MBL Infrastructure Limited QA QC Engineer Interview Questions and Answers

A 6.6 kVA switch gear is a type of electrical equipment used for controlling, protecting, and isolating electrical circuits.

• Switch gear is used to control the flow of electricity in a circuit

• 6.6 kVA indicates the power rating of the switch gear

• It is important for protecting electrical equipment from overloads and short circuits

Various types of welding can be used in tanks, including MIG welding, TIG welding, and submerged arc welding.

• MIG welding is commonly used for welding tanks due to its versatility and speed.

• TIG welding is often used for welding tanks that require high precision and quality welds.

• Submerged arc welding is used for welding thicker materials in tanks, providing deep penetration and high deposition rates.

Types of tanks include storage tanks, pressure vessels, mixing tanks, and fermenters.

• Storage tanks are used to store liquids or gases, such as water tanks or fuel tanks.

• Pressure vessels are designed to hold gases or liquids at a pressure substantially different from the ambient pressure, like propane tanks or compressed air tanks.

• Mixing tanks are used for blending different components together, commonly found in indust...read more

Epoxy painting is commonly used on the bottom side of annular plates for corrosion protection.

• Epoxy painting is preferred for its corrosion resistance properties

• It provides a protective barrier against moisture and chemicals

• Epoxy coatings are durable and long-lasting

• Common examples of epoxy paints used for annular plates include epoxy primer and epoxy topcoat

Aggregate code is used to combine multiple values into a single result.

• Aggregate functions are commonly used in SQL queries to perform calculations on sets of data.

• Examples of aggregate functions include SUM, AVG, COUNT, MIN, and MAX.

• Aggregate code can be used to summarize data and generate reports in a more efficient manner.

Code of sampling refers to the set of rules and procedures followed in selecting samples for testing or analysis.

• Code of sampling includes guidelines on sample size, selection method, and frequency of sampling.

• It ensures that samples are representative of the population being tested.

• Examples of code of sampling include ISO 2859 for sampling procedures in quality control and ASTM D4057 for sampling petroleum and petrole