Q.1
The main cause of meandering is
Q.2
The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than
Q.3
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are
Q.4
A river is said to be of
Q.5
An artesian aquifer is the one where
Q.6
The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be
Q.7
The main function of a diversion head works of a canal from a river, is
Q.8
The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called
Q.9
According to Kennedy, the critical velocity (V₀) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).
Q.10
The uplift pressure on a dam can be controlled by
i) constructing cutoff under upstream face
ii) constructing drainage channels bet-ween the dam and its foundation
iii) by pressure grouting in foundation
The corret answer is
Q.11
If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be
Q.12
A minimum of 90 cm free board is provided if the discharge in the canal is between
Q.13
If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is
Q.14
Finally formed berms in canals are provided for
Q.15
Canals constructed for draining off water from water logged areas, are known
Q.16
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is
Q.17
For a unique design of a channel by Kennedy's theory
Q.18
For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)
Q.19
The intensity of irrigation means
Q.20
The width of a meander belt is the transverse distance between
Q.21
Pick up the correct statement from the following:
Q.22
The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is
Q.23
The difference in level between the top of a bank and supply level in a canal, is called
Q.24
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
Q.25
The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
Q.26
A hydroelectric scheme operating under a head of 80 m will be classified as
Q.27
Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as
Q.28
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
Q.29
For smooth entry of water in a canal, the angle between head regulator and water is generally kept
Q.30
For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is
0 h : 0 m : 1 s