10+ Maintenance Officer Interview Questions and Answers

Pumps, gear boxes, chillers, compressors, cooling towers, and boilers are essential components in industrial maintenance.

• Pumps are used to move fluids through a system, such as water pumps in HVAC systems.

• Gear boxes are used to change the speed or torque of a rotating shaft, commonly found in machinery.

• Chillers are used to remove heat from a liquid via a vapor-compression or absorption refrigeration cycle.

• Compressors are used to increase the pressure of a gas, like air compre...read more

Cooling tower TR calculation involves determining the amount of heat that can be removed by the cooling tower.

• Determine the flow rate of water through the cooling tower

• Measure the temperature of the water entering and leaving the cooling tower

• Calculate the difference in temperature between the water entering and leaving the cooling tower

• Use the formula TR = (500 x flow rate x delta T) / 12,000 to calculate the cooling tower tonnage

• Ensure that the calculated TR matches the req...read more

On Load Tap Changer (OLTC) is typically installed on the high voltage side of a transformer.

• OLTC is usually installed on the high voltage side of the transformer to regulate the voltage output.

• It is important for adjusting the voltage levels based on load requirements.

• Installing OLTC on the high voltage side allows for more precise control over the output voltage.

• OLTC can be found on the primary side of the transformer in most cases.

Various types of lubricants are used depending on the equipment and application.

• Mineral oil-based lubricants

• Synthetic lubricants

• Biodegradable lubricants

• Greases

• Penetrating lubricants

• Dry lubricants

• Solid lubricants

• Multipurpose lubricants

• Food-grade lubricants

Single line diagram shows electrical distribution from high voltage incoming to low voltage panel

• HT incoming source connected to transformer

• Transformer steps down voltage to suitable level for distribution

• Distribution panel distributes power to various loads

• Protective devices like circuit breakers and fuses are included in the diagram

Refrigeration tones refer to the sound produced by a refrigeration system during operation.

• Refrigeration tones can vary depending on the type of refrigeration system and its components.

• Common tones include humming, buzzing, and clicking.

• Unusual or loud tones may indicate a problem with the system that requires maintenance or repair.

• Regular maintenance can help prevent excessive or unusual refrigeration tones.

• Examples of refrigeration systems include air conditioning units, re...read more

Remote Tap Changer Control panel

• RTCC panel is used in power transformers to control the tap changer remotely

• It helps in adjusting the transformer's output voltage without manual intervention

• RTCC panels are commonly used in substations and power plants

PM activity stands for Preventive Maintenance activity, which involves scheduled inspections, repairs, and replacements to prevent equipment breakdowns.

• Scheduled inspections to identify potential issues before they become major problems

• Regular cleaning and lubrication of equipment to ensure optimal performance

• Replacing worn out parts before they fail to prevent costly breakdowns

• Calibrating equipment to maintain accuracy and efficiency

• Examples: changing air filters in HVAC sys...read more

Yes, I am familiar with several ERP systems.

• I have experience with SAP ERP system.

• I have also worked with Oracle ERP system.

• I am familiar with Microsoft Dynamics ERP system.

• I have used NetSuite ERP system in the past.

• I am comfortable learning new ERP systems as well.

Capacity in machine refers to the maximum amount of work or load that a machine can handle efficiently.

• Capacity in machine is determined by factors such as power output, size, and design.

• It is important to consider the capacity of a machine when planning maintenance schedules and operations.

• Examples of capacity in machines include weight capacity of a crane, processing capacity of a computer, and load capacity of a conveyor belt.