Tag: flow of water

Questions Related to flow of water

Match the items in column I with the appropriate ones in column II.

Column I Column II
I. Winnowing A. Irrigation
II. Threshing B. Hose
III. Drip system C. Separation of grain from stalks by beating the stalks
IV. Weeds D. Separation of husk from heavy seeds of grains by wind

Select the correct alternative.

evs - i flow of water irrigation irrigation and its types irrigation and types

  1. I- D, II- C, III- A, IV- B

  2. I- D, II- C, III- B, IV- A

  3. I- C, II- D, III- B, IV- A

  4. I- C, II- D, III- A, IV- B

Show answer
Correct Option: A
Explanation:

Wind winnowing is an agricultural method used for separating grain from chaff. It is also used to remove pests from stored grain. Threshing is the process of loosening the edible part of cereal grain (or other crop) from the scaly, inedible chaff that surrounds it by some mechanical means, as by beating with a flail or by the action of a threshing machine. It is the step in grain preparation after harvesting and before winnowing, which separates the loosened chaff from the grain. Drip irrigation is sometimes called trickle irrigation and involves dripping water onto the soil at very low rates from a system of small diameter plastic pipes fitted with outlets called emitters or dripper hose. Subsurface drip irrigation, with the help of hose, controlled annual weeds more effectively than sprinkler or furrow irrigation in plots not treated with herbicides.

Indira Gandhi Canal has brought greenery to

evs flow of water irrigation irrigation and its types irrigation and types

  1. Haryana

  2. Rajasthan

  3. Karnataka

  4. Andhra Pradesh

Show answer
Correct Option: B
Explanation:

Indira Gandhi canal is an important irrigation canal in India. It starts from Firozpur of Punjab and terminates its irrigation facilities in Thar Desert of Rajasthan. The canal passes seven districts of Rajasthan namely Barmer, Bikaner, Churu, Hanumangarh, Jaisalmer, Jodhpur, and Sriganganagar. Hence it has brought greenery to Rajasthan. Thus the correct answer is option B.

A farmer's crop is repeatedly getting infected from a fungal disease. The soil in which crop is sown is clayey. Which of these irrigation methods would lessen the chance of infection?

evs - i flow of water irrigation irrigation and its types irrigation and types

  1. Furrow irrigation

  2. Drip irrigation

  3. Basin irrigation

  4. Sprinkler irrigation

Show answer
Correct Option: B
Explanation:

A.Furrow irrigation -  is conducted by creating small parallel channels along the field length in the direction of predominant slope. Water is applied to the top end of each furrow and flows down the field under the influence of gravity.

B.Drip irrigation -  is the most efficient water and nutrient delivery system for growing crops. It delivers water and nutrients directly to the plant's roots zone, in the right amounts, at the right time, so each plant gets exactly what it needs, when it needs it, to grow optimally.

C.Basin irrigation -  irrigation of land by surrounding it with embankments to form a basin and flooding it with water.

D.Sprinkler irrigation - is the method of applying water to a controlled manner in that is similar to rainfall. The water is distributed through a network that may consist of pumps, valves, pipes, and sprinklers.Irrigation sprinklers can be used for residential, industrial, and agricultural usage.

So, the correct option is ‘Drip irrigation’.

The major defects of rubber belts are

evs flow of water irrigation irrigation and its types irrigation and types

  1. Costly

  2. Slips on wet

  3. Early rubbed

  4. Increased due to heat

Show answer
Correct Option: B
Explanation:

Rubber belt slips on wet due to loosing of grip. It also slips because the rubber is a type of material that always remains compressed in nature. Rubber belts are made up of synthetic rubbers or natural rubber.                                     So, the correct option is 'Slips on wet'.

The grooved pulleys are made-up of

evs flow of water irrigation irrigation and its types irrigation and types

  1. Steel

  2. Cast iron

  3. Wooden

  4. Both A and B

Show answer
Correct Option: D
Explanation:

A grooved pulley is a wheel-like structure that is designed for movement supporting and changing of directions. These are used to lift up water from the well tied with a rope. These are made of steel, cast iron, aluminum, zinc. So, the correct option is 'Both A and B'. 

Which of the following is used maximum for lifting water from wells?

evs flow of water irrigation irrigation and its types irrigation and types

  1. Persian wheel (Rahat)

  2. Swing basket (Bedi)

  3. Dhenkuli

  4. Don

Show answer
Correct Option: A
Explanation:

  • Rahat system of irrigation is a way to get water from a well in which large wheels are used. It is tied to oxen and is turned by them to get water out of the wells. 
  • As many wheels are used in this system so it can lift up much water into the field. 

So, the correct option is 'Persian wheel (Rahat)'.

'Drip' irrigation is generally followed in which of the following countries?

evs - i flow of water irrigation irrigation and its types irrigation and types

  1. Israel

  2. America

  3. Australia

  4. Japan

Show answer
Correct Option: A
Explanation:

Drip irrigation also called as trickle irrigation. It involves dripping water onto the soil at very low rates from a system of small diameter plastic pipes fitted with outlets called emitters or drippers. Water is supplied very close to plants so that only part of the soil in which the roots grow is wetted. In this type of irrigation, water is supplied within one to three days, so that the plant can grow well. Drip irrigation started in China followed by modern drip irrigation in Germany. Plastic emitter in drip irrigation was started in Israel. Thus, the correct answer is option A.

Which of the following is used for lifting water from 8-10 m depth?

evs flow of water irrigation irrigation and its types irrigation and types

  1. Washer Rahat

  2. Hand pump

  3. Mayadar lift

  4. None of these

Show answer
Correct Option: D
Explanation:

(A) Washer Rahat is the oldest system of irrigation system where animals are used to get water out of the well. It is made up of wheel and buckets attached to it with a chain. It can lift water up to 1-3 m depth

(B) Hand pumps are used in sprinkler irrigation systems. A hand pump can lift up water less than 7 m depth.
(C) Mayadar lift is a type of irrigation system in which water is lifted by an external force.
So, the correct answer is 'None of the above'

Swing-basket (Dhekli) is used for___________

evs flow of water irrigation irrigation and its types irrigation and types

  1. Making furrow

  2. Lifting water from wells

  3. Destroying weeds

  4. Leveling of land

Show answer
Correct Option: B
Explanation:

  • Dhekli is a method where water is taken directly from the wells with the help of a pulley. 
  • It is a manual method of irrigation. In the method, the farmers take a basket from the well and pour it into the pipes which lead to the fields. 

So, the correct option is 'Lifting water from wells'.

Which of the following is best for driving machine from low power to slow speed? 

evs flow of water irrigation irrigation and its types irrigation and types

  1. Belts and pulley

  2. Spur gear

  3. Toothed wheel and chains

  4. None of the above

Show answer
Correct Option: A
Explanation:

Belts and pulley system is characterized by two or more pulleys tied to a common belt and transmit rotatory motion. Belts are used as a source of motion and are twisted between the pulleys. This allows speed to transmit across the axles or shafts which changes from low power and slow speed.                                                                                       

So, the correct option is 'Belts and pulleys'.