Tag: science & technology

The bed of a machine tool is typically made of Cast Iron (C.I.) because of its excellent vibration damping properties, high compressive strength, and ability to provide a rigid base. Mild steel, medium carbon steel, and alloy steel lack the vibration damping characteristics needed for precision machining.

Equivalent evaporation is the standard parameter for comparing boiler capacities, defined as the quantity of steam produced per kg of fuel burned from and at 100°C. This normalizes for different boiler pressures and temperatures. kg/hr, steam pressure, and equivalent steam rate are not the standard comparison basis.

Mandrels are cylindrical tools used to hold hollow workpieces during machining operations like turning, grinding, or drilling. They provide internal support to prevent deformation of thin-walled or hollow pieces.

Throttle governing is commonly used in steam turbines where steam flow is controlled by throttle valves. This method regulates the power output by varying the steam quantity admitted to the turbine, making it efficient for power plant operations.

Hertz is the SI unit of frequency, defined as one cycle per second. It measures the number of oscillations or cycles a wave completes in one second, commonly used for sound waves, electromagnetic waves, and alternating current.

Weber is the SI unit of magnetic flux, representing the quantity of magnetic field passing through a given area. One weber equals one volt-second and is used to measure the total magnetic field in a region.

Tesla is the SI unit of magnetic field intensity (magnetic flux density), representing one weber per square meter. It measures the strength of a magnetic field at a specific point.

Newton is the SI unit of force, defined as the force required to accelerate a mass of one kilogram at one meter per second squared. It is named after Isaac Newton in recognition of his work on classical mechanics.

Pascal is the SI unit of pressure, defined as one newton per square meter. It measures force applied per unit area and is named after Blaise Pascal, who contributed to fluid mechanics and pressure studies.

Coulomb is the SI unit of electric charge, representing the amount of charge transported in one second by a current of one ampere. It is named after Charles-Augustin de Coulomb, who studied electrostatic forces.