Which of the following has highest coefficient of discharge ?

Related Mcqs:

1. 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

2. Which of the following is used to measure the discharge ?

   A. current meter
   B. venturimeter
   C. pitot tube
   D. hotwire anemometer

3. The discharge through a V- notch varies as______________?

   A. H1/2
   B. H3’2
   C. H5/2
   D. H5’4 where H is head

4. In a Sutro weir, the discharge is proportional to________________?

   A. H1/2
   B. H3/2
   C. H5/2
   D. H

   where H is head

5. The discharge of a liquid of kinematic viscosity 4 cm2/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is__________________?

   A. laminar flow
   B. transition flow
   C. turbulent flow
   D. not predictable from the given data

6. 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

7. Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?

   A. 5%
   B. 10%
   C. 15%
   D. 20%

8. 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

9. Coefficient of contraction for an external cylindrical mouthpiece is_________________?

   A. 1.00
   B. 0.855
   C. 0.7H
   D. 0.611

10. Coefficient of velocity for Borda’s mouth piece running full is________________?

    A. 0.611
    B. 0.707
    C. 0.855
    D. 1.00