50+ DET Interview Questions and Answers

The interview covered topics such as differences between petrol and diesel engines, laws of thermodynamics, types of fluids, and DC motor working.

• Petrol engines use spark plugs to ignite fuel, while diesel engines use compression to ignite fuel

• The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted

• Fluids can be classified as liquids, gases, or plasmas

• My hobbies include reading, hiking, and playing guitar

• DC motors conver...read more

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

IC engine is an internal combustion engine that generates power by burning fuel inside the engine. 2 stroke engine completes a power cycle in 2 strokes of the piston, while 4 stroke engine completes it in 4 strokes.

• IC engine is an internal combustion engine that generates power by burning fuel inside the engine.

• 2 stroke engine completes a power cycle in 2 strokes of the piston, while 4 stroke engine completes it in 4 strokes.

• In a 2 stroke engine, the intake, compression, powe...read more

The time required to employ the parment depends on various factors such as the recruitment process, availability of candidates, and the complexity of the position.

• The duration can vary greatly depending on the organization's hiring process and the specific requirements of the role.

• Factors such as the number of interviews, background checks, and reference checks can impact the timeline.

• If the position requires specialized skills or qualifications, it may take longer to find a ...read more

Stress is the force applied to a material, while strain is the resulting deformation. They are measured in units of force per unit area and are important in engineering and materials science.

• Stress is the force applied to a material per unit area

• Strain is the resulting deformation or change in shape of the material

• Stress is typically measured in units like Pascals (Pa) or pounds per square inch (psi)

• Strain is a dimensionless quantity, often expressed as a percentage

• Standards ...read more

Petrol engines ignite fuel with a spark, while diesel engines use compression for ignition, leading to efficiency and performance differences.

• Ignition Method: Petrol engines use spark plugs; diesel engines rely on compression ignition.

• Fuel Efficiency: Diesel engines are generally more fuel-efficient than petrol engines.

• Power Output: Diesel engines produce more torque, making them suitable for heavy-duty applications like trucks.

• Emissions: Petrol engines typically emit more CO...read more

An air compressor is a device that converts power into potential energy stored in pressurized air.

• Air compressors work by drawing in air and compressing it to increase pressure.

• They are commonly used in various applications, such as powering pneumatic tools.

• Examples include portable air compressors for inflating tires and industrial compressors for manufacturing.

• Compressors can be categorized into positive displacement and dynamic types.

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

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).

Force is a push or pull on an object, while torque is a rotational force around an axis.

• Force is a vector quantity, measured in newtons (N), acting in a straight line.

• Torque is also a vector quantity, measured in newton-meters (Nm), and causes rotation.

• Example of force: Pushing a car to move it forward.

• Example of torque: Using a wrench to tighten a bolt, where the force applied creates rotation.

Torrent Power is an Indian power company that generates and distributes electricity.

• Torrent Power is one of the leading power companies in India.

• It generates and distributes electricity in various states of India.

• The company has a strong presence in Gujarat, Maharashtra, and Uttar Pradesh.

• Torrent Power has a total generation capacity of 3,879 MW.

• It has won several awards for its performance and contribution to the power sector.

Preventive maintenance involves regular inspections, adjustments, cleaning, and replacement of parts to prevent breakdowns and prolong equipment life.

• Regularly inspecting equipment for signs of wear and tear

• Performing routine cleaning and lubrication

• Replacing worn out parts before they fail

• Scheduling regular maintenance checks based on manufacturer recommendations

• Keeping detailed records of maintenance activities

• Implementing predictive maintenance techniques to anticipate iss...read more

The weak point refers to a vulnerable or susceptible area or aspect.

• A weak point can be a physical or mental limitation.

• It can also refer to a flaw or vulnerability in a system or process.

• Examples of weak points include a person's lack of confidence, a software bug, or a weak link in a chain.

• Identifying and addressing weak points is important for improvement and problem-solving.

Transfarma is not a known term. No answer available.

• N/A

Brakes are devices that slow down or stop motion, crucial for vehicle safety and control.

• Disc Brakes: Use a metal disc and caliper; common in cars and motorcycles.

• Drum Brakes: Use a drum and brake shoes; often found in older vehicles.

• Anti-lock Braking System (ABS): Prevents wheel lock-up during hard braking.

• Regenerative Brakes: Convert kinetic energy into electrical energy; used in electric vehicles.

• Air Brakes: Utilize compressed air; commonly used in large trucks and buses.

5c of engine refers to the five components that make up an engine's combustion process.

• The five components are compression, combustion, cooling, control, and lubrication.

• Compression refers to the process of compressing the air-fuel mixture before ignition.

• Combustion is the process of burning the compressed air-fuel mixture to produce energy.

• Cooling is necessary to prevent the engine from overheating during the combustion process.

• Control refers to the various sensors and syste...read more

Mortar is a mixture of cement, sand, and water used to bind building blocks. There are different types of mortar based on their composition and application.

• Types of mortar include cement mortar, lime mortar, and gypsum mortar

• Cement mortar is commonly used for construction and is made of cement, sand, and water

• Lime mortar is used for historic preservation and is made of lime, sand, and water

• Gypsum mortar is used for plastering and is made of gypsum, sand, and water

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 lathe is a machine tool used for shaping and machining various materials.

• A lathe rotates a workpiece on its axis, allowing for cutting, drilling, sanding, and turning operations.

• It consists of a bed, headstock, tailstock, and a tool post.

• Common types of lathes include engine lathes, turret lathes, and CNC lathes.

• Lathes are used in metalworking, woodworking, and glassworking industries.

• Examples of lathe operations include turning a cylindrical shape, creating threads, and fa...read more

Quality is a measure of excellence or superiority in a product, service, or process.

• Quality refers to the degree to which something meets or exceeds expectations.

• It involves characteristics such as reliability, durability, accuracy, and effectiveness.

• Quality can be subjective and vary based on individual preferences and requirements.

• Examples of quality include a well-built car that doesn't break down frequently, a delicious and consistent tasting food product, or a software t...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

Diesel engines use compression ignition, while petrol engines use spark ignition, leading to differences in efficiency and performance.

• Diesel engines are generally more fuel-efficient than petrol engines due to higher compression ratios.

• Petrol engines typically provide higher power output and quicker acceleration compared to diesel engines.

• Diesel engines produce more torque at lower RPMs, making them suitable for heavy-duty applications like trucks.

• Petrol engines are quieter ...read more

Gas engines use spark plugs for ignition, while diesel engines rely on compression for combustion, leading to efficiency differences.

• Gas engines use spark ignition; diesel engines use compression ignition.

• Diesel engines are generally more fuel-efficient than gas engines.

• Gas engines typically produce more horsepower, while diesel engines excel in torque.

• Examples: Gas engines are common in cars; diesel engines are often used in trucks and heavy machinery.

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

Quality refers to the standard or degree of excellence of something.

• Quality is a measure of how well something meets its intended purpose or specifications.

• There are different types of quality, such as product quality, service quality, and process quality.

• Product quality refers to the characteristics and features of a product that determine its ability to satisfy customer needs.

• Service quality refers to the level of customer service provided by a company or organization.

• Proce...read more