If the head over the triangular notch is doubled, the discharge will increase by __________ times.

The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

A

Plus

B

Minus

C

Divide

D

None of these

The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

A

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {\text{H}}$$

B

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^{\frac{3}{2}}}$$

C

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^2}$$

D

$$\frac{8}{{15}}{{\text{C}}_{\text{d}}} \times 2{\text{g}} \times {{\text{H}}^{\frac{5}{2}}}$$

The discharge over a triangular notch is

A

Inversely proportional to $${{\text{H}}^{\frac{3}{2}}}$$

B

Directly proportional to $${{\text{H}}^{\frac{3}{2}}}$$

C

Inversely proportional to $${{\text{H}}^{\frac{5}{2}}}$$

D

Directly proportional to $${{\text{H}}^{\frac{5}{2}}}$$

What is the value of included angle of a triangular notch for maximum discharge ?

A

30°

B

60°

C

90°

D

120°

The discharge passing over an ogee spillway is given by (where, L is effective length of spillway crest and H is the total head over the spillway crest including velocity head.)

A

$${\text{CL}}{{\text{H}}^{\frac{3}{2}}}$$

B

$${\text{CH}}{{\text{L}}^{\frac{3}{2}}}$$

C

$${\text{CL}}{{\text{H}}^{\frac{5}{2}}}$$

D

$${\text{CL}}{{\text{H}}^{\frac{1}{2}}}$$

The discharge over a rectangular notch is

A

Inversely proportional to $${{\text{H}}^{\frac{3}{2}}}$$

B

Directly proportional to $${{\text{H}}^{\frac{3}{2}}}$$

C

Inversely proportional to $${{\text{H}}^{\frac{5}{2}}}$$

D

Directly proportional to $${{\text{H}}^{\frac{5}{2}}}$$

For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

A

Binary mixture is represented by the apex

B

Binary mixture is represented by any point inside

C

Ternery mixture is represented by the sides

D

Pure component is represented by the apex

The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

A

Equal to

B

One-half

C

Three fourth

D

Double

The discharge through a V-notch weir varies as

A

$${{\text{H}}^{\frac{3}{2}}}$$

B

$${{\text{H}}^{\frac{1}{2}}}$$

C

$${{\text{H}}^{\frac{5}{2}}}$$

D

$${{\text{H}}^{\frac{2}{3}}}$$

In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.

A

Equal to

B

One-third

C

Two-third

D

Three-fourth

If the head over the triangular notch is doubled, the discharge will increase by __________ times.

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