Q. Which soil has the least range of conveyance loss according to Etcheverry and Harding?

View solution

Q. The quantity of water that can be diverted from the river into the main canal has no dependency on which of the following factor?

View solution

Q. In case of high demand but insufficient supplies, all the smaller channels are made to run simultaneously and continuously with reduced supplies.

View solution

Q. Which of the following combination is wrong?

View solution

Q. Which of the following characteristics is wrong about extensive irrigation?

View solution

Q. What are the categories of the entire water conveyance system?

View solution

Q. Which of the following statement is wrong?

View solution

Q. What is the correct formula for Flow Time in an hour for an individual farmer?

View solution

Q. What is the formula for the Flow Time for the unit area in hours?

View solution

Q. Kor demand of the crop should be taken into account while fixing the capacity of a canal.

View solution

Q. What is the most important point to be considered while fixing the canal capacity?

View solution

Q. Let us consider in a given area the plantation of a certain crop takes 20 days, and the total water depth required by this crop is 80 cm on the field. Find the duty of irrigation water required for the crop during this period.

(a) Assuming 20% losses of water in the water courses, find duty at the head of the course.
(b) Find the duty of the water at the head of the distributary, assuming 10% losses from the distributary head.

View solution

Q. A pump was installed in a field to supply water to the crops. The duty for this crop is 432 hectares/cumec on the field and the efficiency of pump is 50%. The sown area of the field is 5 hectares. Determine the maximum output required (H.P) of the pump, if the highest water level is 4 meters below the highest portion of the field. Assume negligible field channel losses.

View solution

Q. At a certain place, the transplantation of a crop takes 15 days, and the total depth of water required by the crop is 90 cm on the field. During the plantation rain falls and about 20 cm is utilised to fulfil the demand. Now determine the duty of irrigation water required during the plantation.

View solution

Q. Let us take the gross commanded area of a watercourse is 2000 hectares, 80% of which is culturable irrigable. Intensities of sugarcane and paddy are 30% and 50%. The duties of the crops at the head of the watercourse are 850 hectares/cumec and 1900 hectares/cumec. Find the discharge required at the head of the watercourse?

View solution

Q. We can find out monthly or fortnightly water requirements of various crops using intervals.

View solution

Q. By how much percentage canal capacity is increased to meet peak demands?

View solution

Q. Suppose the culturable commanded for a distributary is 8000 hectares, and the intensity of irrigation for Kharif season is 60% and that of rabi season is 30%. The average duty at the head of a distributary is 4000 hectares/cumec for Kharif season and for Rabi season it is 1800 hectares/cumec, find out discharge required at the head of the distributary?

View solution

Q. Determine the discharge required at the head of the distributary in a canal where Kharif area to be irrigated is 2400 hectares and Rabi area to be irrigated is 1800 hectares, for fulfilling maximum crop requirement. Assume suitable values for kor depth and kor period.

View solution

Q. Whose theory was the first to provide semi-theoretical analysis of the problem of incipient condition of bed motion?

View solution