PTron. Interview Questions and Answers

Silica sand is commonly used in foundries due to its high melting point and low reactivity.

• Silica sand is the most commonly used type of sand in foundries.

• It has a high melting point, which makes it ideal for use in casting metals.

• It is also low in reactivity, which means it won't react with the metal being cast.

• Other types of sand, such as zircon sand, chromite sand, and olivine sand, may also be used in foundries depending on the specific application.

• The type of sand used w...read more

Coal dust plays a significant role in various industries, including energy production and manufacturing.

• Coal dust is used as a fuel in power plants to generate electricity.

• It is also used in the manufacturing of steel and cement.

• Coal dust can be a health hazard for workers who are exposed to it regularly.

• It can cause respiratory problems and lung diseases such as black lung disease.

• Efforts are made to control coal dust emissions to reduce its impact on the environment and hum...read more

A cause and effect diagram of shrinkage identifies the possible causes and their effects on the final product.

• Identify the main problem or effect of shrinkage

• List the possible causes of shrinkage such as material properties, processing conditions, or design factors

• Categorize the causes into major groups such as man, machine, material, method, or environment

• Analyze the causes and their effects on the final product

• Develop solutions to address the root causes of shrinkage

A cause and effect diagram of blow is a visual tool used to identify the possible causes and effects of a blow.

• The diagram consists of a central box representing the blow and branches representing the possible causes and effects.

• Causes can be categorized into six main categories: people, methods, machines, materials, measurements, and environment.

• Examples of causes of a blow could include faulty equipment, human error, or environmental factors such as weather conditions.

• Effec...read more

Sodium bentonite, Calcium bentonite, Potassium bentonite, Aluminum bentonite

• Sodium bentonite is used in drilling muds, Calcium bentonite is used in cement and animal feed, Potassium bentonite is used in cosmetics and pharmaceuticals, Aluminum bentonite is used in water purification

• Bentonite is a type of clay that is composed of volcanic ash

• Bentonite is known for its ability to absorb water and expand

• Bentonite is also used in the production of ceramics and paper