Ilensys Technologies Interview Questions, Process, and Tips

Q1. What is the saturation temperature of refrigerant?
Ans. 
Saturation temperature of refrigerant is the temperature at which the refrigerant changes state from liquid to vapor at a given pressure.
• Saturation temperature is specific to each refrigerant and pressure level.

• It is an important parameter in the design and operation of refrigeration systems.

• For example, the saturation temperature of R-134a at 1 atm pressure is -26.1 degrees Celsius.
Answered by AI
Add your answer
Q2. What is subcooling and superheating and its important?
Ans. 
Subcooling and superheating are processes in which a substance is cooled or heated beyond its saturation point, respectively.
• Subcooling is the process of cooling a liquid below its saturation temperature without changing its phase.

• Superheating is the process of heating a vapor above its saturation temperature without changing its phase.

• Subcooling helps in increasing the efficiency of refrigeration systems by ensuring t...read more
Answered by AI
Add your answer
Q3. What is the main function of compressor in VCRS? what if we removed the compressor?
Ans. 
The main function of the compressor in VCRS is to compress the refrigerant gas, increasing its pressure and temperature. Without the compressor, the VCRS would not be able to cool the air effectively.
• Compressor compresses the refrigerant gas, increasing its pressure and temperature

• This high-pressure, high-temperature gas then flows through the condenser where it releases heat to the surrounding air

• If the compressor is ...read more
Answered by AI
Add your answer
Q4. What is viscosity and in which component of VCRS more amt of oil deposits?
Ans. 
Viscosity is a measure of a fluid's resistance to flow. More oil deposits are typically found in the evaporator component of VCRS.
• Viscosity is the measure of a fluid's resistance to flow. It determines how easily a fluid can move within a system.

• In VCRS (Vehicle Cabin Refrigeration System), more oil deposits are usually found in the evaporator component due to lower temperatures and slower flow rates.

• Higher viscosity o...read more
Answered by AI
Add your answer
Q5. What is GWP and ODP and what are the natural refrigerants?
Ans. 
GWP stands for Global Warming Potential, ODP stands for Ozone Depletion Potential. Natural refrigerants include CO2, ammonia, and hydrocarbons.
• GWP measures how much heat a greenhouse gas traps in the atmosphere over a specific time period compared to CO2

• ODP measures the potential for a substance to destroy the ozone layer compared to CFC-11

• Natural refrigerants like CO2, ammonia, and hydrocarbons have low GWP and zero O...read more
Answered by AI
Add your answer
Q6. What is the difference between VARS and VCRS?
Ans. 
VARS stands for Variable Air Volume Reheat System, while VCRS stands for Variable Chilled Water Reheat System.
• VARS controls the air flow rate and temperature to maintain comfort in a space, while VCRS controls the chilled water flow rate and temperature.

• VARS is commonly used in HVAC systems for commercial buildings, while VCRS is used in systems where precise temperature control is required.

• VARS can be more energy effi...read more
Answered by AI
Add your answer
Q7. Which one is having more thermal conductivity steel or copper?
Ans. 
Copper has higher thermal conductivity than steel.
• Copper has a thermal conductivity of around 400 W/mK, while steel typically has a thermal conductivity of around 50 W/mK.

• This means that copper is a much better conductor of heat compared to steel.

• Copper is commonly used in heat exchangers and electrical wiring due to its high thermal conductivity.

• Steel, on the other hand, is used in applications where strength and dura...read more
Answered by AI
Add your answer
Q8. What is Bernoullis principle? What is the relationship between Area and velocity?
Ans. 
Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
• Bernoulli's principle is a fundamental concept in fluid dynamics that states that as the speed of a fluid increases, its pressure decreases.

• The relationship between area and velocity is described by the equation A1V1 = A2V2, where A is the cross-sectional ...read more
Answered by AI
Add your answer
Q9. What is bending stress can you write a formula?
Ans. 
Bending stress is a type of stress that occurs when a material is subjected to bending.
• Bending stress is calculated using the formula: σ = M*c/I, where σ is the bending stress, M is the bending moment, c is the distance from the neutral axis to the outermost fiber, and I is the moment of inertia.

• Bending stress is commonly seen in beams, bridges, and other structures subjected to bending loads.

• The formula for bending st...read more
Answered by AI
Add your answer
Q10. What is chiller and how it works?
Ans. 
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
• Chillers are commonly used in air conditioning systems to cool buildings or industrial processes.

• They work by transferring heat from the liquid being chilled to a refrigerant, which then flows through a compressor and condenser to release the heat.

