The critical depth in a channel can be produced by raising the bottom of the cha

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Question
The critical depth in a channel can be produced
Options
A. by raising the bottom of the channel
B. by lowering the bottom of the channel
C. by decreasing the width of the channel
D. by increasing the width of the channel
E. both (a) and (c) of above.

Correct Answer

both (a) and (c) of above.

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3. Precipitation caused by lifting of an air mass due to the pressure difference, is called
Options
A. cyclonic precipitation
B. convective precipitation
C. orographic precipitation
D. none of these.

4. With the usual meanings ofletters, the equation is used for determining the velocity of ground water flow in metres per day. It is known as
Options
A. Meinzer's formula
B. Slichter's formula
C. Darcy's formula
D. Hazen's formula.

7. Pick up the correct equation from the following :
Options
A. Run off = Surface run off + Ground water flow
B. Run off = Surface run off - Ground water flow
C. Run off = Surface run off / Ground water flow
D. Run off = Surface run off x Ground water flow.

9. A well penetrates to 30 m below the static water table. After 24 hours of pumping at 31.40 litres/minute, the water level in a test well at a distance of 80 m is lowered by 0.5 m and in a well 20 m away water is lowered by 1.0 m. The transmissibility of the auifer, is
Options
A. 1.185 m²/minute
B. 1.285 m²/minute
C. 1.385 m²/minute
D. 1.485 m²/minute
E. 1.585 m²/minute.

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