33452. Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
33453. Steady flow occurs, when the
33454. With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost
33455. Which of the following two quantities when same, makes one pipe system equivalent to another pipe system ?
33456. The kinetic energy correction factor for velocity distribution of laminar flow is
33457. Priming of a centrifugal pump is done to
33458. Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is
33459. For pipes that must be broken at intervals for maintenance, the connector used should be a/an
33460. A fluid is the one, which
33461. One horsepower is equal to
33462. A fluidis moving at critical flow condition (NRe = 2100) through a pipe of dia 3 cms. Velocity of flow is __________ cm/sec.
33463. Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)
33464. The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be
33465. Fluid flow in a/an __________ is an example of pressure flow.
33466. In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, 'δ' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).
33467. A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is
33468. A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3 ) is to be fluidised by water (density 1000 kg/m3 ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is
33469. Absolute viscosity of a fluid is a function of the __________ of the fluid.
33470. Select the wrong statement pertaining to flow of an incompressible fluid through a venturimeter.
33471. Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will
33472. The bulk modulus of elasticity of a liquid
33473. Curve III in the above diagram represents a/an
33474. What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe)?
33475. The line traced by a single fluid particle as it moves over a period of time is called __________ line.
33476. The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head.
33477. A stream tube is that, which has __________ cross-section entirely bounded by stream lines.
33478. Colebrook equation for friction factor in turbulent flow is given by, . It reduces to Nikuradse equation for a value of equal to
33479. The unit of velocity head is
33480. Which of the following properties of a fluid is responsible for offering resistance to shear ?
33481. Erosion and pits formation on the impeller of a centrifugal pump may be due to
33482. The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.
33483. A rotameter works on the principle of __________ pressure drop.
33484. The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids
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