Q. Trapezoidal weir has another popular name. What is it?

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Q. What is not the way of classifying weir based on their shape of crest?

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Q. What is not the way of classifying weir based on the emerging nappe?

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Q. Find the discharge of water flowing over a rectangular notch of 1.5 m length when the constant head over the notch is 275 mm. Take Cd = .60

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Q. The head of water over a rectangular notch is 900 mm. The discharge is 300 litres/s. Find the length of the notch, when Cd =.62

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Q. Find the discharge of water flowing over a rectangular notch of 1.3 m length when the constant head over the notch is 255 mm. Take Cd = .62

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Q. The head of water over a rectangular notch is 700 mm. The discharge is 200 litres/s. Find the length of the notch, when Cd =.63

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Q. Find the discharge over triangular notch of angle 50° when the head over the V notch.

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Q. The expression for discharge for a right angled notch is more complex than rectangular notch.

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Q. The results of which are more accurate; rectangular notch or triangular weir.

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Q. What is main reading required in calculation for rectangular notch or weir.

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Q. We need to obligatorily have ventilation in triangular notch.

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Q. Rectangular notch may or may not have ventilation.

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Q. What is the reduction in crest length due to each end contraction?

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Q. In Francis formula, the effective length is

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Q. In Francis empirical expression for discharge, the relation between head of water and discharge is

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Q. In Bazin’s formula, the discharge is inversely proportional to the length of weir.

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Q. The head of water over a rectangular weir is 38 cm. The length of the crest of the weir end contraction suppressed is 1.3 m. Find the discharge using the Francis formula.

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Q. The head of water over a rectangular weir is 28 cm. The length of the crest of the weir end contraction suppressed is 1.27 m. Find the discharge using the Francis formula.

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Q. The head of water over a rectangular weir is 26 cm. The length of the crest of the weir end contraction suppressed is 1.25 m. Find the discharge using the Francis formula.

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