Vandana Global CBM Engineer Interview Questions and Answers

Motor protection settings are parameters set to protect the motor from damage due to overcurrent, overload, overheating, etc.

• Motor protection settings include overload relay, thermal overload relay, circuit breaker, fuses, etc.

• These settings are crucial for preventing motor damage and ensuring safe operation.

• Examples of motor protection settings include setting the overload relay to trip at a certain current level, set...read more

MTTR stands for Mean Time To Repair and MTBF stands for Mean Time Between Failures.

• MTTR is the average time taken to repair a failed component or system.

• MTBF is the average time between failures of a component or system.

• MTTR is calculated as total downtime divided by the number of failures.

• MTBF is calculated as total uptime divided by the number of failures.

• MTTR is usually measured in hours or minutes, while MTBF is me...read more

Balancing an impeller involves adjusting the weight distribution to minimize vibration and improve performance.

• Identify the heavy spots on the impeller

• Add or remove material to balance the impeller

• Use a balancing machine to check the balance

• Repeat the process until the impeller is properly balanced

A circuit diagram of hydraulics shows the flow of hydraulic fluid through a system of valves, cylinders, and pipes.

• Hydraulic pump: generates pressure to move fluid through the system

• Valves: control the direction and flow rate of the fluid

• Cylinders: convert fluid pressure into mechanical force

• Pipes: transport the fluid between components

• Pressure gauges: monitor the pressure levels in the system

Preventive maintenance is scheduled maintenance to prevent breakdowns while predictive maintenance uses data to predict failures.

• Preventive maintenance involves regularly scheduled maintenance to prevent equipment breakdowns and prolong the lifespan of equipment.

• Predictive maintenance uses data analysis to predict when equipment failure is likely to occur, allowing for maintenance to be scheduled before a breakdown occ...read more

PLC stands for Programmable Logic Controller and HMI stands for Human Machine Interface.

• PLC is a digital computer used for automation of electromechanical processes.

• It is used to control machinery on factory assembly lines, amusement rides, or light fixtures.

• HMI is a graphical interface that allows humans to interact with machines.

• It provides a visual representation of the process being controlled by the PLC.

• Examples o...read more

Power factor can be managed by using capacitors, improving equipment efficiency, and reducing reactive power.

• Install capacitors to offset reactive power and improve power factor

• Upgrade equipment to more efficient models

• Reduce the amount of reactive power by optimizing operations

• Implement power factor correction techniques

• Regularly monitor and maintain power factor levels