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

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

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

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

A

2

B

2.828

C

5.657

D

4

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

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 V-notch weir varies as

A

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

B

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

C

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

D

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

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

The notch angle of the Izod impact test specimen is

A

10°

B

20°

C

30°

D

45°

If one angle of a triangle is three times a second angle and the third is 20 degrees more than the second angle, the second angle, in degrees, is

A

32

B

36

C

4

D

None of these

If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is

A

R (θ + tan θ)

B

R (θ + cot θ)

C

R2 (θ + tan θ)

D

R2 (θ + cot θ)

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

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