Related Questions

An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.
A Less than twice
B More than twice
C Less than three times
D More than three times
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
A Running full
B Running free
C Partially running full
D Partially running free
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
The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.
A Equal to
B One-half
C Three fourth
D Double
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
A Less than
B More than
C Equal to
D None of these
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
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
Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
A Internal
B External
C Both A and B
D None of these
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
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.
A Less than
B More than
C Equal to
D None of these

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