Nalco water Interview Questions, Process, and Tips

Q1. What is the CPC CABLE
Ans. 
CPC CABLE stands for Circuit Protective Conductor cable, which is used for earthing and providing protection against electric shock.
• CPC CABLE is also known as the earth wire in electrical installations.

• It is typically colored green and yellow to distinguish it from other cables.

• The CPC CABLE is connected to metal parts of electrical equipment to prevent electric shock in case of a fault.
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Q2. How to work ATS
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Q3. What is the High pot test done for?
Ans. 
High pot test is done to check the insulation of electrical equipment.
• High pot test is done to ensure the insulation in electrical equipment can withstand high voltage without breaking down.

• It helps in identifying any weaknesses or defects in the insulation that could lead to electrical hazards.

• The test involves applying a higher than normal voltage to the equipment to see if the insulation can handle it.

• High pot testi...read more
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Q4. What is spacifficatin of the Ht cable?
Ans. 
HT cables are high tension cables used for transmitting electricity at high voltages.
• HT cables are designed to carry high voltage electricity, typically above 11kV.

• They are insulated to prevent leakage of current and ensure safety.

• HT cables are usually made of materials like cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR).

• They are often armored to protect against physical damage and environmental fa...read more
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Q5. What is different in RCBO AND RCCB , ELCB ?
Ans. 
RCBO combines the functions of an RCD and a miniature circuit breaker, while RCCB and ELCB are older versions of RCDs.
• RCBO combines overcurrent protection (like a circuit breaker) with earth fault protection (like an RCD)

• RCCB is an older version of RCD that only detects earth faults

• ELCB is an even older version of RCD that detects earth faults by measuring the current imbalance between live and neutral wires

• RCBO is com...read more
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Q6. What is the ten delta test and which equipment in used ten delta test ?
Ans. 
The ten delta test is a diagnostic test used to assess the condition of power transformers.
• The ten delta test measures the change in power factor between the initial and final stages of a transformer's life.

• It is used to detect insulation deterioration and moisture content in the transformer oil.

• Equipment used for the ten delta test includes a power factor test set, a transformer turns ratio tester, and a megohmmeter.
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Q1. What work in UPM in data centre
Ans. 
UPM in data centre involves managing electrical systems, ensuring uptime, and implementing energy efficiency measures.
• Managing electrical systems to ensure continuous power supply

• Implementing energy efficiency measures to reduce costs

• Monitoring and maintaining backup power systems

• Troubleshooting electrical issues to minimize downtime

• Coordinating with other departments for electrical maintenance schedules
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Q2. How to work issholation transformer
Ans. 
Isolation transformers are used to isolate electrical devices from the power source for safety and protection.
• Isolation transformers have primary and secondary windings that are electrically separated to prevent direct current flow between the input and output.

• They are commonly used in medical equipment, data centers, and sensitive electronic devices to protect them from electrical noise and voltage spikes.

• Isolation tr...read more
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Q1. Why u come here and get lost from here
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Q2. Dont you have any othervjob in hand
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Q1. Go to other company and enjoyed your lifr Why u like to join 3rd class compny.
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Q2. Why u not understanding that this company is not good.
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Excell power point tally and faltu test

Q1. Behavioural questions only
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Q1. Water treatment basics , technical knowledge and experience, accomplishment
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Q1. General Info Career Aspirations Reason for Change Salary Expectations, Discussions and Negotiations. (Ensure to put all facts including your future earnings and esops while negotiating)
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Q1. 1) Technical Questions regarding Product aspects 2) Ways of Working 3) Skillset demonstration with Examples 4) Experience sharing discussion
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Q1. 1) Experience Sharing With Examples 2) Skillset Demonstration 3) Business Understanding 4) Skillsets understanding 5) Situational analysis 6) People Management Skills
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Technical and general awareness questions

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Q1. Questions related to thermo heat transfer mass transfer
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Q1. Asked about the goals strengths
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Q1. Asked basic questions
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