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Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg ?
Related MCQs
Bernoulli‟s equation does not apply to the functioning of a/an__________?
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A differential pressure cell is used for__________?
If ‘x’ is the depth of flow in an open channel of large width, then the hydraulic radius is equal to__________?
Boundary layer separation is caused by the__________?
A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double__________?
Check valves are used__________?
The temperature in isentropic flow__________?
Pipes having diameter 14 inches or more are designated by their__________?
Speed of sound in an ideal gas depends on its__________?
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Turbulent flow generally occurs for cases involving__________?
In an incompressible fluid, the density is__________?
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Check in a centrifugal pump is__________?
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A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be__________?
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Pick out the Hagen-Poiseuille‟s equation ?
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Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena-contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity)?
A fluid whose apparent viscosity increases with shear rate is termed as the __________ fluid?
In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency?
Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an __________ manometer?
The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow?
The rate of shear versus the shear stress curves are time dependent for __________ fluid?
The centre of pressure is__________?
As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 ?
The resistance wire used in a hot wire anemometer for conducting electrical current is made of__________?
The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke’s law range is proportional to the__________?
The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a__________?
The bulk modulus of elasticity of a liquid__________?
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?
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)?
An ideal nozzle design aims at__________?
One horsepower is equal to__________?
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?
With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost__________?
Acceleration head in a reciprocating pump__________?
In case of a __________ the energy of flow is considerably decreased downstream of the machine?
The normal stress is the same in all directions at a point in a fluid, when the fluid is__________?
A pipe is defined as ‘hydraulically smooth’, if the friction factor__________?
Dean number is concerned with the__________?
The maximum delivery pressure of compressors can be upto __________ atmospheres?
In case of centrifugal fan or blower, the gas capacity varies as __________?
The dimension of dynamic viscosity is__________?
Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
Foot valves provided in pumps are __________ valves?
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg ?
A. 1
B. 0.1
C. 0.01
D. 0.001
Correct Answer:
1
✔
Last Updated:
March 10, 2019