Marico Maintenance Engineer Interview Questions and Answers

Control system is a system that manages, commands, directs or regulates the behavior of other devices or systems.

• Control system is used to manage and regulate the behavior of other devices or systems

• It involves the use of sensors, actuators, and controllers to maintain a desired output

• Examples include HVAC systems, traffic lights, and industrial automation systems

• Process control is a type of control system that is used...read more

Maintaining machinery spares involves proper storage, inventory management, regular inspections, and timely replacements.

• Create a detailed inventory of all machinery spares including part numbers, quantities, and locations.

• Store spares in a designated area that is clean, organized, and easily accessible.

• Implement a system for regular inspections to check for wear and tear, damage, or expiration dates.

• Establish a schedu...read more

Motivate the technical team by setting clear goals, providing recognition, offering training opportunities, and fostering a positive work environment.

• Set clear goals and expectations for the team to work towards.

• Provide recognition for their hard work and achievements.

• Offer training opportunities to help them develop their skills and advance in their careers.

• Foster a positive work environment by promoting teamwork, com...read more

Maintaining discipline requires clear expectations, consistent enforcement, positive reinforcement, and effective communication.

• Set clear expectations for behavior and performance.

• Consistently enforce rules and policies.

• Provide positive reinforcement for good behavior.

• Communicate effectively with team members about expectations and consequences.

• Lead by example and demonstrate the behavior you expect from others.

Yes, PLC can be repaired by troubleshooting, replacing faulty components, and reprogramming if necessary.

• PLC can be repaired by troubleshooting to identify the root cause of the issue.

• Faulty components can be replaced to restore the functionality of the PLC.

• Reprogramming may be necessary if the issue is related to the software or logic of the PLC.

• Regular maintenance and timely repairs can help prevent major breakdowns

DG maintenance process involves regular inspections, testing, and servicing of diesel generators to ensure optimal performance and reliability.

• Regularly inspecting the diesel generator for any signs of wear or damage

• Testing the generator's components such as fuel system, cooling system, and electrical system

• Servicing the generator by changing oil, filters, and spark plugs as needed

• Keeping maintenance records and schedu...read more

SMPS stands for Switched Mode Power Supply. It is a type of power supply that uses switching devices to convert electrical power efficiently.

• SMPS converts AC voltage to DC voltage through a series of switching components

• It is more efficient than traditional linear power supplies

• Commonly used in electronic devices like computers, TVs, and LED lights

• Helps regulate voltage and current to provide stable power output

Erection and commissioning of a pneumatic compressor involves assembling the components, connecting the necessary piping, testing for functionality, and fine-tuning for optimal performance.

• Assemble the components of the pneumatic compressor according to the manufacturer's instructions.

• Connect the necessary piping for air intake, compression, and output.

• Test the compressor for functionality by running it empty and check...read more

Blowdown of cooling tower can be calculated using cycles of concentration. Maintenance practices include regular cleaning, inspection, and water treatment. Cooling tower capacity can be calculated based on heat load and design parameters.

• Calculate blowdown using cycles of concentration formula: Blowdown = Evaporation Loss / (Cycles of Concentration - 1)

• Maintenance practices include regular cleaning of cooling tower fil...read more

RCM stands for Reliability Centered Maintenance, a proactive maintenance strategy focused on identifying and preventing equipment failures.

• RCM is a systematic approach to maintenance planning that aims to optimize maintenance tasks to ensure equipment reliability.

• It involves analyzing the functions and potential failure modes of equipment to determine the most effective maintenance strategies.

• RCM prioritizes maintenanc...read more

Pumps can be classified based on their casings as follows: volute casing, axial split casing, and radial split casing.

• Volute casing pumps have a spiral-shaped casing that gradually expands to the discharge outlet.

• Axial split casing pumps have a casing split along the horizontal centerline of the pump.

• Radial split casing pumps have a casing split along the vertical centerline of the pump.

Air compressor works by compressing air to increase its pressure and decrease its volume.

• Air is drawn into the compressor through an intake valve.

• The air is then compressed using a piston or rotating impeller.

• Compressed air is stored in a tank or released directly for use.

• Examples of air compressors include reciprocating, rotary screw, and centrifugal compressors.