In discharge of water over ogee weir, discharge is directly proportional to the second power of length.

For discharge over ogee weir discharge is directly proportional to length but for discharge over narrow crested weir it is inversely proportional to length.

A

True

B

False

Statement (I): The ogee spillway is a control weir having an S-shaped crest profile which provides a high discharge coefficient without causing cavitations. Statement (II): The crest profile of ogee spillway conforms to the lower nappe of flow over a ventilated sharp-crested weir and ensures a constant discharge coefficient for all heads.

A

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

B

Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

C

Statement (I) is true but Statement (II) is false

D

Statement (I) is false but Statement (II) is true (II) is true:

In discharge of water over Ogee weir, discharge is directly proportional to the first power of length.

A

True

B

False

Consider the following statements: 1. If x is directly proportional to z and y is directly proportional to z, then (x2 - y2) is directly proportional to z2. 2. If x is inversely proportional to z and y is inversely proportional to z, then (xy) is inversely proportional to z2. Which of the above statements is/are correct?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Consider the following measuring structures. A. Submerged broad-crested weir B. Free broad-crested weir C. Free sharp-crested weir D. Free ogee spillway Which is the correct sequence of the discharge coefficient of these structures in increasing order?

A

B, A, C, D

B

B, A, D, C

C

A, B, D, C

D

A, B, C, D

The discharge over a rectangular weir, considering the velocity of approach, is (where H₁ = H + H_a)
(H₁ = Total height of water above the weir, H = Height of water over the crest of the weir and H_a = Height of water due to velocity of approach)

A

$$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left$$

B

$$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left$$

C

$$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left$$

D

$$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left$$

How is the degree of emulsion polymerization related to the monomer concentration, and the rate of radical generation, Ri? , inversely proportional to Ri b) inversely proportional to Ri, directly proportional to . c) directly proportional to Ri, independent of . d) directly proportional to , independent of Ri

A

and the rate of radical generation, Ri? ] directly proportional to , inversely proportional to Ri

B

M

C

M

D

M

An Ogee weir 5 m long had a head of 40 cm of water. If CD = 0.61, find the discharge over the weir.

A

2.9 m3/s

B

2.3 m3/s

C

3.1 m3/s

D

3.3 m3/s

An Ogee weir 3.4 m long had a head of 40 cm of water. If CD = 0.63 find the discharge over the weir.

A

1.61 m3/s

B

2.5 m3/s

C

3.1 m3/s

D

3.3 m3/s

In discharge of water over narrow crested weir, discharge is directly proportional to the second power of height.

A

True

B

False

In discharge of water over ogee weir, discharge is directly proportional to the second power of length.

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