Aj Engineering QA QC Engineer Interview Questions and Answers

To measure micrometre reading, use a micrometre screw gauge and take the reading from the scale and thimble.

• Clean the micrometre screw gauge before use

• Place the object to be measured between the anvil and spindle

• Turn the thimble until the object is firmly held

• Read the scale and thimble to get the micrometre reading

• Take multiple readings and calculate the average for accuracy

Fishbone diagram is a visual tool used to identify the possible causes of a problem.

• Also known as Ishikawa diagram or cause-and-effect diagram

• Used in quality control to identify root causes of defects

• Categories include people, process, equipment, materials, environment, and management

• Example: A fishbone diagram can be used to identify the possible causes of delays in a manufacturing process

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and isolation

• Examples include step-up tran...read more

Protection of generator involves implementing various measures to prevent damage during abnormal operating conditions.

• Implementing overcurrent protection to prevent damage from excessive current flow

• Installing differential protection to detect internal faults

• Using reverse power protection to prevent generator from acting as a motor

• Applying overvoltage and undervoltage protection to safeguard against voltage fluctuation...read more

Vernier micrometre is used to measure small dimensions with high precision. Other quality instruments include calipers, height gauges, and dial indicators.

• Vernier micrometre is used to measure dimensions with high accuracy, typically up to 0.01mm.

• Calipers are used for measuring external and internal dimensions of an object.

• Height gauges are used to measure vertical distances and depths.

• Dial indicators are used to measu...read more

0.02 of least count refers to the smallest measurement that can be made with a measuring instrument.

• Least count is the smallest measurement that can be made with a measuring instrument.

• It is determined by dividing the smallest measurement that can be read on the instrument by the number of divisions on the scale.

• For example, if a ruler has 100 divisions and the smallest measurement that can be read is 1 mm, then the le...read more