Madan Mohan

Posts by Madan Mohan

What is runoff inducement in relation to water harvesting? Discuss briefly five methods of runoff inducements?

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Runoff Inducement The term water harvesting is used to describe the process by which water is collected from an area, that may have been modified or treated to increase surface runoff, and stored for use later. Some general ideas and concepts are presented on runoff inducement techniques (such as surface modification, cover sheets, and soil […]

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What are the different stages in the development of gully? Describe them briefly?

What are the different stages in the development of gully? Describe them briefly?

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Generally, gullies are formed by an increase in surface run-off. Therefore, minimizing surface run-off is essential in gully control. Watersheds deteriorate because of man’s misuse of the land, short intensive rainstorms, prolonged rains of moderate intensity, and rapid snow melts. These precipitation factors also turn into high run-off which causes flooding and forms gullies. In […]

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What is the function of a foot valve in a centrifugal pump? Mention principal causes of pump troubles with remedies?

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Foot Valve Various types of valves are required to maintain optimum function of water and air pumps, and among these valves are foot valves. Foot valves are used to prime up a centrifugal pump; they are known for their efficacy and affordability. Foot valves are a type of check valve and are placed at the […]

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Draw a neat diagram showing different types of aquifers. Indicate and explain the various types of wells that result from these aquifers?

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Aquifers are divided into two types: Unconfined Confined   An unconfined aquifer is often shallow, and the vadose zone above it primarily contains permeable material. The top of the aquifer is the water table. The water table moves up and down on a seasonal basis. It is highest during the wet season owing to higher […]

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Mention four types of irrigation efficiency with expressions to calculate each?

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Irrigation efficiencies Not all water taken from a source (river, well) reaches the root zone of the plants. Part of the water is lost during transport through the canals and in the fields. The remaining part is stored in the root zone and eventually used by the plants. In other words, only part of the […]

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Principal of Management, Organisational Behaviour, Human Resource Management & Strategic Management

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A predisposition to behave in a certain way and to take particular point of view Motivation Behaviour Perception Attitude Ans. Attitude Screening of those elements which create conflict and threatening situation in people is called as Response silence Resonse disposition Perceptual defence Maintenance of cognitive consistency Ans. Perceptual defence Set of predispositions which are determined […]

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What do you understand by the term ‘lining of irrigation channels’ what is the necessity for lining the irrigation channels? State the different materials used the lining the water course with their relative merits and demerits?

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Purpose of Canal Lining: Implementation of irrigation scheme which includes extensive distribution system is an expensive proposition. Hence it is very necessary to ensure that large losses do not occur in transit due to seepage. In practice, however, considerable loss of water takes place due to seepage in earthen canals. This loss is unavoidable unless […]

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Write about the suitability of the Parshall Flume over Weir as a flow measuring device?

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Parshall Flume Diagram of a Parshall flume, showing free-flow and submerged flow operating regimes A modified version of the Venturi flume is the Parshall flume. Named after it creator, Dr. Ralph L. Parshall of the U.S. Soil Conservation Service, the Parshall flume is a fixed hydraulic structure used in measuring volumetric flow rate in surface […]

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List out the characteristics of Centrifugal Pumps?

List out the characteristics of Centrifugal Pumps?

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Characteristics of Centrifugal Pumps Centrifugal pumps are specified by four characteristics. 1. Capacity: This is defined as the quantity of liquid which is discharged from the pump in a given time. Capacity is expressed in ‘m3/hr’, ‘gal/min’, ..etc. The capacity of a pump is governed by the ‘Head’, the ‘Speed’ and the ‘Size’ of the […]

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What is the Booster Pump? What role does it play in a sprinkler irrigation?

What is the Booster Pump? What role does it play in a sprinkler irrigation?

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Booster Pump Most pumps are used to take water from a standing (or non-pressurized) source and move it to another location. For example, a pump might take water from a lake and move it to a sprinkler system. A booster pump, on the other hand, is used to increase the water pressure of water that […]

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