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1. Retrogression of the bed level of a river downstream a weir, occurs due to





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QA->At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hrs less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for this 24 mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?....
QA->At his usual rowing rate, Ram can travel 12 miles downstream in a certain river in 6 hrs less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for this 24 mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?....
QA->A boat goes 24 km upstream and 28 km downstream in 6 hrs. It goes 30 km upstream and 21 km downstream in 6 hrs and 30 minutes. The speed of the boat in still water is:....
QA->A boat goes 24 km upstream and 28 km downstream in 6 hrs. It goes 30 km upstream and 21 km downstream in 6 hrs and 30 minutes. The speed of the boat in still water is....
QA->A boat goes 30 km upstream and 44 km downstream in 10 hrs. In 13 hrs, it can go 40 km upstream and 55 km downstream. The speed of the boat in still water is....
MCQ->Retrogression of the bed level of a river downstream a weir, occurs due to....
MCQ->When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as....
MCQ->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.....
MCQ->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.....
MCQ->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.....
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