• The chilled liquid is then circulated through the system to a...read more
Answered by AI
Add your answer

Q1. Difference between passive component and active component
Ans. 
Passive components do not require an external power source to operate, while active components do require an external power source.
• Passive components include resistors, capacitors, inductors, and transformers.

• Active components include transistors, diodes, integrated circuits, and operational amplifiers.

• Passive components do not amplify or control the flow of electrical current, while active components do.

• Passive compon...read more
Answered by AI
Add your answer

Q1. Why are use draft angle in plastic?
Ans. 
Draft angles are used in plastic to facilitate easy ejection of the molded part from the mold.
• Draft angles help prevent the part from getting stuck in the mold during ejection

• They reduce friction between the part and the mold walls

• Draft angles improve the overall quality and consistency of the molded part

• Common draft angles range from 1 to 3 degrees, depending on the material and design
Answered by AI
Add your answer
Q2. What is shrinkage in plastic?
Ans. 
Shrinkage in plastic refers to the reduction in size of a plastic part during the cooling process after molding.
• Shrinkage occurs due to the cooling and solidification of the molten plastic material.

• It is important to account for shrinkage when designing molds for plastic parts.

• Factors affecting shrinkage include the type of plastic material, mold temperature, and cooling rate.

• Examples of plastics with high shrinkage in...read more
Answered by AI
Add your answer
Q3. How to prevent plastic defects, which design consideration method are used?
Ans. 
To prevent plastic defects, design engineers use methods such as mold flow analysis, material selection, gate design optimization, and part geometry considerations.
• Perform mold flow analysis to identify potential issues before production.

• Select the appropriate plastic material based on the requirements of the part.

• Optimize gate design to ensure proper filling and packing of the mold.

• Consider part geometry to minimize s...read more
Answered by AI
Add your answer
Q4. What is design library in solid Works?
Ans. 
Design library in SolidWorks is a feature that allows users to store and reuse commonly used parts, features, and assemblies.
• Design library provides easy access to standard components like screws, nuts, bolts, etc.

• Users can drag and drop items from the design library directly into their designs.

• It helps in saving time by reusing pre-designed components instead of creating them from scratch.

• Design library can be customi...read more
Answered by AI
Add your answer
Q5. Joining of 2 sheet metal process?
Ans. 
The joining of 2 sheet metal processes can be achieved through methods like welding, riveting, adhesive bonding, or clinching.
• Welding: involves melting the edges of the two sheet metals and fusing them together.

• Riveting: involves using metal fasteners to join the two sheet metals together.

• Adhesive bonding: involves using a strong adhesive to bond the two sheet metals together.

• Clinching: involves deforming the edges of
Answered by AI
Add your answer

Q1. Plastic defects?
Add your answer
Q2. Which method are used to plastic manufacturing?
Ans. 
Various methods such as injection molding, blow molding, extrusion, and rotational molding are used in plastic manufacturing.
• Injection molding: molten plastic is injected into a mold to create a part

• Blow molding: air pressure is used to expand molten plastic into a mold

• Extrusion: plastic is melted and forced through a die to create a continuous profile

• Rotational molding: powdered plastic is rotated in a mold until it c
Answered by AI
Add your answer
Q3. Plastic design consideration?
Ans. 
Plastic design consideration involves material selection, part geometry, manufacturability, and environmental impact.
• Material selection based on properties like strength, flexibility, and temperature resistance.

• Consideration of part geometry for moldability, assembly, and functionality.

• Ensuring manufacturability by designing for injection molding, extrusion, or other processes.

• Addressing environmental impact by choosin...read more
Answered by AI
Add your answer

It is all about Core questions

Regarding current affairs

Q1. Static load vs dynamic load
Ans. 
Static load is a constant force acting on a structure, while dynamic load is a varying force that changes with time.
• Static load remains constant over time, while dynamic load fluctuates.

• Examples of static load include the weight of a building or a bridge, while examples of dynamic load include wind or earthquake forces.

• Static load is easier to predict and design for, while dynamic load requires more complex analysis an...read more
Answered by AI
Add your answer
Q2. Dynamic load vs static load
Ans. 
Dynamic load is a moving or changing force applied to a structure, while static load is a stationary force.
• Dynamic load is a force that changes or moves over time, such as a moving vehicle on a bridge.

• Static load is a constant force applied to a structure, like the weight of a building on its foundation.

• Dynamic loads can cause vibrations and fatigue in structures, while static loads typically do not.

• Examples of dynamic...read more
Answered by AI
Add your answer