Question

The wheel in rahat irrigation system is turned by
(a)Oxen
(b)Cows
(c)Humans
(d)Both A and B

Answer 1

Hint: The most common ruminant found everywhere in India. This is an herbivorous animal having four stomachs. This animal gives us milk to make different dairy products like curd, cheese, paneer, ice cream etc.

Complete answer:
Rahat is a system of irrigation where it is followed by the villagers and by this method no water is wasted. It is a system like chain pump but instead of a pump a bull is used. It is also known as Persian Wheel.
In rehat, an animal is used to rotate an axle. This axil is connected to gears,and those gears are connected with a circle object. The circular object is present near the water and another near the land surface. Chains with pots are connected with the chain. When the animal rotates the gears and the circular object rotates and makes the chain with the pots rotate.The wheel is rotated by oxen, buffalo or cows to get the water out of the well and then spread out over the crops.

Additional Information: Plants need plenty of water to grow. Farmers need to supply water to crops at regular intervals. This practice is called irrigation. Different types of crop require different amounts and frequency of irrigation. Kharif crops need more water than rabi crops.
Modern Methods of Irrigation:
-Sprinkler System: The sprinkler system is composed of a series of pipelines. Vertical sprinklers are fitted at suitable gaps on the pipes. Water is pushed through the pipes with the help of a pump. The nozzle of the sprinkler keeps on rotating. It results in a jet of water being sprinkled on plants. Sprinkler system is ideal for irrigation on uneven land.
-Drip Irrigation: In this system, pipes are laid near the base and along the queue of plants. The pipes have small holes at frequent gaps. The holes facilitate gradual dripping of water on the base of plants. This method is ideal for areas which are suffering from shortage of water.

So, the correct answer is, ‘Both A and B.’

Note: Lever Systems
-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 mentioned here.
-Traditional irrigation systems allow farmers or hobbyists to keep their plants and soil moist, which creates the right atmosphere for the growth of healthy plants.