10+ Sattva Consulting Delhi Interview Questions and Answers

Cp, Cpk, Pp, and Ppk are statistical process capability indices used to measure the ability of a process to produce products within specification limits.

• Cp and Cpk are used for short-term process capability analysis, while Pp and Ppk are used for long-term process capability analysis.

• Cp measures the potential capability of a process to meet specifications, while Cpk measures the actual capability of a process to meet specifications considering the process mean and variation.

• P...read more

PFMEA is a risk assessment tool used in industrial engineering to identify and prioritize potential failures.

• PFMEA stands for Process Failure Mode and Effects Analysis

• It is used to identify potential failures in a process and prioritize them based on their severity, occurrence, and detectability

• There are three types of PFMEA: Design FMEA, Process FMEA, and System FMEA

• RPN (Risk Priority Number) is calculated by multiplying the severity, occurrence, and detectability scores for...read more

Lean is a methodology to eliminate waste and improve efficiency. 8 wastes are non-value adding activities. DMAIC is a problem-solving tool.

• Lean is a systematic approach to identify and eliminate waste in processes

• 8 wastes are defects, overproduction, waiting, non-utilized talent, transportation, inventory, motion, and extra processing

• DMAIC is a problem-solving tool used in Six Sigma methodology

• DMAIC stands for Define, Measure, Analyze, Improve, and Control

• The difference betwe...read more

Control charts are statistical tools used to monitor and control a process over time.

• They help identify if a process is stable or unstable.

• They can be used to detect and correct problems in a process.

• Common types include X-bar and R charts, p charts, and c charts.

• They are widely used in manufacturing, healthcare, and other industries.

• Example: A hospital might use a control chart to monitor the number of patient falls per month.

• Example: A factory might use a control chart to m...read more

Hypothesis testing is a statistical method to test a hypothesis about a population parameter.

• It involves formulating a null hypothesis and an alternative hypothesis.

• The null hypothesis assumes that there is no significant difference between the sample and population.

• The alternative hypothesis assumes that there is a significant difference between the sample and population.

• Types of hypothesis testing include one-tailed and two-tailed tests, and parametric and non-parametric te...read more

Line balancing is the process of evenly distributing work among production lines to optimize efficiency.

• Identify tasks and their sequence

• Determine cycle time for each task

• Calculate the minimum number of workstations needed

• Assign tasks to workstations

• Evaluate and adjust as necessary

• Methods include longest task time, shortest task time, and ranked positional weight

• Example: A car assembly line where each workstation has a specific task such as installing the engine or attaching ...read more

MSA stands for Measurement System Analysis. It is used to evaluate the measurement system's ability to provide accurate and reliable data.

• MSA is used to identify and quantify the sources of variation in a measurement system.

• It helps in determining the accuracy, precision, and stability of the measurement system.

• There are two types of MSA: Attribute Agreement Analysis and Variable Gauge R&R Analysis.

• Attribute Agreement Analysis is used for qualitative data while Variable Gauge...read more

Regression and correlation are statistical methods used to analyze the relationship between two variables.

• Regression is used to predict the value of one variable based on the value of another variable.

• Correlation measures the strength and direction of the relationship between two variables.

• Regression and correlation are often used in industrial engineering to analyze data and make predictions.

• Examples of regression and correlation include analyzing the relationship between pr...read more

PFD stands for Process Flow Diagram, which is a graphical representation of a process.

• PFDs are used to show the flow of materials, energy, and information through a process.

• They use symbols to represent equipment, valves, instruments, and other components.

• PFDs are often used in chemical and process engineering to design and optimize processes.

• Some common symbols used in PFDs include pumps, tanks, heat exchangers, and control valves.

DOE types include screening, factorial, response surface, and mixture designs. Sample size calculation depends on the type of DOE.

• Screening designs are used to identify the most important factors affecting a response.

• Factorial designs are used to study the effects of multiple factors and their interactions.

• Response surface designs are used to optimize a response by finding the best combination of factors.

• Mixture designs are used when the factors are proportions of different c...read more

Cpk, Ppk, and process validation are all related to measuring and ensuring the capability and stability of a process.

• Cpk and Ppk are statistical process capability indices used to assess the ability of a process to produce within specification limits.

• Cpk is used for short-term variation, while Ppk is used for long-term variation.

• Process validation is the process of establishing evidence that a process consistently produces a result meeting predetermined specifications.

• Process...read more

Process control is the use of techniques and technologies to control and monitor a production process.

• Process control involves monitoring and adjusting variables in a production process to ensure quality and efficiency.

• PLC (Programmable Logic Controller) is a type of industrial control system that uses logic-based programming to automate processes.

• SCADA (Supervisory Control and Data Acquisition) is a system that collects and analyzes data from various sensors and devices to m...read more