Seepage through foundation in an earthen dam is controlled by providing

Seepage through embankments in an earthen dam is controlled by

A

drainage filters

B

relief wells

C

drain trenches

D

provision of downstream berms

Tilaiya Dam, Konar dam, Maithon Dam and Panchet Hill Dam have been constructed under:

A

The Narmada Valley Project

B

The Damodar Valley Project

C

The Krishna Valley Project

D

The Mahanadi Project

For the upstream face of an earthen dam, the most adverse condition for stability of slope is

A

sudden drawdown

B

steady seepage

C

during construction

D

sloughing of slope

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

The loose pockets in soil mass can be bridged safely by providing a raft foundation provided the soft area is smaller than

A

The column spacing

B

One-third the column spacing

C

Half the column spacing

D

Three-fourth the column spacing

As compared to gravity dams, earthen dams

A

are costlier

B

are less susceptible to failure

C

require sound rock foundations

D

require less skilled labour

If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

A

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$

B

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left$$

C

$${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}{\left^2}$$

D

$${\text{h}} = \sqrt {\frac{{\text{W}}}{{{\text{Aw}}}}} {\left^2}$$

Unofficial, and usually illegal, system of providing people with more then their share of goods and services where their prices are controlled, is called

A

black money

B

blue chip

C

black market

D

black economy

Bligh's theory of seepage assumes

A

Equal weightage to the horizontal and vertical creep

B

More weightage to horizontal creep than vertical creep

C

Less weightage to horizontal creep than vertical creep

D

Loss of head follows the sine curve

If B and d are the bed width and depth of a channel in meters, the combined losses due to evaporation and seepage in cumecs per kilometer length of the channel, is

A

$$\frac{1}{{50}} \times {\left( {{\text{B}} + {\text{d}}} \right)^{\frac{2}{3}}}$$

B

$$\frac{1}{{100}} \times {\left( {{\text{B}} + {\text{d}}} \right)^{\frac{2}{3}}}$$

C

$$\frac{1}{{150}} \times {\left( {{\text{B}} + {\text{d}}} \right)^{\frac{2}{3}}}$$

D

$$\frac{1}{{200}} \times {\left( {{\text{B}} + {\text{d}}} \right)^{\frac{2}{3}}}$$

Seepage through foundation in an earthen dam is controlled by providing

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