20+ Subros Interview Questions and Answers for Freshers

Engineering is the application of scientific and mathematical principles to design and create solutions to real-world problems.

• Engineering involves using scientific and mathematical knowledge to solve practical problems.

• Engineers design and create solutions that improve the quality of life and make tasks more efficient.

• Engineering encompasses various disciplines such as civil, mechanical, electrical, and software engineering.

• Engineers apply their knowledge to develop new tech...read more

There are different types of files and fulfilling customer requirements involves understanding their needs.

• There are different types of files such as text, image, audio, video, executable, etc.

• Understanding customer requirements involves active listening and asking questions to clarify their needs.

• We can fulfill customer requirements by providing quality service, timely delivery, and addressing any concerns or issues they may have.

• Examples of fulfilling customer requirements ...read more

Yes, entropy can be measured using instruments such as calorimeters and thermometers.

• Entropy can be measured indirectly through changes in temperature or heat flow.

• Calorimeters can measure the heat released or absorbed during a reaction, which can be used to calculate entropy.

• Thermometers can measure changes in temperature, which can also be used to calculate entropy.

• Entropy can also be estimated using statistical methods.

• The unit of entropy is joules per kelvin (J/K).

To increase profits, focus on cost reduction, improving efficiency, increasing sales, and exploring new markets.

• Identify and reduce unnecessary costs

• Streamline supply chain processes to improve efficiency

• Implement lean manufacturing techniques to minimize waste

• Optimize inventory management to reduce carrying costs

• Negotiate better deals with suppliers to lower procurement costs

• Improve product quality and customer satisfaction to increase sales

• Develop and execute effective mark...read more

The main components of AC cycle are compressor, condenser, expansion valve and evaporator.

• Compressor compresses the refrigerant gas and raises its temperature.

• Condenser cools down the refrigerant gas and converts it into a high-pressure liquid.

• Expansion valve reduces the pressure of the liquid refrigerant and converts it into a low-pressure liquid.

• Evaporator absorbs heat from the surrounding and converts the low-pressure liquid into a low-pressure gas.

• The cycle repeats as the...read more

A saturation curve shows the relationship between the concentration of a substance and its ability to bind to a receptor.

• The curve starts at zero binding when there is no substance present.

• As the concentration of the substance increases, more receptors become occupied and the binding increases.

• Eventually, all the receptors become occupied and the binding reaches a maximum, which is the saturation point.

• Further increases in substance concentration do not increase binding, as a...read more

PPM can be found by dividing the weight of solute by the weight of solution and multiplying by 10^6.

• Determine the weight of the solute and the weight of the solution.

• Divide the weight of the solute by the weight of the solution.

• Multiply the result by 10^6 to get the PPM value.

• Example: If 1 gram of solute is dissolved in 1 million grams of solution, the PPM would be 1.

• PPM stands for parts per million and is used to express the concentration of a solution.

The most commonly used refrigerant at this time is R-410A, which is a hydrofluorocarbon (HFC) blend.

• R-410A is a popular choice due to its high energy efficiency and environmental friendliness.

• It is commonly used in air conditioning systems and heat pumps.

• R-410A is a hydrofluorocarbon (HFC) blend, which means it does not contain chlorine and is less harmful to the ozone layer compared to older refrigerants like R-22.

The tiers are black to indicate the level of expertise or access in a hierarchical system.

• Black is often associated with power, authority, and sophistication, making it a suitable choice for tiers in a hierarchical structure.

• Using different colors for tiers may cause confusion or misinterpretation of the hierarchy.

• Black is a neutral color that can easily be paired with other colors for design purposes.

• Consistency in color coding helps in maintaining clarity and organization w...read more

The least count of a vernier caliper is 0.02 mm and the least count of a screw gauge is 0.01 mm.

• Vernier caliper least count: 0.02 mm

• Screw gauge least count: 0.01 mm

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

• Compressors are commonly used in various industries such as manufacturing, HVAC, and refrigeration.

• They work by taking in a gas at a low pressure and volume, and then compressing it to a higher pressure and lower volume.

• The compressed gas can then be used for various applications such as powering pneumatic tools or refrigeration systems.

• Examples of compressors include reciprocating...read more

Heat is the transfer of energy from one body to another due to a temperature difference. Entropy is a measure of disorder or randomness.

