A. 1.00
B. 0.855
C. 0.7H
D. 0.611
Related Mcqs:
- 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 - Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?
A. 5%
B. 10%
C. 15%
D. 20% - Coefficient of velocity of venturimeter_________________?
A. is independent of Reynolds number
B. decreases with higher Reynolds number
C. is equal to the coefficient of discharge of venturimeter
D. none of the above - 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 - If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is________________?
A. less than 1
B. between 1 and 100
C. 160
D. 200 - For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is_______________?
A. constant
B. dependent only on Reynolds number
C. a function of Reynolds number and relative roughness
D. dependent on relative roughness only - Which of the following has highest coefficient of discharge ?
A. sharp edged orifice
B. venturimeter
C. Borda’s mouthpiece running full
D. CipoUetti weir - Coefficient of velocity for Borda’s mouth piece running full is________________?
A. 0.611
B. 0.707
C. 0.855
D. 1.00 - The hydraulic grade line is_________________?
A. always above the centre line of pipe
B. never above the energy grade line
C. always sloping downward in the direction of flow
D. all of the above - The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is_________________?
A. d > m > e
B. d > e > m
C. e > m > d
D. e > d > m
