10+ Johnson Matthey Interview Questions and Answers

Manufacturing process methods vary based on the product and industry, with no one-size-fits-all best method.

• Different manufacturing processes include additive manufacturing, subtractive manufacturing, and forming processes.

• The best method depends on factors such as the type of product, materials used, production volume, and desired quality.

• For example, additive manufacturing like 3D printing is ideal for rapid prototyping, while subtractive manufacturing like CNC machining is...read more

Cp and Cpk become equal when the process is centered on the target value.

• Cp and Cpk are statistical process control measures used to assess process capability.

• Cp measures the capability of a process to meet the specifications.

• Cpk measures the capability of a process to meet the specifications, taking into account the process mean and the variation.

• When the process is centered on the target value, the mean is equal to the target value, and Cp and Cpk become equal.

• This indicate...read more

Yes, I have experience working with a special process unit called a rotary kiln.

• Operated rotary kiln to produce cement clinker

• Monitored temperature and airflow to ensure proper combustion

• Performed regular maintenance and cleaning to prevent breakdowns

The nitric acid concentrate level should be monitored regularly to ensure proper functioning of the equipment and safety of the operators.

• Regularly check the nitric acid concentrate level in the storage tanks

• Maintain proper documentation of the concentration levels for quality control purposes

• Adjust the concentration level as needed to meet production requirements

• Train operators on how to safely handle and monitor nitric acid concentrate levels

Flow and process setup techniques are crucial for efficient value stream management.

• Value stream mapping to identify bottlenecks and waste

• Implementing pull systems to reduce inventory and lead time

• Standardizing work processes to improve quality and reduce variability

• Using visual management tools to monitor flow and identify issues

• Continuous improvement through Kaizen events and problem-solving

• Collaborating with cross-functional teams to optimize the value stream

2 stroke engines have power strokes every revolution, while 4 stroke engines have power strokes every other revolution.

• 2 stroke engines have a simpler design with fewer moving parts compared to 4 stroke engines.

• 2 stroke engines require a mixture of oil and fuel for lubrication, while 4 stroke engines have a separate oil reservoir for lubrication.

• 2 stroke engines produce more power for their size but are less fuel efficient than 4 stroke engines.

• Examples: Chainsaws and dirt bi...read more

Achieving 0% ppm (parts per million) is a goal for ensuring high quality in production processes.

• ppm is a measurement used to quantify defects or errors in a production process

• Achieving 0% ppm means that there are no defects or errors in the produced items

• This requires implementing robust quality control measures and continuous improvement

• Examples of quality control measures include thorough inspections, standardized processes, and employee training

Business handling techniques refer to the strategies and methods used to manage and improve business processes.

• Effective communication and collaboration among teams

• Continuous improvement through lean methodologies

• Data analysis and process mapping

• Standardization of processes

• Implementation of automation and technology

• Risk management and contingency planning

Hydraulic and fluid are substances that transmit force through a confined space.

• Hydraulic systems use liquid, usually oil, to transmit power.

• Fluids can be liquids or gases that flow and take the shape of their container.

• Hydraulic systems are commonly used in heavy machinery like excavators and cranes.

• Fluid dynamics is the study of how fluids move and interact.

• Hydraulic brakes in cars use fluid to transmit force from the brake pedal to the brakes.

The candidate should demonstrate their ability to manage small problems in production and material planning.

• Provide examples of small problems that you have successfully managed in the past

• Explain your problem-solving approach and how you prioritize tasks

• Highlight your ability to work under pressure and meet deadlines

• Discuss any relevant technical skills or tools you utilize in problem management

Hydraulic systems use liquid to transmit power, while pneumatic systems use gas.

• Hydraulic systems use incompressible fluids like oil to transmit power, while pneumatic systems use compressible gases like air.

• Hydraulic systems are typically used in heavy-duty applications where high force is required, such as in construction equipment or hydraulic presses.

• Pneumatic systems are often used in lighter applications where speed and flexibility are more important, such as in robotic...read more

Machining processing time refers to the time taken to complete a machining operation.

• Machining processing time is influenced by factors such as the complexity of the part, the type of material being machined, and the efficiency of the machine.

• It is important to optimize machining processing time to improve productivity and reduce costs.

• Techniques such as high-speed machining, multi-axis machining, and automation can help reduce processing time.

• Examples of machining processing...read more

WABCO stands for Westinghouse Air Brake Company.

• WABCO is a global supplier of braking control systems and other advanced technologies that improve the safety, efficiency and connectivity of commercial vehicles.

• It was founded in 1869 as the Westinghouse Air Brake Company by George Westinghouse.

• WABCO's products include air compressors, air dryers, braking systems, electronic braking systems, stability control systems, and more.

• The company has operations in over 40 countries and...read more

Braking systems are used in vehicles to slow down or stop the vehicle by converting kinetic energy into heat energy.

• Mechanical braking system: uses friction to slow down the vehicle (e.g. drum brakes)

• Hydraulic braking system: uses fluid pressure to transfer force to the brake pads (e.g. disc brakes)

• Regenerative braking system: converts kinetic energy into electrical energy to recharge the battery (e.g. in hybrid or electric vehicles)

A QCPC chart is a quality control process chart used to monitor and improve production processes.

• QCPC stands for Quality Control Process Chart.

• It is a visual tool used to monitor and improve production processes.

• It helps identify trends, patterns, and areas for improvement in the production process.

• Examples include control charts, Pareto charts, and scatter diagrams.

Types of gauges include pressure gauges, temperature gauges, and fuel gauges.

• Pressure gauges measure the pressure of a fluid or gas.

• Temperature gauges measure the temperature of a substance or environment.

• Fuel gauges measure the level of fuel in a tank.

• Other types of gauges include vacuum gauges, humidity gauges, and speedometers.