Super Smelters Mechanical Maintenance Engineer Interview Questions and Answers

There are two types of vibration - free and forced. Free vibration occurs when a system oscillates on its own, while forced vibration occurs when an external force is applied to the system.

• Free vibration occurs when a system is disturbed and then allowed to oscillate on its own without any external force acting on it.

• Forced vibration occurs when an external force is applied to a system, causing it to vibrate at a speci...read more

Maintenance of ball mill and its associated equipment involves regular inspection, cleaning, lubrication, and replacement of worn parts.

• Regularly inspect the ball mill and its associated equipment for any signs of wear or damage

• Clean the ball mill and its associated equipment regularly to prevent buildup of debris and dirt

• Lubricate the ball mill and its associated equipment as per the manufacturer's recommendations

• Repl...read more

Open circuit has a break in the circuit, while closed circuit has a complete path for current flow.

• Open circuit has a switch that is turned off or a broken wire, which prevents current flow.

• Closed circuit has a switch that is turned on or a complete path for current flow.

• Open circuit does not allow electricity to flow, while closed circuit allows electricity to flow.

• Examples of open circuit include a light switch turne...read more

The total length of ball mill liners and diaphragm slot size depend on the make and model of the mill.

• The length of the liners and size of the diaphragm slot can vary depending on the manufacturer and model of the ball mill.

• The liner categories can include single wave, double wave, or corrugated liner designs.

• The diaphragm slot size can range from a few millimeters to several centimeters, depending on the size of the m...read more

Hydraulics is a branch of engineering that deals with the mechanical properties of liquids, especially water or oil, and their applications.

• Hydraulics involves the study of fluid mechanics and the behavior of liquids under pressure.

• It is used in various applications such as hydraulic machinery, hydraulic systems, and hydraulic power transmission.

• Hydraulic systems use fluid pressure to generate, control, and transmit po...read more

Control valves are used to regulate the flow, pressure, temperature, or level of a fluid in a system.

• There are several types of control valves, including globe valves, butterfly valves, ball valves, and plug valves.

• Globe valves are commonly used for throttling and regulating flow.

• Butterfly valves are often used for large flow rates and low-pressure applications.

• Ball valves provide quick shut-off and are suitable for on...read more

Helical gearboxes are commonly used in the steel industry.

• Helical gearboxes are preferred in the steel industry due to their high efficiency and smooth operation.

• These gearboxes provide better load distribution and reduce noise and vibration.

• They are capable of handling heavy loads and high torque requirements.

• Helical gearboxes are commonly used in steel rolling mills, steel processing plants, and other steel manufactu

Check in bearing is a type of bearing that allows axial movement while preventing radial movement.

• Check in bearing is designed to accommodate axial loads.

• It allows movement in one direction while preventing movement in the opposite direction.

• This type of bearing is commonly used in applications where axial displacement is required, such as in automotive suspensions.

• An example of a check in bearing is a thrust bearing u

Servo valve nas value refers to the National Aerospace Standard (NAS) specification for servo valves.

• NAS value is a standard that defines the performance and quality requirements for servo valves used in aerospace applications.

• It ensures that servo valves meet specific criteria for reliability, accuracy, and durability.

• NAS value is often used as a reference when selecting or evaluating servo valves for aerospace system...read more