40+ Kirloskar Pneumatic Interview Questions and Answers

Yes, it is possible to assemble Kirloskar airend in different make of machine with certain modifications.

• Modifications may be required to fit the airend properly in the machine.

• The performance of the machine may be affected by the compatibility of the airend.

• The warranty of the machine may be voided if the airend is not recommended by the manufacturer.

• Examples of compatible machines include those from Atlas Copco, Ingersoll Rand, and Sullair.

VFD stands for Variable Frequency Drive and it is used in compressors to control the speed of the motor and optimize energy consumption.

• VFD controls the frequency and voltage supplied to the motor, allowing it to operate at different speeds.

• By adjusting the speed of the motor, VFD can match the compressor's output to the demand, resulting in energy savings.

• VFD can also provide soft start and stop functions, reducing mechanical stress on the compressor.

• References to take to wo...read more

The gap between the airend and housing and screw elements should be minimal to ensure efficient operation.

• The gap is typically maintained within a few micrometers to prevent air leakage.

• A smaller gap ensures better compression and reduces energy losses.

• Proper alignment and precision manufacturing are crucial to achieve the desired gap.

• Examples of gap specifications can vary depending on the specific compressor model and manufacturer.

• Regular maintenance and inspection are nece...read more

Yes, I have handled SPM (Sales Performance Management).

• SPM is used to track and manage the performance of sales teams.

• It helps in setting sales targets, monitoring progress, and incentivizing sales representatives.

• SPM software provides tools for sales forecasting, territory management, and commission calculations.

• By using SPM, organizations can improve sales effectiveness and drive revenue growth.

• Example: I have used SPM to analyze sales data, identify top performers, and cre...read more

Pre-commissioning visit requires thorough planning and execution to ensure smooth commissioning of the project.

• Review project specifications and requirements

• Inspect equipment and systems for compliance

• Verify installation and alignment of equipment

• Perform functional testing of equipment and systems

• Ensure safety measures are in place

• Train personnel on equipment operation and maintenance

• Prepare commissioning report

Warranty management involves handling customer claims for repairs or replacements of products covered under warranty.

• Maintaining records of warranty claims and repairs

• Coordinating with service centers for repairs or replacements

• Communicating with customers regarding the status of their claims

• Ensuring compliance with warranty policies and procedures

• Analyzing warranty data to identify trends and areas for improvement

My target for spares sales and service for the current year is to increase it by 15% compared to the previous year.

• My target is to increase spares sales and service by 15% compared to the previous year

• I plan to achieve this by implementing targeted marketing strategies and improving customer service

• I will also focus on building strong relationships with existing customers and expanding our customer base

• For example, I will introduce loyalty programs and offer discounts to cust...read more

Inventory management involves tracking and controlling the flow of goods to ensure optimal levels and minimize costs.

• Inventory management involves monitoring stock levels, tracking sales and demand patterns, and placing orders to replenish inventory.

• Effective inventory management helps prevent stockouts and overstocking, reducing costs and improving customer satisfaction.

• Inventory turn, also known as inventory turnover, measures how quickly a company sells and replaces its in...read more

To check vibration of airend, use a vibration meter at specific points. Standard varies by manufacturer. Allowable vibration value depends on machine type and application.

• Use a vibration meter to check vibration of airend

• Check vibration at specific points as per manufacturer's instructions

• Standard for allowable vibration varies by manufacturer

• Allowable vibration value depends on machine type and application

During AMC service of air compressor, we perform routine maintenance and inspections to ensure optimal performance and prevent breakdowns.

• Check and replace air filters

• Inspect and clean cooling system

• Check and adjust belts and pulleys

• Inspect and replace worn out parts

• Check and adjust oil levels

• Perform performance tests

• Provide necessary repairs and replacements

• Ensure compliance with safety regulations

Power calculation in air compressors involves determining the input power and the output power.

• The input power is the electrical power required to run the air compressor.

• The output power is the mechanical power produced by the air compressor.

• The power calculation can be done using the formula: Power = Pressure x Flow Rate / Efficiency.

• Pressure is measured in pounds per square inch (psi) or bar.

• Flow rate is measured in cubic feet per minute (cfm) or liters per minute (lpm).

• Eff...read more

I plan inventory based on demand forecasting, lead time, and safety stock.

