Sl Lumax Maintenance Manager Interview Questions and Answers for Experienced

Q1. About to hpdc m/c
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Q2. About to safety and maintenance
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Q3. About to electrical device as like star ,delta connection and plc
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Q1. Discuss the salary
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Q1. Light. Fan should be working properly
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Q2. Area should be neat and clen
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Q3. 5s implementing properly
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5S implementation involves organizing and maintaining a clean, efficient workplace.
• Sort - remove unnecessary items from the workplace

• Set in order - organize remaining items in a logical manner

• Shine - clean and inspect the work area regularly

• Standardize - establish guidelines for maintaining the first 3 S's

• Sustain - ensure the practices are consistently followed over time
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Q4. All working tables should be clean and dust free
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Q5. Dustbin should be empty
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Q1. Mashine shop maintenance
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Q2. CNC VMC maintenance maintenance
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Q1. Ball screw and LM guard type and work
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Ball screws are used for converting rotational motion into linear motion, while LM guides are used for guiding linear motion.
• Ball screws use ball bearings to reduce friction and increase efficiency in converting rotational motion into linear motion.

• LM guides use linear motion bearings to provide smooth and precise linear motion guidance.

• Ball screws are commonly used in CNC machines, robotics, and other precision machin...read more
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Q2. Ball screw and magachine and spindle motor removed process
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Q1. Previous company salery details
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Q1. Ball screw remove process
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Q2. LM guard and LM rail remove process
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Q1. Your qualification and who is in your house
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Diploma in Electrical Engineering and father and mother
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Q2. Transformers working principle
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Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
• Transformers have two coils of wire, known as primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.

• Transformers can step up or...read more
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Q3. Difference between RCCB and MCB
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RCCB is a Residual Current Circuit Breaker that trips when it detects a leakage current, while MCB is a Miniature Circuit Breaker that trips when there is an overload or short circuit.
• RCCB protects against electric shock by detecting imbalance in current flow, commonly used in wet areas like bathrooms.

• MCB protects against overloads and short circuits, commonly used in residential and commercial buildings.

• RCCB has a sen...read more
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Q4. 20 hp motor Full load current
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P=√3 vi cos¢ 1 ho=746 Watt Full load current in 30 amp
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Q5. Vccb work principle an
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Vccb stands for Vacuum Circuit Breaker. It works on the principle of extinguishing the arc in a vacuum environment.
• VCCB uses a vacuum as the arc quenching medium instead of air or oil.

• When the contacts of the breaker open, the arc is drawn into the vacuum and extinguished.

• This method ensures faster arc extinction and reduces the risk of fire hazards.

• VCCBs are commonly used in high voltage applications where quick and r
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Q1. Type of MCB and relay
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Miniature Circuit Breakers (MCBs) and relays are commonly used in electrical systems for protection and control.
• MCBs are used to protect electrical circuits from overloads and short circuits by automatically switching off the circuit when a fault is detected.

• Relays are used to control the operation of electrical circuits by opening or closing contacts based on input signals.

• Common types of MCBs include single-pole, dou...read more
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Q2. Working on mcb and contactor
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Q1. What is bearing and types
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A bearing is a mechanical component that supports the rotating shaft of a machine, reducing friction and enabling smooth movement.
• Bearings are used in various applications such as automobiles, industrial machinery, and household appliances.

• There are several types of bearings, including ball bearings, roller bearings, and plain bearings.

• Ball bearings consist of balls enclosed between two rings and are commonly used in a...read more
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Q2. What is types of bearing
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Bearings are machine elements that reduce friction between moving parts. There are several types of bearings.
• Plain bearings

• Rolling element bearings

• Jewel bearings

• Fluid bearings

• Magnetic bearings
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Q3. There are six types.
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Self Introduction and communication English

Q1. Transformer breaker related questions, AC/DC Motors starters, Hardware circuits and PLC logics relay consupt , injuction moulding related questions
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Q1. Describe your education and qualifications
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