Related Questions

With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost
A Increases
B Decreases
C Remains unchanged
D Increases exponentially
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.
A Equal to
B One-fourth
C One-third
D One-half
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a
A Notch
B Weir
C Mouthpiece
D Nozzle
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is
A slightly less
B slightly more
C nearly half
D equal
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 $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).
A H
B 12.6 H
C 13.6 H
D 14.6 H
Water flows into an empty 64-gallon drum through pipe A and flows out through pipe B. If the rate of flow through A is 2 gallons/hour, how many gallons per hour must flow out through pipe B so that the drum is full in exactly 96 hours?
A 3/8
B 1/2
C 2/3
D 4/3
The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by
A $${{\text{C}}_{\text{v}}} \cdot \sqrt {2{\text{gH}}} $$
B $${{\text{C}}_{\text{c}}} \cdot \sqrt {2{\text{gH}}} $$
C $${{\text{C}}_{\text{d}}} \cdot \sqrt {2{\text{gH}}} $$
D $${{\text{C}}_{\text{v}}} \cdot {{\text{V}}_{\text{a}}}$$
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss
A Decreases
B Increases
C Remains constant
D Increases linearly
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called
A Free expansion
B Hyperbolic expansion
C Adiabatic expansion
D Parabolic expansion

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