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The Mach number for hypersonic flow of compressible fluid is____________________?
Related MCQs
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__________?
__________ pumps are a group of vacuum pumps ?
The momentum correction factor for the velocity distribution of laminar flow is__________?
The frictional resistance in laminar flow does not depend on the__________?
Steady non-uniform flow is exemplified by flow through a/an__________?
For an incompressible fluid, the bulk modulus of elasticity is__________?
Pressure drop in a packed bed for laminar flow is given by the __________ equation?
The line of action of the buoyant force acts through the__________?
Bernoulli’s equation accounts for the__________?
A Newtonian fluid is that__________?
A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the power consumed now will be __________ hp?
Power number is the ratio of__________?
A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg?
Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?
Propeller type centrifugal pumps are most suitable for__________?
Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter?
Froude number is the ratio of__________?
A stream line is__________?
The Mach number for hypersonic flow of compressible fluid is____________________?
A. 1
B. > 1
C. > 4
D. < 2
Correct Answer:
> 4
✔
Last Updated:
March 10, 2019