Aeroflex Industries Production Engineer Interview Questions and Answers

Wire manufacturing processes include drawing, annealing, stranding, and insulation.

• Wire manufacturing starts with the drawing process, where a metal rod is pulled through a series of dies to reduce its diameter.

• Annealing is then performed to relieve stress and improve the wire's ductility.

• Stranding involves twisting multiple wires together to form a cable or conductor.

• Insulation is applied to protect the wire and provi...read more

Otto cycle is used in gasoline engines and Diesel cycle is used in diesel engines.

• Otto cycle is a constant volume cycle used in gasoline engines.

• Diesel cycle is a constant pressure cycle used in diesel engines.

• Otto cycle has a higher compression ratio compared to Diesel cycle.

• Otto cycle has a spark plug for ignition while Diesel cycle uses compression ignition.

• Both cycles involve four processes: intake, compression, po

Stress is the force applied to a material, while strain is the resulting deformation or change in shape.

• Stress is a measure of the internal forces within a material, while strain is the measure of the deformation or change in shape.

• Stress is typically measured in units of force per unit area (such as N/m^2 or Pa), while strain is a dimensionless quantity.

• Stress can cause a material to deform or break, while strain is t...read more

There are two main types of Ramming mass: acidic and basic.

• Acidic Ramming Mass: used for lining induction furnaces and arc furnaces.

• Basic Ramming Mass: used for lining steel ladles and EAF (Electric Arc Furnace).

There are several types of steel, each with different properties and uses. The percentage of steel in a particular alloy can vary.

• Types of steel include carbon steel, alloy steel, stainless steel, tool steel, and high-speed steel.

• The percentage of steel in an alloy can range from as low as 0.2% to as high as 2.1% depending on the type of steel and its intended use.

• For example, carbon steel typically contains around 0.2...read more

First law states energy cannot be created or destroyed, second law states entropy always increases, third law states entropy approaches zero at absolute zero.

• First Law: Energy cannot be created or destroyed, only transferred or converted. Example: A car engine converts fuel into mechanical energy.

• Second Law: Entropy of an isolated system always increases over time. Example: Heat always flows from hot to cold objects.

• Th...read more

Different types of steel bridges include truss bridges, arch bridges, suspension bridges, and cable-stayed bridges.

• Truss bridges: made of interconnected triangles for support (e.g. Golden Gate Bridge)

• Arch bridges: curved structure supporting weight (e.g. Sydney Harbour Bridge)

• Suspension bridges: main cables supporting the bridge deck (e.g. Akashi Kaikyo Bridge)

• Cable-stayed bridges: cables directly connected to the brid

Different axle capacities in open web bridges vary depending on the design and materials used.

• Axle capacities can range from 10 tons to over 100 tons depending on the bridge design and intended use.

• Common axle capacities for open web bridges include 20 tons, 40 tons, and 80 tons.

• Factors such as bridge span, width, and material strength influence the axle capacity of a bridge.

Different IS codes followed for fabricating open web girders include IS 800:2007, IS 806:1968, and IS 11384:1985.

• IS 800:2007 - General construction in steel - Code of practice

• IS 806:1968 - Code of practice for use of steel tubes in general building construction

• IS 11384:1985 - Code of practice for composite construction

Methods of blasting or cleaning scales of raw material include mechanical cleaning, chemical cleaning, and thermal cleaning.

• Mechanical cleaning involves using abrasive materials like sand or steel shot to physically remove scales from the raw material surface.

• Chemical cleaning utilizes acids or other chemicals to dissolve and remove scales from the raw material.

• Thermal cleaning involves using heat to burn off or melt a...read more

Temperature control is crucial for efficient and safe production processes.

• Temperature control systems must be in place and regularly maintained.

• Monitoring of temperature levels should be done regularly to ensure consistency.

• Proper insulation and ventilation should be considered to prevent temperature fluctuations.

• Temperature alarms and emergency shutdown systems should be installed as a safety measure.

• Examples of temp...read more

Iron carbon diagram shows the phases of iron and carbon at different temperatures.

• Iron carbon diagram is a graphical representation of the phases of iron and carbon at different temperatures.

• It helps in understanding the microstructure of steel and cast iron.

• The diagram shows the phases such as austenite, ferrite, cementite, and pearlite.

• It is used in heat treatment processes to control the properties of steel.