Irrigation interview questions

 

irrigation interview questions

QUESTION NO 01

Enlist method of surface irrigation?

Surface irrigation method is

·         Furrow method

·         Flooding method

·         Basin method

·         Zigzag method

QUESTION NO 02

Define the inverted filter?

 

The filter is made at the end of the solid floor on the downstream side of the barrage. It is made in three layers. Underneath the bottom is made of sand, 15 cm thick. The middle layer is made of 22.50 cm thick sand and brake stone. The top is made from gravel in a thickness of 25.50 cm. From the upstream side, the underground water passes through the bottom of the weir and comes out through this filter.

 QUESTION NO 03

Define link Canal?

 

These canals are made to carry water from one river to another. These canals are not used for irrigation. When the water of one river dries up, the water of another river is poured.

QUESTION NO 04

Define lining of Canal?

 

Canal beds and sidewalks are paved to prevent wastage of water in the canals which is called lining of Canals. This increases the efficiency of the canals and the nearby areas are not affected.

 QUESTION NO 05

Define core watering?

 

The first water given to the crop after planting any crop is called core watering and the depth of water applied is called core depth.

QUESTION NO 06

Define intensity of irrigation?

 

The total number of crops sown during the harvest period on the part of the cultivable command area is called the intensity of irrigation for this season's crops. That is, if crops are grown on 70% of the cultivable area in Rabi season, then the intensity of irrigation in Rabi season will be 60%.

QUESTION NO 07

Define silt excluder?

 

To prevent silt from flowing into the canal, a structure is built in front of the canal's head regulator that dumps the silt into the rivers instead of the canal. Most silt is found near rivers and the purpose of the silt excluder is to pour silt into the river.

QUESTION NO 08

Define scouring in channels?

 

Scouring of canals is defined as the process of uprooting silt from the bottom and sides of canals and carrying it away. The water viscosity is not kept high to avoid scouring.

 QUESTION NO 09

Define Canal regulation works?

 

Some construction is being done on the canals to make the canal water safer and to improve the performance of the canal which is called regulation Canal regulation works.  Which includes Canal head regulator, cross regulator, flume, open flume and fall etc.

QUESTION NO 10

 Define flume?

 

The flume has a structure that narrows the canal section and is used to determine the amount of water flowing in the canal. The section of the canal is narrowed again to the normal section  vist to more interveiw question

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QUESTION NO 11

 Define A.P.M outlet?

 

This outlet is also called Adjustable Proportional Module Outlet. This outlet is also called orifice semi module. In this outlet the orifice is enlarged through a roof block and thus it becomes a flume.

QUESTION NO 12

Enlist the work of maintenance of canal?

 

·         berm construction

·         Good cleaning

·         Strengthen the backs

·         Filling in the gaps

·         Remodeling

·         Maintenance of Hydraulic structure

QUESTION NO 13

 Define spoil Bank?

 

If the natural ground level is higher than the top level of the canal embankment then the canal is completely harvested. This part of the canal is cut more A bank is made to dispose of the soil which is called spoil bank.

QUESTION NO 14

Define the spillway?

 

A passage is placed in the dam wall to discharge the waste water from the dam which is called spillway. If water is intended to flow over the dam, then a concrete dam is built. If a small amount of water is intended to pass through a path, an earthen dam is built

QUESTION NO 15

 Define the pickup weir?

A wall called a weir is built across the river to store river water. Above gates are also called controls to store more water and control the flow of water.

QUESTION NO 16

Define sudden drawdown of Reservoir?

 

When the water level of the artificial reservoir drops suddenly, ie a very large amount of water is released in a short period of time, the wet surface on the upstream side of the reservoir is endangered and some part of the dam slips and falls. This sudden drop of water is called sudden drawdown of Reservoir.

QUESTION NO 17

 Define the cash crop?

 

Cash crops are crops whose production is much higher than the household needs and the farmers get money by selling the crops. These include rice, cotton, sugarcane, tobacco and oil products

QUESTION NO 18

Define the afflux?

 

The weir in the river or canal causes the water level on the upstream side to rise above the natural level. This altitude is caused by piers and abutment in the water path. It is called afflux also called back water. Due to which the height of the hydraulic structure has to be kept high.

QUESTION NO 19

Define gravity dam?

 

A dam that stays on the ground because of its weight and can easily handle water pressure due to its strong foundations and weight on the ground is called gravity dam. This dam weighs more than the water pressure.

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QUESTION NO 20

What is drip irrigation?

 

It is a system of irrigation in which plants are planted in rows in the field and these rows are planted on small soil slaves and a pipeline is laid under them.  Water comes out of the open joints of the pipe and makes the soil appear.

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