As per Lacey’s theory, the silt factor is_________________?

A. Directly proportional to average par¬ticle size
B. Inversely proportional to average par¬ticle size
C. Directly proportional to square root of average particle size
D. Not related to average particle size

The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?

A. Less than 1
B. Equal to 1
C. Greater than 1
D. Equal to zero

According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is_____________?

A. 0
B. Unity
C. Infinity
D. Very large

As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at_____________?

A. Lower level
B. Higher level
C. Same level
D. Any of the above depending on the design

The main function of a divide wall is to_______________?

A. Control the silt entry in the canal
B. Prevent river floods from entering the canal
C. Separate the undersluices from weir proper
D. Provide smooth flow at sufficiently low velocity

If there are two canals taking off from each flank of a river, then there will be____________________?

A. One divide wall and one undersluice
B. One divide wall and two undersluices
C. Two divide walls and one undersluice
D. Two divide walls and two undersluices

In a chute spillway, the flow is usually____________________?

A. Uniform
B. Subcritical
C. Critical
D. Super critical

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

Seepage through foundation in an earthen dam is controlled by providing___________________?

A. Rock toe
B. Horizontal blanket
C. Impervious cut off
D. Chimney drain

The most suitable material for the central impervious core of a zoned embankment type dam is_______________?

A. Clay
B. Coarse sand
C. Silty clay
D. Clay mixed with fine sand