Aparna Constructions and Estates Senior QA QC Engineer Interview Questions and Answers

ACI 211.1 is the code of reference for concrete mix design.

• ACI 211.1 is the standard practice for selecting proportions for normal, heavyweight, and mass concrete based on specified compressive strength.

• Other codes of reference include ASTM C94, which provides standard specifications for ready-mixed concrete.

• The mix design should also consider factors such as workability, durability, and exposure conditions.

• The mix des...read more

Quality refers to the degree of excellence or superiority of a product or service.

• Quality is a measure of how well a product or service meets customer expectations and requirements.

• It involves ensuring that the product or service is free from defects or errors.

• Quality also includes factors such as reliability, durability, and performance.

• Quality can be subjective and may vary depending on the context and industry.

• Examp...read more

The tolerance of sand bulkage refers to the acceptable variation in the volume of sand when it is compacted.

• Tolerance of sand bulkage is typically expressed as a percentage.

• It is important to measure and control sand bulkage to ensure consistency in construction materials.

• The acceptable tolerance may vary depending on the specific application and industry standards.

• For example, in concrete production, the tolerance for...read more

QA focuses on preventing defects while QC focuses on identifying and fixing defects.

• QA is a process-oriented approach that aims to prevent defects from occurring in the first place.

• QC is a product-oriented approach that focuses on identifying defects in the final product.

• QA involves activities such as planning, designing, and implementing processes to ensure quality.

• QC involves activities such as testing, inspecting, a...read more

QMS stands for Quality Management System.

• QMS is a set of policies, processes, and procedures required for planning and execution of quality control.

• It ensures that products or services meet customer requirements and comply with regulations.

• QMS includes activities such as quality planning, quality control, quality assurance, and quality improvement.

• Examples of QMS include ISO 9001, Six Sigma, and Total Quality Managemen

Engine function for heavy machines involves converting fuel into mechanical energy to power the machine.

• Fuel is injected into the engine's combustion chamber

• The fuel ignites and creates a controlled explosion

• The explosion pushes a piston, which turns a crankshaft

• The crankshaft converts the linear motion of the piston into rotational motion

• The rotational motion powers the machine's hydraulic system or driveshaft

• Examples...read more

Common faults in engines and gears.

• Engine faults: overheating, low oil pressure, misfiring, knocking, stalling.

• Gear faults: slipping, grinding, difficulty shifting, noisy operation.

• Examples: worn piston rings, damaged bearings, worn synchros, damaged gears.

• Regular maintenance and inspections can prevent many faults.

• Proper lubrication and fluid levels are crucial for engine and gear health.