Irrigation Engineering

If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is

If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by

Canals taken off from ice-fed perennial rivers, are known

Which of the following type of irrigation methods uses artificial rain to irrigate the land?

Which of the following type of irrigation method can be used for both flat lands and relatively steep lands?

Which of the following is the quality of a good irrigation method?

Which of the following type of method is adopted for research studies on crops?

What is the field irrigation requirement (FIR)?

Which of the following strainer is used for shallow irrigation tube wells particularly in deltaic regions of developing countries?

Which of the following is a dam reservoir catering to flood control, irrigation, and water supply basically designed for irrigation alone?

According to the Central Board of Irrigation and Power, the PA ratio for graded aquifer should be _______________

An irrigation project is classified as a major project when the CCA involved in the project is more than ___________

To determine the discharge at a section in a stream from its rating curve, the required data are

i) slope of water surface at the section

ii) stage at the section

iii) current meter readings at the section

The correct answer is

Variability of rainfall is

i) largest in regions of high rainfall

ii) largest in coastal areas

iii) largest in regions of scanty rainfall

The correct answer is

The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir conditions, are

i) Water pressure

ii) Self-weight

iii) Uplift

iv) Pressure due to earthquake

The correct answer is

Interception losses are due to

i) evaporation

ii) transpiration

iii) stream flow

The correct answer is

Lacey’s equation for calculating flood discharge in rivers, is

Which of the following types of falls use parabolic glacis for energy dissipation ?

Lining of irrigation channels

Which of the following is the incorrect statement?

i. Cattle crossings also provide safety to cattle that are swept away by currents besides their usual function of helping the cattle to cross the canal.

ii. A canal escape helps in supplying irrigation water to the downstream watercourses.

iii. Bed bars are constructed in canals at the toe of the canal lining to prevent slippage of the lining.