A. Atmospheric pressure
B. Sub-atmospheric pressure
C. Pressure difference between two points
D. None of these
Correct Answer: Pressure difference between two points ✔
Last Updated: March 10, 2019
Related MCQs
- The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost is P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet ?
- Velocity distribution for flow between two fixed parallel plates__________?
- Upto what value of ‘Mach number’, a fluid may be considered as incompressible ?
- Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?
- Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the __________?
- The equivalent diameter for flow through a rectangular duct of width B and height H is__________?
- A Rotameter works on the principle of __________ pressure drop?
- The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to__________?
- The hydrodynamic and thermal boundary layers will merge, when __________?
- The velocity profile exhibited by laminar flow of Newtonian 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?
- A centrifugal pump is called a turbine pump, if it is having a__________?
- In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature?
- A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms?
- Power required for mixing Newtonian fluids is a function of the __________?
- Which of the following properties of a fluid is responsible for offering resistance to shear ?
- Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of __________ flow type?
- The Mach number for hypersonic flow of compressible fluid is__________?
- Priming is needed in a __________ pump?
- The head developed by a centrifugal pump is largely determined by the__________?
- Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is__________?
- A stream tube is that, which has __________ cross-section entirely bounded by stream lines?
- A fluid element has a velocity V = -y2. xi + 2yx2 . j. The motion at (x, y) = (1/√2, 1) is__________?
- Centrifugal compressors compared to reciprocating compressors__________?
- The ratio of inertial forces to elastic forces is called the __________ number?
- The fluid property, due to which, mercury does not wet the glass is__________?
- The head loss in turbulent flow in a pipe varies__________?
- Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about__________?
- The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the__________?
- Rise of liquid in a capillary tube is due to__________?
- The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head?
- For very low pressure and high discharge rate, the compressor used is a/an __________ compressor?
- A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 × 103 VOM + 10.94 × 106 V2 OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is__________?
- Non-colloidal solution is an example of the __________ fluid?
- One dimensional flow implies__________?
- Out of the following flow measuring devices, which one incurs the maximum installation cost as well as pressure loss ?
- __________ forces do not act in case of fluid flow ?
- With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss__________?
- Fanning friction factor is equal to (where, fB = Blasius friction factor) ?
- What is the speed of sound (m/sec) in ordinary water ?
- Which of the following is not an advantage of fluidisation from transfer operation point of view ?
- While starting an axial flow pump, its delivery valve should be kept __________?
- The line traced by a single fluid particle as it moves over a period of time is called __________ line?
- Pumping of a corrosive liquid is generally preferred to be done by a __________ pump, as it can be made of a variety of materials including plastics?
- For laminar flow of Newtonian fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to (where, μ = fluid viscosity ) ?
- For the same flow rate of a fluid, the pressure drop is the least for __________?
- Discharge from a 24 inch pipe of water at 10 ft/sec will be __________ ft3/sec?
- Rubber latex is an example of __________ fluid?
- Diaphragm pumps are used to transport__________?
- The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length?
- With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity__________?
- Differential manometer measures the__________?