Lakshya Education MCQs

Question: The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
Options:
A.H
B.H2
C.H3/2
D.H1/2
Answer: Option B

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More Questions on This Topic :

Question 1. Fluid flow in a/an __________ is an example of pressure flow.
  1.    Partially filled pipeline
  2.    Pipe
  3.    Open channel
  4.    River
Answer: Option B
Question 2. __________ pumps are a group of vacuum pumps.
  1.    Hyter
  2.    Sump
  3.    Mono
  4.    Submerged
Answer: Option A
Question 3. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
  1.    Discharge of water by a centrifugal pump being run at a constant rpm
  2.    Water flow in the suction and discharge pipe of a reciprocating pump
  3.    Water discharge from a vertical vessel in which constant level is maintained
  4.    Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
Answer: Option B
Question 4. The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head.
  1.    Elevation
  2.    Velocity
  3.    Both A and B
  4.    Neither A nor B
Answer: Option B
Question 5. The discharge through a V-notch weir varies as
  1.    H3/2
  2.    H1/2
  3.    H5/2
  4.    H2/3
Answer: Option C
Question 6. If the discharge of a centrifugal pump is throttled, then its suction lift
  1.    Increases
  2.    Decreases
  3.    Remains unchanged
  4.    Data insufficient to predict
Answer: Option A

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