• Analyze historical sales data and market trends to forecast demand

• Consider lead time for procurement and delivery of machines

• Maintain safety stock to avoid stockouts and meet unexpected demand

• Collaborate with sales team to understand customer requirements and plan inventory accordingly

• Use inventory management software to track inventory levels and optimize replenishment

• Regularly review and adjust invent...read more

Different measuring instruments and their least count, along with hands-on experience.

• Vernier caliper - 0.02 mm

• Micrometer screw gauge - 0.01 mm

• Dial gauge - 0.01 mm

• Height gauge - 0.02 mm

• Thread pitch gauge - 0.01 mm

• Using instruments requires proper calibration and handling

• Hands-on experience can be gained through practice and training

I will implement a robust inventory management system with real-time tracking and forecasting.

• Implement a centralized inventory management system

• Track inventory levels in real-time

• Forecast demand and adjust inventory levels accordingly

• Maintain good relationships with suppliers to ensure timely delivery

• Regularly review inventory data to identify trends and make informed decisions

• Implement a system for returns and exchanges

• Train staff on inventory management best practices

The compressor installation and commissioning procedure involves several steps to ensure proper functioning and efficiency.

• Prepare the site for installation by ensuring a suitable foundation and proper ventilation.

• Position the compressor unit and connect it to the power supply.

• Install the necessary piping and connections for air intake and discharge.

• Check and adjust the oil level and ensure proper lubrication.

• Perform a thorough inspection of all components and connections for...read more

Commissioning and installation of screw air compressor involves several steps.

• Inspect the site and ensure proper foundation and ventilation

• Check electrical connections and ensure proper grounding

• Install air and oil piping and connect to the compressor

• Fill the oil and coolant and check for leaks

• Start the compressor and check for proper operation

• Adjust the pressure and perform a load test

• Train the operators on proper usage and maintenance

• Provide a maintenance schedule and check...read more

The key elements of airend are rotors, bearings, seals, and housing. The gap between screw elements should be 0.1-0.3mm.

• Airend consists of rotors, bearings, seals, and housing.

• Rotors are the main components that compress the air.

• Bearings support the rotors and reduce friction.

• Seals prevent air leakage and maintain efficiency.

• Housing encloses the airend and provides structural support.

• The gap between screw elements should be 0.1-0.3mm for optimal performance.

Check refrigerant level, condenser coil, fan motor, and thermostat.

• Check refrigerant level and add if necessary.

• Clean condenser coil and ensure proper airflow.

• Check fan motor for proper functioning.

• Check thermostat and adjust if necessary.

The check points to resolve the issue of a compressor tripping with high ampere.

• Check the electrical connections for loose or damaged wires

• Inspect the compressor motor for any signs of overheating or damage

• Verify that the compressor is receiving the correct voltage

• Check the refrigerant levels and ensure they are within the specified range

• Inspect the condenser coils for any blockages or dirt buildup

• Check the compressor's overload protection device

• Inspect the compressor's start...read more

CSI stands for Customer Satisfaction Index. It is a measure of how satisfied customers are with a product or service.

• CSI is a metric used to assess customer satisfaction.

• It helps businesses understand how well they are meeting customer expectations.

• CSI can be calculated by conducting surveys or using feedback forms.

• The formula for calculating CSI is: (Number of satisfied customers / Total number of customers) x 100.

• For example, if a company has 500 customers and 400 of them a...read more

Parameters to check during compressor testing

• Check the suction and discharge pressure

• Check the oil level and quality

• Check the motor amperage and voltage

• Check for any abnormal noise or vibration

• Check the refrigerant charge level

• Check the condenser and evaporator coils for cleanliness

• Check the compressor's temperature

• Check the compressor's oil pressure

• Check the compressor's discharge temperature

Welding defects include porosity, cracks, incomplete fusion, and distortion. Measures to reduce defects include proper training, inspection, and maintenance.

• Porosity: caused by gas entrapment, can be reduced by proper shielding gas and electrode selection

• Cracks: caused by high stress or improper cooling, can be reduced by preheating and controlling cooling rate

• Incomplete fusion: caused by insufficient heat or improper technique, can be reduced by proper technique and inspecti...read more

Check oil level, check for leaks, check for clogged filters, check for overheating

• Check the oil level in the compressor

• Check for any leaks in the system

• Check for clogged filters that may be restricting airflow

• Check for overheating of the compressor

• Inspect the pressure relief valve

• Check the pressure switch settings

• Inspect the cooling system

• Check the drive belt tension and condition

Check oil level, condenser cleanliness, refrigerant charge, and fan operation.

