Lakshya Education MCQs

Question: With the increase in the quantity of water supplied, the yield of most crops
A.increases continuously
B.decreases continuously
C.increases upto a certain limit and then becomes constant
D.increases upto a certain limit and then decreases
Answer: Option D

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Question 1. If D is the depth of scour below original bed, then the width of launching apron is generally taken as
  1.    1.2 D
  2.    1.5 D
  3.    2.0 D
  4.    2.5 D
Answer: Option B
Question 2. If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing water at 3 P.M. to the outlet, then time of concentration will be
  1.    15 minutes
  2.    20 minutes
  3.    30 minutes
  4.    60 minutes
Answer: Option D
Question 3. Lane's weighted creep theory assumes
  1.    Equal weightage to horizontal and vertical creeps
  2.    Double weightage to horizontal creep and one weightage to vertical creep
  3.    Triple weightage to horizontal creep and one weightage to vertical creep
  4.    Triple weightage to vertical creep and one weightage to horizontal creep
Answer: Option D
Question 4. A raingauge should preferably be fixed
  1.    near the building
  2.    under the tree
  3.    in an open space
  4.    in a closed space
Answer: Option C
Question 5. A current meter is used to measure the
  1.    velocity of flow of water
  2.    depth of flow of water
  3.    discharge
  4.    none of the above
Answer: Option A
Question 6. Instantaneous unit hydrograph is a hydrograph ofi) unit durationii) unit rainfall excessiii) infinitely small durationiv) infinitely small rainfall excessThe correct answer is
  1.    (i) and (ii)
  2.    (i)and(iv)
  3.    (ii) and (iii)
  4.    (iii) and (iv)
Answer: Option C

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