Theory of probability is applied to ?

The error due to bad ranging is ?

The Correction for sag is

Which of the following is not used in measuring perpendicular offsets ?

Optimum depth of kor watering for rice is
(a) 135 mm
(b) 165 mm (c) 190 mm (d) 215 mm

A multipurpose reservoir is the one which is
(a) Designed for one purpose but serves more than one purpose
(b) Planned and constructed to serve various purposes (c) Both (a) and (b) (d) None of the above

For a flood control reservoir, the effective storage is equal to
(a) Useful storage – valley storage
(b) Useful storage + surcharge storage (c) Useful storage + surcharge storage + valley storage (d) Useful storage + surcharge storage – valley storage

Trap efficiency is equal to
(a) Capacity/inflow ratio
(b) Capacity/outflow ratio (c) Outflow/inflow ratio (d) None of the above

The major resisting force in a gravity dam is
(a) Water pressure
(b) Wave pressure (c) Self-weight of dam (d) Uplift pressure

The elementary profile of a dam is
(a) A rectangle
(b) A trapezoidal (c) An equilateral triangle (d) A right angled triangle

for wave action in dams, the maximum height of freeboard is generally taken to be equal to
(a) 0.5 hw
(b) 0.7 h w (c) 1.25 hw (d) 1.50 hw