64.

65.

66.

67.

68.

Full Reservoir Level (FRL) is :

(A) The maximum elevation to which reservoir water surface will rise during normal

operating conditions

(B) The maximum level to which reservoir water will rise during worst design flood
(C) The normal operating level in a reservoir
(D) Both (B) and (C)

The following statements are connected with the seepage of water through earthen dams.
Choose the false statement from the given :

(^) The hydrostatic pressure on the phreatic line is equal to zero

(B) The flow of water below the phreatic line reduces the weight of the soil
(C) The phreatic line represents the top stream line
(D)_ The soil within the capillary fringe experiences reduction in shear strength

Among the arch dams given below, choose the one which consume least quantity of concrete :

(A) Constant radius arch dam
(B) Constant angle arch dam

(C) Shell arch dam

(D) Variable radius arch dam

The following statements are with respect to the canal falls, choose the wrong statement :

(A) 1൩ Sarda fall, for discharges above 14 Cumecs, trapezoidal crest having upstream
side slope of 1:8 is provided

(B) In Ogee falls there is heavy draw down on the upstream side
(0) Atrapezoidal notch fall provides a proportionate fall
(D) Well type falls are suitable for high drops and very low discharges

Consider the following statements made with respect to the design of bottom floor of a
Syphon Aqueduct :

(1)
(11)

Uplift due to water table occurs when the bottom slab is not depressed below the
rainage bed

The maximum uplift due to water table occurs when there is no water flowing over the
canal

(111) The maximum uplift due to water table occurs when water table reaches up to the

rainage bed level

(117) Maximum uplift due to seepage of water from the canal occurs when both canal and

rain are running full

Choose the correct statement combination from the options given below

(A) 1 111೩೧617 (8) II, Hl and IV
( IVonly ൩) 1110117

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