• Check the oil level in the compressor.

• Ensure the condenser is clean and free of debris.

• Check the refrigerant charge to ensure it is at the correct level.

• Verify that the fan is operating properly.

• Inspect the compressor for any signs of damage or wear.

Check for the cause of high current and take necessary actions to prevent damage to the compressor.

• Check for any blockages in the suction or discharge lines

• Check for any leaks in the system

• Check for proper lubrication of the compressor

• Check for proper voltage and amperage of the electrical supply

• Check for any mechanical issues with the compressor

• Take necessary actions to prevent damage to the compressor

Checkpoints before first start of machine

• Inspect machine for any damage or missing parts

• Ensure all safety guards and devices are in place and functioning properly

• Check oil and fluid levels and fill as necessary

• Verify proper electrical connections and grounding

• Perform a test run to ensure proper operation

• Train operators on safe and proper use of the machine

5S principles are Sort, Set in order, Shine, Standardize, and Sustain. Quality is important to ensure customer satisfaction and business success.

• Sort - eliminate unnecessary items to improve efficiency

• Set in order - organize items for easy access and productivity

• Shine - maintain cleanliness and prevent defects

• Standardize - establish consistent processes for quality control

• Sustain - continuously improve and maintain the 5S principles

• Quality is important to meet customer expect...read more

Compressor testing standards ensure the quality and performance of compressors.

• Compressor testing standards vary depending on the type of compressor and its intended use.

• Some common testing standards include ASME PTC 10 for centrifugal compressors and API 617 for axial and centrifugal compressors.

• Testing may include performance testing, vibration testing, and noise testing.

• Compressor manufacturers may also have their own internal testing standards.

• Testing is important to ensu...read more

Before starting an air compressor, certain checkpoints need to be followed.

• Check the oil level and add if necessary

• Check the air filter and clean or replace if necessary

• Check the belts and tighten if necessary

• Check the drain valve and ensure it is closed

• Check the pressure relief valve and ensure it is working properly

• Check the electrical connections and ensure they are secure

• Check the hoses and fittings for any leaks or damage

Vendor quotation selection involves comparing and evaluating criteria such as price, quality, delivery time, and vendor reputation.

• Compare vendor quotes based on price, quality, delivery time, and vendor reputation

• Evaluate vendor's past performance and customer feedback

• Consider vendor's financial stability and ability to meet production demands

• Assess vendor's technical capabilities and compliance with industry standards

• Negotiate terms and conditions to ensure a mutually benef...read more

Warranty claim procedure is the process of making a claim for repair or replacement of a product covered under warranty.

• The customer contacts the manufacturer or seller to initiate the claim process.

• The customer provides proof of purchase and details of the issue with the product.

• The manufacturer or seller may request additional information or inspection of the product.

• If the claim is approved, the manufacturer or seller will repair or replace the product.

• If the claim is deni...read more

Spatter is formed while welding due to the expulsion of molten metal from the weld pool.

• Spatter is caused by the high temperature of the welding process.

• It can be reduced by adjusting the welding parameters such as voltage, current, and wire feed speed.

• Using a welding gun with a shorter nozzle can also help reduce spatter.

• Spatter can cause defects in the weld and may need to be removed before finishing.

• It can also be a safety hazard if it lands on skin or clothing.

To calculate departmental objectives and targets, a thorough analysis of past performance and future projections is necessary.

• Review past performance data to identify areas of improvement

• Set specific, measurable, achievable, relevant, and time-bound (SMART) objectives

• Identify key performance indicators (KPIs) to track progress towards objectives

• Develop action plans to achieve objectives and targets

• Regularly monitor and evaluate progress towards objectives and adjust plans as ...read more

QA QC is crucial in ensuring the quality and reliability of mechanical engineering products and processes.

• QA QC helps identify and prevent defects in mechanical engineering products and processes.

• It ensures compliance with industry standards and regulations.

