous forces acting in any flow, ignoring other forces, is called
42342. Discharge with velocity of approach, over a rectangular weir is
42343. To avoid the tendency of separation of liquid flow, the most suitable ratio of the diameters of the throat and the pipe, is
42344. A pitot tube is used to measure
42345. The thickness of a sharp crested weir is kept less than
42346. The property of steam function ψ is :
42347. The maximum vacuum created at the summit of a syphon is
42348. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is
42349. Critical temperature is the temperature above which
42350. In vapour compressioncyclethe condition of refrigeration is dry saturated vapour.
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