• Heat is a form of energy that flows from hotter to cooler objects

• Entropy is a measure of the number of ways in which the energy of a system can be distributed among its particles

• Heat can be transferred through conduction, convection, and radiation

• Entropy always increases in a closed system

• Examples of heat include the warmth of the sun, a hot ...read more

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

AC cycle works by using a refrigerant to absorb heat from inside a space and release it outside, creating a cooling effect.

• AC cycle starts with the refrigerant absorbing heat from inside the space, cooling the air.

• The refrigerant then moves to the compressor where it is pressurized and heated.

• Next, the hot refrigerant moves to the condenser coil where it releases heat to the outside air.

• The refrigerant then goes through an expansion valve, reducing its pressure and temperatur...read more

Refrigerate means to cool or preserve food or other items at a low temperature.

• Refrigerate is the process of storing food or other items in a refrigerator or other cold storage to keep them fresh and prevent spoilage.

• Examples of items that need to be refrigerated include dairy products, meats, fruits, and vegetables.

• Refrigeration slows down the growth of bacteria and other microorganisms that can cause food to spoil.

• It is important to follow proper refrigeration guidelines to...read more

Refrigerant is a substance used in cooling systems to absorb and release heat, enabling the transfer of heat from one location to another.

• Refrigerants are commonly used in air conditioning systems, refrigerators, and freezers.

• They undergo a phase change from a gas to a liquid and back again, allowing them to absorb and release heat.

• Common refrigerants include hydrofluorocarbons (HFCs), chlorofluorocarbons (CFCs), and hydrochlorofluorocarbons (HCFCs).

The first film of an actor is often a significant milestone in their career.

• The first film of an actor is usually the one that introduces them to the audience and sets the tone for their future work.

• It can be a breakthrough role that propels them to stardom or a small part that leads to bigger opportunities.

• Examples: Leonardo DiCaprio's first film was 'Critters 3', Meryl Streep's first film was 'Julia'.

Troubleshooting casting defects and process

• Identify the type of defect and its root cause

• Analyze process parameters and make necessary adjustments

• Ensure proper maintenance of equipment and molds

• Train and educate operators on best practices

• Implement quality control measures to prevent defects

• Collaborate with engineering and production teams to improve processes

R-134a is a commonly used refrigerant in air conditioning and refrigeration systems.

• R-134a is a hydrofluorocarbon (HFC) refrigerant.

• It has a low global warming potential (GWP) and ozone depletion potential (ODP).

• R-134a is non-toxic and non-flammable.

• It is used in automotive air conditioning systems, commercial refrigeration, and heat pumps.

• Other refrigerants include R-410A, R-22, and R-404A.

An internal combustion engine (IC engine) is a type of engine that generates power by burning fuel inside the engine.

• IC engines are commonly used in vehicles, such as cars, motorcycles, and trucks.

• There are two main types of IC engines: spark-ignition engines (petrol engines) and compression-ignition engines (diesel engines).

• IC engines work by converting the chemical energy of fuel into mechanical energy through combustion.

• The combustion process in an IC engine involves a ser...read more

AC cycle refers to the alternating current cycle, which is the flow of electric current that periodically reverses direction.

• AC cycle is the flow of electric current that changes direction periodically.

• It is commonly used in household electrical systems to power appliances.

• AC cycles typically have a frequency of 50 or 60 Hz, depending on the region.

• The AC cycle consists of two half cycles - positive and negative.

• AC cycles are represented by sine waves on an oscilloscope.

I have experience working as a designer on AutoCAD and CATIA V5.

• Proficient in creating 2D and 3D models using AutoCAD and CATIA V5

• Knowledge of drafting, modeling, and assembly design

• Experience in creating technical drawings and blueprints

• Ability to collaborate with engineers and other team members to develop designs

• Familiarity with industry standards and best practices in design

CNC machines can be classified based on the number of axes they operate on.

• CNC machines can be classified as 2-axis, 3-axis, 4-axis, 5-axis, or multi-axis machines.

• The number of axes determines the complexity and flexibility of the machine.

• For example, a 2-axis CNC machine can move in two directions (X and Y), while a 5-axis machine can move in five directions (X, Y, Z, A, and B).

A synchronous motor is a type of AC motor in which the rotation of the shaft is synchronized with the frequency of the supply current.

• Synchronous motors operate at a constant speed determined by the frequency of the electrical supply.

• They are commonly used in applications where precise speed control is required, such as in industrial processes or power generation.

• Synchronous motors are more efficient than induction motors at higher speeds.

• Examples of synchronous motors includ...read more