• It helps improve efficiency and reduce costs by identifying areas for improvement.

• Examples include testing and inspecting mechanical components, monitoring production processes, and conducting audits.

• QA QC also plays a cri...read more

GD&T stands for Geometric Dimensioning and Tolerancing.

• GD&T is a system used to define and communicate engineering tolerances.

• It provides a standardized language for specifying the form, size, orientation, and location of features on a part.

• GD&T uses symbols, feature control frames, and datums to convey the desired tolerances and requirements.

• It ensures that parts are manufactured and inspected consistently, leading to improved quality and interchangeability.

• For example, GD&T...read more

Landed cost for import items is calculated by adding the cost of goods, freight charges, insurance, customs duties, and other expenses incurred until the goods reach the final destination.

• Calculate the cost of goods including the purchase price, packaging, and any other related costs.

• Add the freight charges, which include the cost of shipping, handling, and any other transportation costs.

• Include the cost of insurance, which is usually a percentage of the total value of the go...read more

CNC turning is a machining process where a cutting tool is used to remove material from a rotating workpiece to create cylindrical parts.

• CNC turning is a subtractive manufacturing process used to create cylindrical parts.

• It involves a cutting tool that removes material from a rotating workpiece.

• The process is controlled by a computer program that dictates the toolpath and cutting parameters.

• CNC turning is commonly used in industries such as automotive, aerospace, and manufact...read more

There are several types of welding, including MIG, TIG, Stick, and Flux-Cored welding.

• MIG (Metal Inert Gas) welding uses a wire electrode and a shielding gas to join two pieces of metal together.

• TIG (Tungsten Inert Gas) welding uses a tungsten electrode and a shielding gas to create a precise and clean weld.

• Stick welding (also known as Shielded Metal Arc Welding) uses a consumable electrode coated in flux to create a strong bond between two pieces of metal.

• Flux-Cored welding ...read more

Types of fit include clearance fit, interference fit, and transition fit.

• Clearance fit: parts have a gap between them

• Interference fit: parts are pressed or forced together

• Transition fit: parts have both clearance and interference

• Examples: piston and cylinder, gears and shafts

Refrigeration is the process of removing heat from a substance or space to lower its temperature.

• Refrigeration is used in various industries such as food preservation, medicine, and air conditioning.

• It involves the use of refrigerants, which are substances that can absorb and release heat.

• The process of refrigeration involves compressing the refrigerant, condensing it into a liquid, and then expanding it to evaporate and absorb heat.

• Refrigeration systems can be classified int...read more

Refrigeration cycle is a thermodynamic cycle used in refrigerators and air conditioning systems to transfer heat from a low temperature reservoir to a high temperature reservoir.

• Consists of four main components: compressor, condenser, expansion valve, and evaporator

• Refrigerant is compressed in the compressor, then condensed in the condenser, expanded in the expansion valve, and evaporated in the evaporator

• Heat is absorbed from the space being cooled in the evaporator and rele...read more

Positive thinking is the mindset of focusing on the good and optimistic aspects of a situation.

• Positive thinking involves having a positive attitude and outlook on life.

• It is about finding the silver lining in difficult situations.

• Positive thinking helps in maintaining motivation and resilience.

• It involves reframing negative thoughts into positive ones.

• Positive thinking can lead to improved mental and physical well-being.

• Example: Instead of dwelling on a mistake, focus on the...read more

Refrigeration theory involves the transfer of heat from a low temperature region to a high temperature region using a refrigerant.

• Refrigeration is based on the principles of thermodynamics, specifically the second law which states that heat naturally flows from a higher temperature to a lower temperature.

• The refrigeration cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The compressor compresses the refrigerant gas, raising its te...read more

Refrigeration cycle is a thermodynamic process used to remove heat from a low-temperature reservoir and transfer it to a high-temperature reservoir.

• The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The refrigerant is compressed by the compressor and then condensed in the condenser, releasing heat to the surroundings.

• The high-pressure liquid refrigerant then passes through the expansion valve, where it undergoes a pressure drop ...read more

Compressors are devices that increase the pressure of a gas or vapor.

• Positive displacement compressors

• Dynamic compressors

• Reciprocating compressors

• Centrifugal compressors

• Axial compressors

• Compressors can be powered by electric motors, gas turbines, or diesel engines.