Hydraulic radius is equal to area divided by the square of wetted perimeter area

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Question
Hydraulic radius is equal to
Options
A. area divided by the square of wetted perimeter
B. area divided by wetted perimeter
C. wetted perimeter divided by area
D. square root of the area.

Correct Answer

area divided by wetted perimeter

Hydraulics problems

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1. Discharge with velocity of approach, over a rectangular weir is
Options
A. C_d x L x 2g [(H + ha)^3/2 + ha^3/2]
B. C_d x L x 2g [(H + ha)^3/2 - ha^3/2]
C. C_d x L x 2g [(H - ha)^3/2 + ha^3/2]
D. C_d x L x 2g [(H - ha)^3/2 - ha^3/2]

2. On a flow net diagram, the distance between two consecutive steam lines at two successive sections are 1 cm and 0.5 cm respectively. If the velocity at the first section is 1 m/sec, the velocity at the second is
Options
A. 1.0 m/sec
B. 0.5 m/sec
C. 2.0 m/sec
D. 2.5 m/sec
E. 3 m/sec.

7. Pick up the correct statement from the following :
Options
A. Dimensional homogeneity means the dimensions of each term in an equation on both sides are equal
B. Dimensionally homogeneous equations are independent of the system of units
C. In dimensionally homogeneous equation, the powers of fundamental dimensions on either side of the equation are identical
D. All the above.

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