Q1: __________ property of steel increases by addition of large amount of silicon in it.

ANS:C - Magnetic

The magnetic property of a material refers to its ability to become magnetized or to interact with magnetic fields. Here's an explanation of the magnetic property in the context of steel with the addition of silicon:

1. Ferromagnetism: Ferromagnetism is a type of magnetism exhibited by certain materials, including steel, when exposed to an external magnetic field. In ferromagnetic materials, the magnetic moments of individual atoms align spontaneously in the same direction, creating a net magnetic moment. This alignment allows the material to become magnetized and exhibit magnetic properties.
2. Effect of Silicon Addition: When silicon is added to steel in significant amounts, it can enhance its ferromagnetic properties. Silicon steel, also known as electrical steel or transformer steel, is specifically engineered to have high magnetic permeability and low core loss. This makes it highly suitable for applications where magnetic properties are important, such as in electrical transformers, motors, generators, and other electromagnetic devices.
3. Applications: The magnetic properties of steel with added silicon are utilized in various electrical and electronic applications. For example, in electrical transformers, silicon steel cores provide efficient magnetic flux paths, minimizing energy losses due to hysteresis and eddy currents. Similarly, in electric motors and generators, silicon steel components help improve efficiency and performance by enhancing magnetic flux density and reducing losses.