RKV Secondary School Interview Questions and Answers

Primary steel melting operation chemistry control involves monitoring and adjusting the chemical composition of the steel during the melting process.

• Monitoring and adjusting the levels of carbon, manganese, silicon, sulfur, and phosphorus in the steel

• Ensuring proper temperature control to facilitate chemical reactions and maintain desired composition

• Using additives like ferroalloys to achieve specific alloying elements in the steel

• Regular sampling and testing of molten steel ...read more

Melting point is the temperature at which a solid turns into a liquid, while boiling point is the temperature at which a liquid turns into a gas. Regnault's law states that the vapor pressure of a liquid is directly proportional to its temperature.

• Melting point is the temperature at which a substance changes from solid to liquid state.

• Boiling point is the temperature at which a substance changes from liquid to gas state.

• Regnault's law states that the vapor pressure of a liqui...read more

Hydraulic symbols represent components in a hydraulic system. Types of valves include directional control valves, pressure control valves, and flow control valves. Types of pumps include gear pumps, vane pumps, and piston pumps.

• Hydraulic symbols are used to represent components like pumps, valves, actuators, and more in hydraulic systems.

• Types of valves include directional control valves, pressure control valves, and flow control valves.

• Examples of valves are check valves, re...read more

The iron-carbon diagram shows the relationship between carbon content and the properties of steel and iron.

• The diagram plots the percentage of carbon in the alloy against its temperature.

• It helps in understanding the behavior of steel and iron during heating and cooling.

• The diagram shows the different phases of steel and iron, such as ferrite, austenite, and pearlite.

• The diagram is used to determine the heat treatment required to achieve desired properties in steel and iron.

• F...read more

Least count is the smallest measurement that can be made using the measuring instrument.

• Least count is determined by the smallest division on the scale of the measuring instrument.

• It helps in determining the precision of the instrument.

• For example, if a ruler has smallest division of 1 mm, its least count is 1 mm.

• In vernier calipers, the least count is calculated as main scale division - vernier scale division.

Equilibrium point for engine is the point where the engine's power output equals the resistance forces.

• Equilibrium point is where the engine's power output matches the resistance forces acting on it.

• It is important for efficient operation of the engine.

• Example: In a car engine, the equilibrium point is reached when the engine power output matches the resistance from air drag and friction.

• At equilibrium point, the engine is neither accelerating nor decelerating.