. A special type of liquid transporting device is the diffuser pump, in which __________ are minimised. (A) Bearing losses (B) Disk friction (C) Shock losses (D) Cavitation

. A special type of liquid transporting device is the diffuser pump, in
which __________ are minimised.
(A) Bearing losses
(B) Disk friction
(C) Shock losses
(D) Cavitation
by

1 Answer

Answer :

(C) Shock losses
by

Related questions

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Cavitation occurs in a centrifugal pump when the suction pressure is (A) Less than the vapour pressure of the liquid at that temperature (B) Greater than the vapour pressure of the liquid at that temperature (C) Equal to the vapour pressure (D) Equal to the developed head

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What causes cavitation in centrifugal pump? (A) High suction pressure (B) Low barometric pressure(C) Low suction pressure(D) High suction velocity

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Cavitation can be prevented by (A) Suitably designing the pump (B) Maintaining the suction head sufficiently greater than the vapour pressure (C) Maintaining suction head = developed head (D) Maintaining suction head lower than the vapour pressure

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Cavitation in a centrifugal pump can be avoided by keeping the (A) Inlet pressure high (B) Outlet pressure low (C) Inlet pressure low (D) Outlet pressure high

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Function of air vessel provided in a reciprocating pump is to (A) Reduce discharge fluctuation (B) Reduce the danger of cavitation (C) Avoid the necessity of priming (D) Increase the pump efficiency

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Pick out the wrong statement: (A) Greater is the kinematic viscosity of the liquid, greater is the thickness of the boundary layer (B) Blowers develop a maximum pressure of 2 atmospheres (C) Friction losses in pipe fittings are generally expressed in terms of velocity heads (D) Fanning friction factor in case of turbulent flow of liquids in pipe depends upon relative roughness & Reynolds number

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How Cavitation Can Be Eliminated In A Pump?

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__________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2 . (A) Centrifugal (B) Piston (C) Plunger (D) Vane

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In case of Venturimeter, friction losses are about __________ percent of maximum velocity head. (A) 2 (B) 8 (C) 12 (D) 20

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Variation in the drop size of seed can be minimised by (a) Using a short, smooth, small diameter tube with the discharge end close to bottom of furrow. (b) Discharging the seed directly from the metering device within a few centimetres of the furrow bottom. (c) Mechanically transferring the seeds from the metering unit in the furrow. (d) All of the above.

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The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as (A) Evaporation (B) Cavitation (C) Sublimation (D) Stripping

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In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes (A) Less than atmospheric pressure (B) More than liquid vapor pressure (C) Less than liquid vapor pressure (D) More than atmospheric pressure

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The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is (A) Pipe vibrations (B) Cavitation (C) Boundary layer separation (D) Fluctuation in liquid flow

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Friction produced by the formation of wakes is called the __________ friction. (A) Disk (B) Skin (C) Form (D) None of these

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tractor us used for major operation such as ploughing, harrowing, sowing, harvesting and transporting work. A. Row crop Tractor C. Special purpose tractor B. Crawler tractor D. General purpose tractor

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Who can teach me how to find the Volume number and Issue number of “Numerical simulation of three dimensional cavitation shedding dynamics with special emphasis on cavitation–vortex interaction”?

Description : Who can teach me how to find the Volume number and Issue number of “Numerical simulation of three dimensional cavitation shedding dynamics with special emphasis on cavitation–vortex interaction”?

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Cavitation will begin when (A) The pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid (B) Pressure becomes more than critical pressure (C) Flow is increased (D) Pressure is increased

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The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving

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Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation (A) Pressure falls below the vapour pressure (B) Pressure becomes very high (C) Temperature becomes low (D) All 'a', 'b' & 'c'

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In which type of shock does the patient experiences a mismatch of blood flow to the cells? a) Distributive Distributive or vasogenic shock results from displacement of blood volume, creating a relative hypovolemia. b) Cardiogenic Cardiogenic shock results from the failure of a heart as a pump. c) Hypovolemic In hypovolemic shock, there is a decrease in the intravascular volume. d) Septic In septic shock, overwhelming infection results in a relative hypovolemia.

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The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump. (A) Electromagnetic (B) Reciprocating (C) Centrifugal (D) Volute

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In a moderately sized packed absorption tower, channelling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter (A) > 4 :1 (B) < 8 : 1 (C) > 8:1 (D) < 6:1

Description : In a moderately sized packed absorption tower, channelling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter (A) > 4 :1 (B) < 8 : 1 (C) > 8:1 (D) < 6:1

Last Answer : (C) > 8:1

A bearing metal should not have (A) Enough plasticity (B) Low thermal conductivity (C) Low co-efficient of friction (D) High toughness

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All of the following may be useful in the treatment of cardiogenic shock except: A. Dobutamine. B. Sodium nitroprusside. C. Pneumatic antishock garment. D. Intra-aortic balloon pump.

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the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as (A) 0.10 m (B) 0.20 m (C) 0.5 m (D) 1.0 m

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A cable carrying alternating current has (a) hysteresis losses only (b) hysteresis and leakage losses only (c) hysteresis, leakage and copper losses only (d) hysteresis, leakage, copper and friction losses

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The armature of a dc machine is laminated to reduce: (A) Eddy current loss (B) Hysteresis loss (C) copper losses (D) friction and windage losses

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The friction losses in Real Transformers are :

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Last Answer : A

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Is it safe to use spit balls (jelly balls) in my water pipe as a diffuser?

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