Which of the following methods is used to estimate flood discharge based on high water marks left over in the past? (A) Slope-area method (B) Area-velocity method (C) Moving boat method (D) Ultrasonic method

Which of the following methods is used to estimate flood discharge based on high water marks
left over in the past?
(A) Slope-area method
(B) Area-velocity method
(C) Moving boat method
(D) Ultrasonic method
by

1 Answer

Answer :

Answer: Option A
by

Related questions

In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power (A) 1/4 (B) 1/2 (C) 3/4 (D) 2/3

Description : In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power (A) 1/4 (B) 1/2 (C) 3/4 (D) 2/3

Last Answer : Answer: Option C

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Last Answer : (d)1, 2 and 3

Two different channels, M and N, in two different sites are designed based on Lacey’s theory, to carry same quantum of discharge. But the bed material of M is found to be finer than that of N. a) Channel M will have steeper longitudinal slope b) Channel N will have steeper longitudinal slope c) Channels M and N can have same longitudinal slopes d) Silting is more in M than in N

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Last Answer : b) Channel N will have steeper longitudinal slope

Which of the following is used to estimate which areas will be inundated during a flood, based on river height information? (a) satellite and radar images (b) flood maps / floodplain hydraulic models (c) river gauging stations (d) all of the above.

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Most important method for calculating discharge for planning a water supply project, is (A) Velocity area method (B) Weir or spillway method (C) Use of venturi-meter (D) Using power plant consumption

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Last Answer : (A) Velocity area method

The aqueduct or super-passage type of works are generally used when (A) High flood drainage discharge is small (B) High flood drainage discharge is large and short lived (C) High flood drainage discharge is large and continues for a long time (D) None of the above

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Last Answer : Answer: Option A

Ryve's formula for flood estimate in cumecs, is (A) Q = CA3/4 (B) Q = CA2/3 (C) Q = CA1/2 (D) Q = CA1/4

Description : Ryve's formula for flood estimate in cumecs, is (A) Q = CA3/4 (B) Q = CA2/3 (C) Q = CA1/2 (D) Q = CA1/4

Last Answer : Answer: Option B

channel is said to be of most economical cross-section, if (A) It gives maximum discharge for a given cross-sectional area and bed slope (B) It has minimum wetted perimeter (C) It involves lesser excavation for the designed amount of discharge (D) All of the above

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Last Answer : Answer: Option D

According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed) (A) A × m × i) (B) C × m × i) (C) AC × m × i) (D) mi × A × C)

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Last Answer : Answer: Option C

According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed) (A) A × m × i) (B) C × m × i) (C) AC × m × i) (D) mi × A × C)

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Last Answer : Answer: Option C

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Last Answer : Answer: Option C

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Explain the ultrasonic pulse velocity test and techniques of measuring pulse velocity through concrete.

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State principle of ultrasonic pulse-velocity test on concrete.

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If L, B and D length, breadth and depth of water in a rectangular sedimentation tank of total discharge Q, the settling velocity, is (A) Q/H(B) Q/D(C) Q/(D × B) (D) Q/(L × B)

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Last Answer : (D) Q/(L × B) 

method requires the following data pertaining annual flood series (i) Mean value (ii) Standard deviation (iii) Length of record (iv) Coefficient of skew The correct answer is (A) (i) and (ii) (B) (i),(i) and (iii) (C) (i), (ii) and (iv) (D) (i), (ii), (iii) and (iv)

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Last Answer : Answer: Option A

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Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks. More pr

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Description : What are the methods of flood control?

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The ratio of design discharge to the surface area of a sedimentation tank is called A. Surface loading B. Overflow rate C. Overflow velocity D. All of these

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Cd , Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena￾contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity). (A) Cd = Cc /Cv (B) Cd = Cc .Cv (C) Cd = Cv / Cc (D) None of these

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