Channel Morphology

Options:

1. There is a decrease in velocity downstream
2. There is an increase in velocity downstream
3. Velocity remains constant downstream
4. None of the above

Correct Answer

Options:

1. One
2. Two
3. Three
4. Four

Correct Answer

Options:

1. Bed-material load
2. Suspended sediment load
3. Depositional sediment load
4. Total sediment load

Correct Answer

Options:

1. Bed-material load
2. Suspended sediment load
3. Depositional sediment load
4. Total sediment load

Correct Answer

Options:

1. Width of the channel
2. Depth of the channel
3. Water discharge
4. Velocity of the flow

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Options:

1. Narrower and shallower channel
2. Deeper and narrower channel
3. Wider and shallower channel
4. Shallower and narrower channel

Correct Answer

Options:

1. Small-sized materials of low calibre
2. Large-sized materials of low calibre
3. Small-sized materials of high calibre
4. Large-sized materials of high calibre

Correct Answer

Options:

1. Channels that transport large quantity of bed-material load
2. Channels that transport small quantity of bed-material load
3. Channels that transport suspended sediment load
4. Channels that transport depositional sediment load

Correct Answer

Options:

1. Topography
2. Geomorphology
3. Slope
4. Width

Correct Answer

Options:

1. Wider channel bed
2. Finer material
3. Deeper channel depth
4. Regular spacing of riffles and pools

Correct Answer

Options:

1. Pools are wider and shallow, while riffles are narrow but relatively deep
2. Pools are narrow and deep, while riffles are wider but relatively shallow
3. Both pools and riffles are wide and shallow
4. Both pools and riffles are narrow and deep

Correct Answer

Options:

1. Channel patterns (straight and curve and discharge
2. Channel patterns (wavy and zigzag) and velocity
3. Channel materials and discharge
4. Channel patterns (straight and curve and water temperature

Correct Answer

Options:

1. The channel bed is wider in curved courses than in straight courses
2. The channel bed is wider in straight courses than in curved courses
3. The channel bed width is the same in both curved and straight courses
4. The channel bed width with riffles is not affected by the channel course

Correct Answer

Options:

1. Mean velocity is higher in curved channels than in straight channels at both riffles and pools
2. Mean velocity is higher in straight channels than in curved channels at both riffles and pools
3. Mean velocity is higher in curved channels at riffles but higher in straight channels at pools
4. Mean velocity is not affected by the channel patterns

Correct Answer

Options:

1. The variation of flow resistance between pools and riffles is less in curved reaches due to the high resistance of straight riffles
2. The variation of flow resistance between pools and riffles is less in straight reaches due to the high resistance of curved riffles
3. The variation of flow resistance between pools and riffles is the same in both curved and straight reaches
4. The variation of flow resistance between pools and riffles is not affected by the channel patterns

Correct Answer

Options:

1. Channel width, channel depth, and velocity
2. Channel width, channel slope, and discharge
3. Channel width, channel depth, and sediment size
4. Channel width, channel curvature, and water temperature

Correct Answer

Options:

1. In alternate sequence, e.g., pool-riffle-pool-riffle and so on
2. In random sequence, e.g., riffle-pool-riffle-pool and so on
3. Only pools occur at concave banks, and riffles occur at convex banks
4. Only riffles occur at concave banks, and pools occur at convex banks

Correct Answer

Options:

1. Low flow
2. Bankfull discharge
3. Extremely high floods
4. All of the above

Correct Answer

Options:

1. Bed topography
2. Channel-forming discharge
3. Pool formation
4. Riffle formation

Correct Answer

Options:

1. Low velocity currents
2. Bankfull discharge
3. High velocity currents
4. Extremely high floods

Correct Answer