IRRIGATION ENGINEERING QUIZ

A divide wall is provided

Parallel to the axis of weir and upstream of it

Parallel to the axis of weir and downstream of it

At right angle to the axis of weir

At an inclination to the axis of weir

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficit of sediments in flowing water may cause a river

Aggrading type

Meandering type

Degrading type

Sub-critical type

TRUE ANSWER : ?
YOUR ANSWER : ?

The length and width of a meander and also the width of the river, vary roughly as

Cube of the discharge

Square of the discharge

Discharge

Square root of the discharge

TRUE ANSWER : ?
YOUR ANSWER : ?

To estimate the magnitude of a flood with a return period of T years, Gumbel’s distribution method requires the following data pertaining to annual flood series i) mean value ii) standard deviation iii) length of record iv) coefficient of skew The correct answer is

(i) and (ii)

(i),(ii) and (iii)

(i), (ii), (iii) and (iv)

(i), (ii) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick up the correct statement from the following sentence

The escapes are aligned to take advantage of contours of lower values

Escapes are essential safety valves in a canal system

All of these

The escapes must lead the surplus water to natural drainages

TRUE ANSWER : ?
YOUR ANSWER : ?

The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

Syphon

Super-aqueduct

Syphon aqueduct

Super passage

TRUE ANSWER : ?
YOUR ANSWER : ?

The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

90°

60°

30°

45°

TRUE ANSWER : ?
YOUR ANSWER : ?

The main cause of meandering is

None of these

presence of an excessive bed slope in the river

degradation

the extra turbulence generated by the excess of river sediment during floods

TRUE ANSWER : ?
YOUR ANSWER : ?

Main purpose of mean water training for rivers is

All of these

To provide sufficient depth of water in navigable channels, during low water periods

To preserve the channel in good shape by efficient disposal of suspended and bed load

Flood control

TRUE ANSWER : ?
YOUR ANSWER : ?

Process of meandering is due to

Relative erodibility of the bed and banks

All listed here

Discharge and hydraulic properties of streams

Sediment load of streams

TRUE ANSWER : ?
YOUR ANSWER : ?