Consider the following statements The general depth of scour calculated by Lacey’s formula in a river represents the depth below the: 1. Maximum flood level in the river 2. Minimum flow water level in the river 3. Normal flow water level in the river 4. Existing river bed level Which of these statements is/are correct ? a) 1, 2, 3 and 4 b) 1, 2 and 3 only c) 2, 3 and 4 only d) 1 only

Consider the following statements
 The general depth of scour calculated by Lacey’s formula in a river represents the depth below the:
1. Maximum flood level in the river
2. Minimum flow water level in the river
3. Normal flow water level in the river
4. Existing river bed level
 Which of these statements is/are correct ?
 a) 1, 2, 3 and 4 b) 1, 2 and 3 only c) 2, 3 and 4 only d) 1 only
by

1 Answer

Answer :

d) 1 only
by

Related questions

If D is the depth of scour below original bed, then the width of launching apron is generally taken as (A) 1.2 D (B) 1.5 D (C) 2.0 D (D) 2.5 D

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Last Answer : Answer: Option B

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

Consider the following statements in respect of critical flow in a wide rectangular channel: 1. The specific energy is minimum for a given discharge. 2. The discharge is maximum for a given specific energy 3. The specific force is minimum for a given discharge. 4. The Froude number is equal to unity. Which of these statements are correct? (a) 1 , 2 & 3 only (b) 1, 2, 3 & 4 (c) 1, 2 & 4 only (d) 2, 3 & 4 only

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Consider the following statements: The time of BOD assimilation in a stream can be affected by 1. Ratio of stream depth to flow width. 2. Stream BOD value 3. BOD rate constant. Which of these statements are correct? (a) 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

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Consider the following statements: Mitra’s hyperbolic transition design is based on the principle that : 1. Flow depth in the canal, as well as the discharge, is constant 2. width of the canal varies along with the discharge 3. Rate of change of velocity per unit length of transition is constant throughout the length of the transition. Which of these statements are correct ? a) 1, 2 and 3 b) 1 and 2 only c) 2 and 3 only d) 1 and 3 only

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Main purpose of mean water training for rivers is (A) Flood control (B) To provide sufficient depth of water in navigable channels, during low water periods (C) To preserve the channel in good shape by efficient disposal of suspended and bed load (D) All of the above

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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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Consider the following statements. The role of the gravel bed in a rapid sand filter is : 1. To filter out large suspended matter 2. To support the sand bed above it 3. To prevent the escape of sand particles 4. To uniformly distribute the backwash water 5. To prevent algae growth Which of the following statements are correct ? a) 1, 2, 3, 4 and 5 b) 2, 3 and 4 only c) 3, 4 and 5 only d) 1, 2 and 3 only

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Water flow in the river during flood can be categorised as the __________ flow. (A) Unsteady uniform (B) Unsteady non-uniform (C) Steady uniform (D) Steady non-uniform

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Consider the following statements regarding Andaman and Nicobar Islands: 1. It enjoys equatorial climate 2. This is the only place in India where a volcano is located 3. This is the only place in India where coral bed is found Which of the statements given above is/are correct? [NDA 2010] (a) 1, 2 and 3 (b) 1 and 2 (c) 2 and 3 (d) 1 only

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