20+ DET Interview Questions and Answers for Freshers

Major cost savings were achieved through process optimization and automation.

• Implemented automation of manual processes resulting in reduced labor costs

• Optimized supply chain management resulting in reduced inventory costs

• Negotiated better vendor contracts resulting in reduced procurement costs

The least count of a Bernier caliper is typically 0.02 mm.

• The least count refers to the smallest measurement that can be read on the instrument.

• Bernier calipers are commonly used in mechanical engineering and machining.

• The least count of a Bernier caliper can vary depending on the specific model and manufacturer.

• For example, some Bernier calipers may have a least count of 0.05 mm or 0.1 mm.

• To determine the least count of a specific Bernier caliper, consult the manufacturer's ...read more

Air is measured in units of pressure, volume, and density.

• Pressure is measured in units such as pascals (Pa), pounds per square inch (psi), or atmospheres (atm).

• Volume is measured in units such as cubic meters (m³), liters (L), or cubic feet (ft³).

• Density is measured in units such as kilograms per cubic meter (kg/m³) or pounds per cubic foot (lb/ft³).

Two-stroke and four-stroke engines differ in their operation and design.

• Two-stroke engines complete a power cycle in two strokes of the piston, while four-stroke engines complete it in four strokes.

• Two-stroke engines have a simpler design and are lighter, but they are less fuel-efficient and produce more pollution.

• Four-stroke engines are more complex but offer better fuel efficiency and lower emissions.

• Examples of two-stroke engines include chainsaws and motorcycles, while ca...read more

Transfarma is not a known term. No answer available.

• N/A

A VMC machine typically has 3 axis - X, Y, and Z.

• Most VMC machines have 3 axis - X, Y, and Z for movement in three dimensions

• Some advanced VMC machines may have additional axis for more complex operations

• The number of axis in a VMC machine can vary based on the specific model and manufacturer

IC engine is an internal combustion engine that converts chemical energy into mechanical energy.

• IC engine is classified based on the fuel used such as petrol engine, diesel engine, gas engine, etc.

• It is also classified based on the number of strokes in a cycle such as two-stroke engine and four-stroke engine.

• IC engines are further classified based on the arrangement of cylinders such as inline engine, V engine, flat engine, etc.

• Examples of IC engines include car engines, moto...read more

A braking system is a mechanism that slows or stops the motion of a vehicle or machine.

• Braking systems convert kinetic energy into heat energy to slow or stop a vehicle or machine.

• There are several types of braking systems, including disc brakes, drum brakes, and regenerative brakes.

• Disc brakes use calipers to squeeze brake pads against a rotor, while drum brakes use shoes that press against a rotating drum.

• Regenerative brakes use the vehicle's momentum to generate electricit...read more

5s,3r,4m is a code used in lean manufacturing for workplace organization and efficiency.

• 5s stands for Sort, Set in Order, Shine, Standardize, and Sustain

• 3r stands for Remove, Replace, and Repair

• 4m stands for Man, Machine, Material, and Method

• These codes are used to improve productivity, safety, and quality in the workplace

GD&T symbol stands for Geometric Dimensioning and Tolerancing symbol.

• GD&T symbols are used to specify the geometric requirements of a part or assembly.

• They include symbols for features such as flatness, perpendicularity, and concentricity.

• GD&T symbols help ensure that parts are manufactured to the correct specifications and fit together properly.

• Examples of GD&T symbols include the concentricity symbol (a circle within a circle) and the perpendicularity symbol (a square with ...read more

Measuring instruments must be accurate to ensure reliable results.

• Calibration is essential to ensure accuracy

• Regular maintenance and inspection can prevent errors

• Different instruments have different levels of accuracy

• Human error can also affect accuracy

• Examples: thermometer, blood pressure monitor, scale

Torque is a measure of the twisting force applied to an object.

• Torque is the product of force and the perpendicular distance from the axis of rotation.

• It causes objects to rotate around an axis.

• Torque is measured in units of force multiplied by distance, such as Newton-meters or foot-pounds.

• Examples of torque include turning a doorknob, tightening a bolt with a wrench, or pedaling a bicycle.

7QC stands for Seven Quality Control Tools, a set of techniques used for process improvement and problem-solving.

• The 7QC include: Pareto chart, cause-and-effect diagram, check sheet, control chart, histogram, scatter diagram, and flowchart.

• These tools help identify and analyze problems, determine root causes, and develop solutions.

• For example, a Pareto chart can be used to identify the most common causes of defects, while a control chart can monitor a process to ensure it sta...read more

Torque is a measure of the twisting force that causes rotation.

• Torque is a vector quantity that is calculated as the product of force and the distance from the axis of rotation.

• It is measured in units of Newton-meters (Nm) or pound-feet (lb-ft).

• Torque is important in many fields, including engineering, physics, and mechanics.

• Examples of torque include the force applied to a wrench to tighten a bolt, or the force applied to a car's wheels to make it move forward.

• Torque can be ...read more

Shot blasting is a surface treatment process used to clean, strengthen, or polish metal surfaces.

• Involves propelling abrasive materials at high speeds onto the surface being treated

• Removes rust, scale, and other contaminants from metal surfaces

• Used in industries like automotive, aerospace, and construction

• Examples include cleaning old paint off metal surfaces before repainting

5s concept is a workplace organization method focusing on efficiency and cleanliness.

• Sort - separate needed items from unneeded items

• Set in order - organize items in a logical manner

• Shine - clean and inspect work area regularly

• Standardize - establish consistent procedures and schedules

• Sustain - maintain and improve the system over time

There are various types of steel used in different applications.

• Carbon steel: contains carbon as the main alloying element

• Stainless steel: contains chromium for corrosion resistance

• Tool steel: used for making tools and dies

• Alloy steel: contains additional alloying elements for specific properties

• High-speed steel: used for cutting tools at high speeds

There are several types of welding techniques used in various industries.

• Arc welding: Uses an electric arc to create heat and join metals.

• MIG welding: Uses a wire electrode and a shielding gas to create a weld.

• TIG welding: Uses a tungsten electrode and a shielding gas to create a precise and high-quality weld.

• Spot welding: Joins two or more metal sheets by applying pressure and heat at specific points.

• Flux-cored arc welding: Similar to MIG welding but uses a tubular wire fill...read more

CNC stands for Computer Numerical Control and VCM stands for Virtual Cutting Machine.

• CNC is a technology that uses computers to control machine tools like lathes, mills, routers, and grinders.

• VCM is a software simulation of a cutting machine that allows users to test and optimize cutting processes before actual production.

• CNC machines are widely used in manufacturing for precision and automation, while VCM is used for virtual prototyping and process optimization.