Propel Industries Senior Engineer Mechanical 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