Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?
A. 5%
B. 10%
C. 15%
D. 20%
Fluid Mechanics
The pressure at the summit of a syphon is_______________?
The pressure at the summit of a syphon is_______________?
A. equal to atmospheric
B. less than atmospheric
C. more than atmospheric
D. none of the above
Coefficient of velocity for Borda’s mouth piece running full is________________?
Coefficient of velocity for Borda’s mouth piece running full is________________?
A. 0.611
B. 0.707
C. 0.855
D. 1.00
The major loss of energy in long pipes is due to_______________?
The major loss of energy in long pipes is due to_______________?
A. sudden enlargement
B. sudden contraction
C. gradual contraction or enlargement
D. friction
Which of the following has highest coefficient of discharge ?
Which of the following has highest coefficient of discharge ?
A. sharp edged orifice
B. venturimeter
C. Borda’s mouthpiece running full
D. CipoUetti weir
The discharge over a broad crested weir is maximum when the depth of flow is_______________?
The discharge over a broad crested weir is maximum when the depth of flow is_______________?
A. H/3
B. H/2
C. 2 H/5
D. 2 H/3
where H is the available head
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be_________________?
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be_________________?
A. 300
B. 337.5
C. 600
D. 675
If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as________________?
If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as________________?
A. x
B. x
C. x
D. x/7
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be_________________?
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be_________________?
A. 0.423 D
B. 0.577 D
C. 0.223 D
D. 0.707 D
where D is the depth of flow
In case of an airfoil, the separation of flow occurs________________?
In case of an airfoil, the separation of flow occurs________________?
A. at the extreme rear of body
B. at the extreme front of body
C. midway between rear and front of body
D. any where between rear and front of body depending upon Reynolds number