Related Questions

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
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
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
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 theoretical value of coefficient of contraction of a sharp edged orifice is
A 0.611
B 0.85
C 0.98
D 1.00
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 $${{\text{C}}_{\text{v}}} \cdot {{\text{V}}_{\text{a}}}$$
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in
A Air
B Oxygen
C Either A or B
D Either A or C without gain or loss of heat
The coefficient of discharge (Cd) of an orifice varies with ------- number.
A Mach
B Weber
C Froude
D Reynolds
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
A Plus
B Minus
C Divide
D None of these
Actual lift of a pump is always less than the theoretical lift and is limited by the
A Specific gravity & temperature of the liquid
B Leakage & pressure decreasing at higher elevations
C Frictional resistance through pipes, fittings & passages
D All of the above

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