10+ QC Engineer Interview Questions and Answers for Freshers

Testing for materials like concrete, cement, and soil involves various methods and techniques.

• For concrete, tests like compressive strength, slump test, and air content test can be conducted.

• For cement, tests like fineness, soundness, and setting time can be conducted.

• For soil, tests like sieve analysis, moisture content, and compaction test can be conducted.

• Testing should be done according to relevant standards and specifications.

• Proper sampling and preparation of specimens ...read more

The invention of the motor revolutionized the industrial world by providing a reliable source of mechanical power.

• The first electric motor was invented by Michael Faraday in 1821.

• Motors work by converting electrical energy into mechanical energy through the interaction of magnetic fields.

• There are various types of motors such as DC motors, AC motors, and stepper motors.

• Motors are used in a wide range of applications including industrial machinery, household appliances, and el...read more

Minimum grade of concrete in severe condition is typically M40 or higher.

• Minimum grade of concrete in severe condition is usually M40 or higher

• Higher grade concrete such as M50 or M60 may be used for critical structures in severe conditions

• Severe conditions include exposure to aggressive chemicals, extreme weather, high traffic areas, etc.

The motor working process involves converting electrical energy into mechanical energy to produce motion.

• Electricity is supplied to the motor through wires or cables.

• The electricity creates a magnetic field which interacts with the motor's coils.

• This interaction causes the motor's rotor to spin, generating mechanical energy.

• The mechanical energy is used to drive the motor's output shaft, producing motion.

• Different types of motors (e.g. DC motors, AC motors) have variations in...read more

Cube mould dimension refers to the size of the cube mould used in construction to test the compressive strength of concrete.

• Cube mould dimensions are typically specified in millimeters.

• The most common cube mould dimension is 150mm x 150mm x 150mm.

• Other cube mould dimensions include 100mm x 100mm x 100mm and 200mm x 200mm x 200mm.

• Cube moulds are made of steel or cast iron and have a removable base and lid.

• Accurate cube mould dimensions are important for ensuring reliable test ...read more

Micrometer least count formula is the smallest measurement that can be read on a micrometer.

• The formula is: Least count = Pitch / Number of divisions on the circular scale

• Pitch is the distance between two consecutive threads on the spindle

• Number of divisions on the circular scale is the number of equally spaced divisions on the thimble

• For example, if the pitch is 0.5 mm and the number of divisions on the circular scale is 50, then the least count would be 0.01 mm

M20 grade compressive strength is a measure of the maximum load a concrete specimen can bear.

• M20 grade concrete has a compressive strength of 20 megapascals (MPa).

• It is commonly used in residential and commercial construction for foundations, beams, and slabs.

• The compressive strength is determined by testing concrete cubes or cylinders at a specific age, usually 28 days.

• The strength can be influenced by factors such as the water-cement ratio, curing conditions, and aggregate ...read more

The question is asking for the least count of a measuring instrument with a range of 50 and a resolution of 0.5.

• The least count is the smallest measurement that can be read on the instrument.

• In this case, the instrument has a range of 50 and a resolution of 0.5.

• To find the least count, divide the range by the resolution: 50/0.5 = 100.

• Therefore, the least count of the instrument is 0.5/100 = 0.005.

Plug gauge is a precision measuring tool used to check the diameter of a hole or slot.

• Plug gauge is made of hardened steel and has a specific diameter.

• It is inserted into the hole or slot to check if it is within the specified tolerance.

• Plug gauge is commonly used in manufacturing and engineering industries.

• It is available in different types such as plain, threaded, and taper plug gauges.

• Plug gauge is an important tool for ensuring the quality and accuracy of machined parts.

The 5 core tools are a set of quality control tools used in the automotive industry to ensure product quality and customer satisfaction.

• 1. Process Flow Diagrams: Used to map out the steps in a process.

• 2. Control Charts: Used to monitor process variation over time.

• 3. Pareto Analysis: Used to identify the most significant factors affecting quality.

• 4. Histograms: Used to visualize data distribution.

• 5. Scatter Diagrams: Used to identify relationships between variables.

0.02 is the smallest measurement that can be read on the instrument.

• Least count is the smallest measurement that can be read on an instrument.

• It is important to know the least count of an instrument to ensure accurate measurements.

• For example, if the least count of a ruler is 0.1 cm, then the smallest measurement that can be read is 0.1 cm.

• In this case, the least count is 0.02, which means the smallest measurement that can be read is 0.02 units.

Snap gauge is a measuring tool used to check the thickness or diameter of a workpiece.

• It consists of two jaws, one fixed and one movable, which are adjusted to the desired measurement.

• The movable jaw is then snapped into place to hold the measurement.

• Snap gauges are commonly used in manufacturing and quality control to ensure parts meet specifications.

• They are often used in conjunction with micrometers and other measuring tools.

• Snap gauges come in various sizes and shapes to ...read more