NSSL Maintenance Engineer Interview Questions and Answers

Q1. What is maintenance?
Ans. 
Maintenance is the process of ensuring that equipment, machinery, or facilities are in good working condition.
• Regular inspection and repair of equipment

• Preventive maintenance to avoid breakdowns

• Corrective maintenance to fix issues

• Predictive maintenance to anticipate problems

• Maintenance scheduling and record-keeping

• Training and development of maintenance staff

• Continuous improvement of maintenance processes

• Examples: oil ...read more
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Q2. What are the benefits of maintenance?
Ans. 
Maintenance has several benefits including increased equipment lifespan, improved safety, reduced downtime, and cost savings.
• Increased equipment lifespan: Regular maintenance helps identify and address issues before they become major problems, extending the lifespan of equipment.

• Improved safety: Maintenance ensures that equipment is functioning properly, reducing the risk of accidents and injuries.

• Reduced downtime: Reg...read more
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An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity.

Benefits of maintenance of electrical instrument

Q1. How to measure current
Ans. 
Current can be measured using an ammeter, which measures the flow of electric charge in a circuit.
• Use an ammeter to measure current

• Connect the ammeter in series with the circuit

• Ensure the ammeter is set to the appropriate range for the expected current

• Read the current value displayed on the ammeter

• Example: To measure the current flowing through a light bulb, connect the ammeter in series with the bulb and read the disp
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Q2. When we see technical issues, then what to do?
Ans. 
When encountering technical issues, it is important to follow a systematic approach to identify, troubleshoot, and resolve the problem.
• Start by gathering information about the issue, such as error messages, symptoms, and any recent changes or events that may have triggered the problem.

• Analyze the available data to narrow down the possible causes of the issue.

• Use diagnostic tools and techniques to further investigate an...read more
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Q3. Full form of MCB and benefits?
Ans. 
MCB stands for Miniature Circuit Breaker. It is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.
• MCB is a type of circuit breaker that automatically switches off the electrical circuit when it detects an overload or short circuit.

• It is commonly used in residential and commercial buildings to protect electrical appliances and wiring from damage.

• MCBs are more ...read more
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Q1. What are your Strong technical aspects?
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Q1. How to calculate Boiler direct & indirect efficiency ?
Ans. 
Boiler efficiency can be calculated by measuring the heat input and heat output of the boiler.
• Calculate the heat input by measuring the fuel flow rate, fuel calorific value, and fuel consumption.

• Calculate the heat output by measuring the steam flow rate and steam enthalpy.

• Direct efficiency = (Heat output / Heat input) * 100%

• Indirect efficiency = Direct efficiency * Boiler efficiency of other components (like economizer
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Q2. What is the monthly maintenance cost of your section ?
Ans. 
The monthly maintenance cost of my section is approximately $10,000.
• The monthly maintenance cost includes expenses for spare parts, labor, equipment rental, and utilities.

• Regular maintenance tasks such as lubrication, inspections, and repairs contribute to the overall cost.

• Cost may vary depending on the size of the section, age of equipment, and frequency of maintenance activities.
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Q1. Some technical question about your department
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Q1. Hr round not good worst hr culture
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Q1. About your self and wasting your time
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Q1. How induction motor started
Ans. 
An induction motor starts when a rotating magnetic field is created by the stator winding, inducing current in the rotor.
• Induction motors start by using the principle of electromagnetic induction.

• The stator winding is energized with a three-phase AC current, creating a rotating magnetic field.

• This rotating magnetic field induces a current in the rotor, which in turn creates a magnetic field.

• The interaction between the ...read more
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Q2. What's is your father name
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Q3. Transformer working, also induction Furnace working &basic principle
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Q1. Machines information
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Q2. All machines and all problems.. solve the maintenance manager
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Q1. Tell me about yourself
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Q2. Where have you worked before this
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Q3. What information do you have?
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Q4. What work did you do in the other company before this?
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Information about the project

Q1. Information about machines
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Q2. Axis of the machine
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