Irrigation Engineering MCQ Questions & Answers

41

River training for depth is achieved by

A) groynes B) construction of dykes or leavees C) both (A) and (B) D) groynes and bandalling

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Answer & Solution

Answer: Option D

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42

For designing the venturi head,

A) Width of the throat should not be less than one-third of the bed width of main canal B) Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal C) Minimum throat width should not be less than 60 cm D) All the above

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Answer & Solution

Answer: Option D

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43

For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is

A) Zero B) 0.25 C) 0.50 D) 1.00

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Answer & Solution

Answer: Option D

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44

If the intensity of rainfall is more than the infiltration capacity of soil, then the infiltration rate will be

A) equal to rate of rainfall B) equal to infiltration capacity C) more than rate of rainfall D) more than infiltration capacity

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Answer & Solution

Answer: Option B

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45

A hydraulic jump is generally formed when a stream moving with

A) A hyper-critical velocity meets a stream moving with a critical velocity B) A hyper-critical velocity meets a stream moving with a hyper-critical velocity C) A hyper-critical velocity meets a stream moving with a sub-critical velocity D) A sub-critical velocity meets a stream moving with a hyper-critical velocity

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Answer & Solution

Answer: Option C

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46

Hydrodynamic pressure due to earthquake acts at a height of (where H is the depth of water)

A) $$\frac{{3{\text{H}}}}{{4\pi }}$$ above the base B) $$\frac{{3{\text{H}}}}{{4\pi }}$$ below the water surface C) $$\frac{{4{\text{H}}}}{{3\pi }}$$ above the base D) $$\frac{{4{\text{H}}}}{{3\pi }}$$ below the water surface

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Answer & Solution

Answer: Option C

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47

The maximum permissible eccentricity for no tension at the base of a gravity dam is

A) $$\frac{{\text{B}}}{2}$$ B) $$\frac{{\text{B}}}{3}$$ C) $$\frac{{\text{B}}}{4}$$ D) $$\frac{{\text{B}}}{6}$$

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Answer & Solution

Answer: Option D

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48

The major resisting force in a gravity dam is

A) water pressure B) wave pressure C) self-weight of dam D) uplift pressure

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Answer & Solution

Answer: Option C

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49

Which of the following spillways is least suitable for an earthen dam ?

A) ogee spillway B) chute spillway C) side channel spillway D) shaft spillway

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Answer & Solution

Answer: Option A

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50

Coefficient of discharge of an ogee spillway

A) depends on depth of approach and upstream slope B) depends on downstream apron interference and downstream submergence C) remains constant D) both (A) and (B)

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Answer & Solution

Answer: Option D

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Irrigation Engineering MCQ Questions & Answers | Civil Engineering