Nalco Apprentice Interview Questions and Answers

Sharp corners are avoided in casting to prevent stress concentration and improve the overall strength and quality of the casting.

• Sharp corners can lead to stress concentration, which can cause cracks or failure in the casting.

• Rounded corners distribute stress more evenly, reducing the likelihood of defects.

• Sharp corners can also create difficulties during the casting process, such as mold filling and solidification iss...read more

Newtonian fluid is a type of fluid that follows Newton's law of viscosity.

• Newtonian fluid exhibits a linear relationship between shear stress and shear rate.

• Examples of Newtonian fluids include water, air, and most oils.

• Stages of fracture include initiation, propagation, and final failure.

• Engine works by converting heat energy into mechanical work.

• Basic thermodynamics questions may include concepts like the first and s...read more

The firing order in a 6 cylinder engine refers to the sequence in which each cylinder fires.

• The firing order is determined by the engine design and is usually specified by the manufacturer.

• It is important to follow the correct firing order to ensure proper engine performance and minimize vibrations.

• The firing order can be found in the engine's service manual or by contacting the manufacturer.

• For example, a common firin...read more

RPM turbo refers to the revolutions per minute of a turbocharger, which measures how fast the turbocharger's turbine is spinning.

• RPM turbo is a measure of the speed at which a turbocharger's turbine is rotating

• It indicates the efficiency and power output of the turbocharger

• Higher RPM turbo values generally result in increased boost pressure and engine performance

• For example, a turbo with an RPM turbo of 10,000 would sp...read more