According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

Related MCQs

• The formula for discharge over a sharp-crested weir and Ogee weir is same as that of a rectangular weir.
• When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero
• A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
• A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.
• The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
• 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.
• The Francis formula for the discharge over Cippoletti weir is
• When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
• When the corfficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
• When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as