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.Management Sciences
Category: Fluid Mechanics for Chemical
Poise is converted into stoke by ___________________?
A. Multiplying with density (gm/c.c)
B. Dividing by density (gm/c.c)
C. Multiplying with specific gravity
D. Dividing by specific gravity
Boundary layer exists in flow_________________?
A. Of real fluids
B. Over flat surfaces only
C. In pipes only
D. Of ideal fluids only
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump_________________?
A. Develops a lower head
B. Capacity is reduced
C. Requires more power
D. All A., B. and C.
Laminar flow of a Newtonian fluid ceases to exist, when the Reynolds number exceeds___________________?
A. 4000
B. 2100
C. 1500
D. 3000
In power law, δ = [A (du/dy)2 + B] then the fluid is__________________?
A. Newtonian
B. Dilatant
C. Thixotropic
D. Rheopectic
In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?
A. Constant along a streamline
B. Not constant along a streamline
C. Increased in the direction of flow
D. None of these
In fluid flow, the boundary layer separation cannot occur___________________?
A. In case of boundaries experiencing form drag
B. At points of abrupt changes in the flow directions
C. In laminar flow
D. None of these
Power loss in an orificemeter is _____________ that in a Venturimeter?
A. Less than
B. Same as
C. More than
D. Data insufficient, cannot be predicted
A Venturimeter measures the___________________?
A. Velocity head
B. Pressure
C. Point velocity
D. None of these
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