The sheet of water flowing over a notch or a weir is known as

Related MCQs

• The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
• 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 difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size.
• 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.
• When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
• When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
• The formula for discharge over a sharp-crested weir and Ogee weir is same as that of a rectangular weir.
• In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir.
• An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.