Quality Engineer in Q.A

Quality Engineer in Q.A Interview Questions and Answers

Updated 2 Jul 2025

3d ago

Q. What is the difference between a 2-stroke and a 4-stroke engine?

Ans.

2 stroke engines have a simpler design and produce more power, but are less fuel efficient and emit more pollution compared to 4 stroke engines.

2 stroke engines complete a power cycle in 2 strokes of the piston, while 4 stroke engines complete it in 4 strokes.
2 stroke engines have a simpler design with fewer moving parts, making them lighter and more compact.
2 stroke engines produce more power per cycle due to their higher RPM capability.
4 stroke engines are more fuel efficie...read more

2d ago

Ans.

The numerical value of CP at six sigma is 2.

CP is a process capability index that measures how well a process is performing within specification limits.
At six sigma, the CP value is 2, indicating that the process is capable of producing 99.73% defect-free products.
CP is calculated by dividing the specification width by six times the process standard deviation.
A CP value of 2 means that the process is well-centered within the specification limits and has a low variation.

Quality Engineer in Q.A Interview Questions and Answers for Freshers

5d ago

Ans.

Quality Assurance (QA) focuses on preventing defects, while Quality Control (QC) focuses on identifying and fixing defects.

QA is a proactive process that involves establishing standards and procedures to prevent defects.
QC is a reactive process that involves inspecting and testing products to identify defects.
QA is focused on the entire software development lifecycle, ensuring that quality is built into the process.
QC is focused on the final product, checking for defects befo...read more

5d ago

Ans.

Efficiency is doing things right, while effectiveness is doing the right things.

Efficiency is about how well resources are utilized to achieve a goal.
Effectiveness is about achieving the desired outcome or goal.
Efficiency focuses on the process, while effectiveness focuses on the result.
Efficiency is measured by metrics like time, cost, or effort.
Effectiveness is measured by metrics like customer satisfaction or goal attainment.
An example of efficiency is completing a task in...read more

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4d ago

Ans.

SPC stands for Statistical Process Control.

SPC is a method used to monitor and control processes to ensure they are operating within acceptable limits.
It involves collecting and analyzing data to identify and reduce variation in a process.
SPC uses statistical techniques such as control charts to visualize and interpret data.
It helps in identifying and addressing process issues before they result in defects or non-conforming products.
SPC is widely used in industries like manuf...read more