Tag: evs

Questions Related to evs

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

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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)'.

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'.

........... allows the control of flow of water during irrigation.

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

  1. Rahat

  2. Pulley system

  3. Lever system

  4. None of these

Show answer
Correct Option: C
Explanation:

Lever systems allow the user to control the speed of irrigation by choosing slow, medium or fast water flow; however, the lever system method is not as ancient, or inexpensive, as other methods. 

Therefore, the correct answer is option C.

Moat, Dhekli and Rahat are different

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

  1. Traditional methods of cultivation

  2. Traditional methods of seed sowing

  3. Traditional methods of weeding

  4. Traditional methods of irrigation

Show answer
Correct Option: D
Explanation:

(A) Traditional methods of cultivation are Tilling, planting, burning of land and cattle grazing.

(B) Traditional methods of seed sowing are Broadcasting, seed drill and open field planting.
(C) Traditional methods of weeding include covering, removal of weeds by hands, crop rotation etc.
(D) Traditional methods of irrigation include Chain-pump, Dhekli, Moat, Rahat,
So, the correct option is 'Traditional methods of irrigation'.

Chain pump system of irrigation was primarily used in 

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

  1. Europe

  2. China

  3. Both A and B

  4. India

Show answer
Correct Option: C
Explanation:

Chain pump system consists of two large wheels tied at both ends with a chain where the wheel is rotated using the chain and water is filled in the buckets and poured off into the field. It is mostly practised in  Europe, China etc. 

So, the correct option is 'Both A and B'.

The most common type of belt is made up of

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

  1. Rubber

  2. Kirmich

  3. Leather

  4. Cotton thread

Show answer
Correct Option: A
Explanation:

Belts made of rubber are most common because rubber is more flexible and is less expensive than leather. Because of its elasticity, toughness and smooth nature, it is mostly used. These are also made of natural and synthetic rubber. So, the correct option is 'Rubber'.

In which implement, bullocks are not used for lifting water? 

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

  1. Buldev Balti

  2. Charsa

  3. Egyptian screw

  4. Rahat (Persian wheel)

Show answer
Correct Option: C
Explanation:

Egyptian screw is an implement which is used for moving or lifting up of water. It was invented by Archimedes. Water from this tool is pumped by turning up a screw it consists of a circular pipe enclosing a helix. 

So the correct option is 'Egyptian screw'.