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SSC JE ME 2017- Fluid Mechanics Rankers Quiz 6
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Question 1
Which combination of the following statements is correct?
The incorporation of reheater in a steam power plant: P: always increases the thermal efficiency of the plant. Q: always increases the dryness fraction of steam at condenser inlet. R: always increases the mean temperature of heat addition. S: always increases the specific work output.
The incorporation of reheater in a steam power plant: P: always increases the thermal efficiency of the plant. Q: always increases the dryness fraction of steam at condenser inlet. R: always increases the mean temperature of heat addition. S: always increases the specific work output.
Question 2
For the inverted manometer as shown, all fluids are at 20 °C. If PB-PA=97 Kpa What must be the height H? 
Question 3
A centrifugal pump was used for to supply water at very high level, for which multi-staging of pump was done. which of the following is advantage of multi staging
Question 4
Considering standard fluid as mercury and water as normal fluid then the ratio of the density of water to the density of mercury is equal to
a.Relative density
b.Specific gravity
Question 5
The Newtonian fluid has the following velocity fields: 
. The rate of shear deformation at εyz the point X=–3, Y=–2 and Z=3 for the given flow is ___________.
Question 6
For fully developed flow of water in a pipe having diameter 0.1 m, velocity 10 cm/s and Kinematic viscosity 10–5 m2/s, the value of Darcy friction factor is
Question 7
For air flow over a flat plate, velocity (U) and boundary layer thickness (δ) can be expressed respectively, as
If the free stream velocity is 2m/s, and air has kinematic viscosity of 1.5×10-5 m2/s and density of 1.23 kg/m3, the wall shear stress at x = 1m, is
If the free stream velocity is 2m/s, and air has kinematic viscosity of 1.5×10-5 m2/s and density of 1.23 kg/m3, the wall shear stress at x = 1m, is
Question 8
The general equation of continuity for three-dimensional flow of a incompressible fluid for steady flow is
Question 9
A centrifugal pump with peripheral speed ‘V ’ was selected for a total lift of 100 m. Actually pump was to be operated for a total lift of 400 m. The peripheral speed should actually be (other conditions remaining same)
Question 10
A stream function is given by ψ = 4x - 3y The resultant velocity at any point is
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Oct 16ESE & GATE ME
