Silk production in India has a long and rich history dating back to ancient times. India was one of the first countries to start producing silk, and it remains a major producer of silk to this day. In fact, India is the second largest producer of silk in the world, after China.
Silk production in India involves the cultivation of silkworms and the extraction of silk from their cocoons. There are two main types of silk produced in India: mulberry silk and tasar silk. Mulberry silk is produced by domesticated silkworms that feed on the leaves of the mulberry tree. Tasar silk, on the other hand, is produced by silkworms that feed on the leaves of the Asan tree.
The process of silk production begins with the cultivation of silkworms. Silkworms are raised in a controlled environment, where they are fed a diet of mulberry leaves or Asan leaves, depending on the type of silk being produced. Once the silkworms have reached maturity, they spin cocoons around themselves using silk fibers produced in their glands.
After the cocoons have been spun, they are harvested and the silk is extracted. This process is called reeling. The silk fibers are extracted from the cocoons by soaking them in hot water, which causes the cocoons to unravel. The fibers are then cleaned, sorted, and twisted together to form a single strand of silk thread.
Silk production in India is a labor-intensive process, with most of the work being done by hand. The silk industry provides employment for a large number of people in India, particularly in rural areas where other job opportunities may be limited.
India's silk industry is an important contributor to the country's economy. In addition to being a major export commodity, silk is also used in the production of a wide range of products, including clothing, home furnishings, and industrial materials.
Overall, silk production in India is a vital and thriving industry that has played a significant role in the country's history and economy. It continues to be a major contributor to the country's economy and is an important source of employment for many people in India.
What is series in DC motor?
The magnetic material for the rotor is carefully chosen in order to produce the required magnetic field density. Now how to overcome this disadvantage? Separately Excited DC Motor In a separately excited DC motor, the motor has separate electrical supplies to the armature winding and field winding, which are electrically separate from each other. Application of Permanent Magnet DC Motor In this type of motor, there is no field winding around the stator instead a permanent magnet is used to produce magnetic flux. Since brushed motors tend to wear out rapidly, many electric vehicle applications use brushless motors due to their long life span and noiselessness. For this reason, comparatively greater current flows across the field coils, and it is designed accordingly as mentioned below. Hence, the DC series motor is suitable for the application in which high starting torque is required. But when load current and hence I a falls to a small value, speed becomes dangerously high.
6 Types of Motors and Their Use [Complete Details]
For applications that need constant and consistent speed with variable torque, DC motors are the ideal choice. The feedback position of the rotor from the sensors determines when to switch the current of the armature. When voltage is applied, current flows from The strength of these magnetic fields provides the armature shafts with the greatest amount of torque possible. Under N-pole, the armature conductors carry inward currents of +v e, and under S-pole, outward currents of -v e. This is the minimum value to be used, but a slightly higher value is also acceptable. By applying the voltage, power starts in these terminals and passes through armature and field windings.
Types of Electric Motors: Their Working & Applications [PDF]
British Rail 2500 kW, 25 kV a. DC Shunt Motor : Types of Motors In a D. However, speed varies widely between no load and full load. The position of the motor can be controlled by running and holding on to either of these stages without any position sensor for feedback, as long as the motor is correctly sized for the application with respect to torque and speed. The position of the shaft gives feedback to the control circuit and is in a closed loop. Its variable velocity model allows it to be beneficial for sewing machines, vacuum cleaners, traction applications, power tools, elevators, and much more.