NMDC Limited Maintenance Engineer Interview Questions and Answers

Math, reasoning ,Quant, technical, behaviour

Situational Group discussion

Aptitude test b.e electronics level

Q1. 1.Function of Turbocharger,Brake system. 2.Automatic transmission system function and working principle. 3.Types of undercarriages 4.Preventive maintenance 5.Common Rail system and functions 6.what is Hy...read more
Ans. 
Interview questions for Maintenance Manager position covering topics such as turbochargers, brake systems, automatic transmissions, undercarriages, preventive maintenance, common rail systems, hydraulic lock systems, excavator troubleshooting, oil refilling capacity, and target/cost management.
• Turbocharger increases engine power by compressing air intake

• Brake system converts kinetic energy to heat to slow or stop a veh...read more
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Q1. 1.Long/Short term goal 2.How to overcome and handle Pressure situations.
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My long-term goal is to continuously improve the maintenance process and reduce downtime. My short-term goal is to implement a preventive maintenance program. To handle pressure situations, I prioritize tasks, delegate responsibilities, and communicate effectively.
• Long-term goal: Continuous improvement of maintenance process and reduction of downtime

• Short-term goal: Implementation of preventive maintenance program

• To ha...read more
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Q1. What is maintenance, preventive maintenance, break down maintenance
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Maintenance is the process of keeping equipment in good condition. Preventive maintenance is scheduled maintenance to prevent breakdowns. Breakdown maintenance is repairing equipment after it has failed.
• Maintenance is the process of ensuring that equipment is in good working condition.

• Preventive maintenance is scheduled maintenance that is performed to prevent equipment breakdowns.

• Breakdown maintenance is the repair of...read more
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Q1. How can you confirm the isolation before performing the preventive maintenance of a 11 kV power transformer
Ans. 
To confirm isolation before performing preventive maintenance on a 11 kV power transformer, follow these steps:
• Ensure the power supply to the transformer is switched off

• Lock and tag the circuit breaker or disconnect switch to prevent accidental energization

• Use a voltage detector or multimeter to verify absence of voltage at the transformer terminals

• Check for any warning signs or labels indicating isolation

• Visually insp...read more
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Q1. What is frl and enumati
Ans. 
FRL stands for Filter, Regulator, Lubricator and Enumati is not a recognized term in the maintenance field.
• FRL is a combination of components used in pneumatic systems to filter, regulate pressure, and lubricate the air supply.

• Examples of FRL components include air filters to remove contaminants, regulators to control pressure, and lubricators to add oil to the air.

• Enumati does not have a known meaning or usage in main
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Q2. Full from fitter
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Q3. Type of baring a
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There are various types of bearings used in machinery, such as ball bearings, roller bearings, and plain bearings.
• Ball bearings use balls to reduce friction between two surfaces, commonly found in wheels and pulleys.

• Roller bearings use cylindrical rollers to reduce friction, commonly found in conveyor belts and gearboxes.

• Plain bearings have a simple design with a sliding surface, commonly found in hinges and bushings.
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Q4. Callsificatin of fill offjob
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Fill offjob is a term used in maintenance to classify tasks that are completed outside of regular working hours.
• Fill offjob tasks are typically scheduled during weekends or holidays to minimize disruption to regular operations.

• Examples of fill offjob tasks include major equipment repairs, facility upgrades, and preventive maintenance activities.

• Maintenance fitters may be required to work on fill offjob tasks to ensure ...read more
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Q5. List count of varniar calipat
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The count of varniar calipat is not a standard term in the maintenance fitter field.
• There is no standard definition or reference for varniar calipat in maintenance fitting.

• It is possible that the term is specific to a certain company or industry, in which case the count would depend on their specific requirements.

• It would be best to ask for clarification on the term or context in which it is being used.
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Q6. Calcification of fill
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Calcification of fill refers to the accumulation of calcium deposits in a filling material.
• Calcification of fill can occur in dental fillings, causing them to harden and potentially crack over time.

• This process can also occur in industrial settings, such as in pipelines where calcium deposits build up and restrict flow.

• Preventative measures such as regular cleaning and maintenance can help reduce the risk of calcificat
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Q7. List count of bor gauge
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The count of bore gauges refers to the number of bore gauges available for use in maintenance tasks.
• Check the inventory records for the number of bore gauges on hand

• Count the physical bore gauges in the maintenance department

• Consult with colleagues or supervisors to confirm the count

• Ensure all bore gauges are accounted for and in working condition
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