Physics
Fluid Dynamics
Page 10 of 12
#73 The speed of efflux of a liquid from a tank is given by
A) \(v=2gh\)
B) \(v=gh\)
C) \(v=2gh\)
D) \(v=\frac{1}{2} \sqrt{2gh}\)
#74 The velocity of fluid at the narrow constriction of a venturimeter
A) Increases
B) Decreases
C) Remains same
D) Becomes zero
#75 The pressure of fluid at the narrow constriction of a venturimeter
A) Increases
B) Decreases
C) Remains same
D) Becomes zero
#76 The product of cross-sectional area and fluid speed at any point along the pipe
A) Is constant
B) Is variable
C) Increases
D) Decreases
#77 The blood pressure is measured in
A) Pa
B) mm of Hg
C) atm
D) torr
#78 The normal blood pressure is
A) 120/80 mm of Hg
B) 140/100 mm of Hg
C) 100/60 mm of Hg
D) 80/120 mm of Hg
#79 The instrument used to measure the rate of flow of fluid is
A) Venturimeter
B) Manometer
C) Barometer
D) Hygrometer
#80 The lift on an aircraft wing is due to
A) Higher speed and lower pressure on the upper surface
B) Lower speed and higher pressure on the upper surface
C) Higher speed and higher pressure on the upper surface
D) Lower speed and lower pressure on the upper surface
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