Engineering :: Soil Mechanics and Foundations

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131.

The flow net in the seepage of water through a soil medium is a network of

A.	flow lines	B.	equi-potential lines
C.	flow lines and equi-potential lines	D.	water particles and their movement in the soil

132.

A flow net is used to determine the

A.	seepage flow	B.	seepage pressure
C.	exit gradient	D.	all of these

133.

Which of the following statement is correct?

A.	The flow line are perpendicular to equipotential lines.	B.	No two flow lines or equipotential lines start from the same point.
C.	No two flow lines cross each other	D.	all of the above

134.

The exit gradient of the seepage of water through a soil medium is the

A.	slope of the flow line	B.	slope of the equi-potential line
C.	ration of total head to the length of seepage	D.	ratio of the head loss to the length of seepage

135.

The hydraulic gradient provided at the downstream side of a hydraulic structure such as a dam, is called

A.	downstream gradient	B.	tail water gradient
C.	exit gradient	D.	any one of these

136.

The direction of seepage is always

parallel

perpendicular

137.

The critical gradient of the seepage of water

A.	directly proportional to void ratio	B.	increases with the decrease in void ratio
C.	inversely proportional to specific gravity	D.	increases with the decrease in specific gravity of soil

138.

The critical gradient of the seepage of water

A.	increases	B.	decreases
C.	does not change

139.

The seepage force in soils is

A.	proportional to head loss	B.	proportional to exit gradient
C.	perpendicular to the equi-potential lines	D.	all of these

140.

The seepage pressure is independent of the coefficient of permeability.

Correct

Incorrect