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L&T Water & Effluent Treatment Interview Questions and Answers
6 Interview questions
Pump seal replacement can be done by following proper procedures and using the right tools.
Ensure the pump is turned off and disconnected from power source before starting the replacement.
Remove the old seal carefully, taking note of its orientation and position.
Clean the seal chamber thoroughly before installing the new seal.
Apply lubricant or sealant as recommended by the manufacturer.
Reassemble the pump and tes...
Porcelain and composite insulators are commonly used in 132kV transmission lines for their durability and electrical properties.
Porcelain insulators are widely used due to their high mechanical strength and resistance to environmental factors.
Composite insulators, made from polymer materials, offer lightweight and high-performance characteristics.
Insulators must withstand high voltage and prevent electrical leakag...
Various tower types are used at 45° angle points, primarily for supporting overhead power lines.
1. Angle Towers: Designed to support the change in direction of the transmission line.
2. Terminal Towers: Used at the end of a transmission line to connect to substations.
3. Suspension Towers: Allow for the sagging of cables while maintaining tension.
4. Tension Towers: Used where the line experiences high tension, often...
CTs and PTs in substations ensure accurate measurement and protection of electrical systems.
Current Transformers (CTs) are used for measuring high currents and providing isolation.
Potential Transformers (PTs) step down high voltages for measurement and protection.
CTs can be classified into wound, bar, and toroidal types, e.g., Wound CTs for high accuracy.
PTs can be either electromagnetic or capacitive, e.g., Capac...
Bearings are used to reduce friction between two moving parts while refrigeration is the process of cooling a space or substance.
Bearings work on the principle of reducing friction between two moving parts by providing a smooth surface for them to roll or slide against each other.
Refrigeration works on the principle of removing heat from a space or substance, which causes it to cool down.
Bearings are commonly used...
Designing parameters of heat exchanger involves determining heat transfer rate, surface area, fluid flow rate, and material selection.
Determine the heat transfer rate required for the application
Select appropriate fluids and their flow rates
Calculate the surface area required for heat transfer
Choose suitable materials for construction based on operating conditions
Consider factors such as pressure drop, fouling, an...
L&T Water & Effluent Treatment Interview Experiences
10 interviews found
Post Graduate Engineer Trainee [pget] Interview Questions & Answers
harsh gupta
posted on 9 Dec 2021
I applied via Campus Placement and was interviewed before Dec 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. Principal of bearings, refrigeration
- Ans.
Bearings are used to reduce friction between two moving parts while refrigeration is the process of cooling a space or substance.
Bearings work on the principle of reducing friction between two moving parts by providing a smooth surface for them to roll or slide against each other.
Refrigeration works on the principle of removing heat from a space or substance, which causes it to cool down.
Bearings are commonly used in m...
- Q2. Designing parameters of heat exchanger,
- Ans.
Designing parameters of heat exchanger involves determining heat transfer rate, surface area, fluid flow rate, and material selection.
Determine the heat transfer rate required for the application
Select appropriate fluids and their flow rates
Calculate the surface area required for heat transfer
Choose suitable materials for construction based on operating conditions
Consider factors such as pressure drop, fouling, and cor...
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed in Nov 2023. There were 2 interview rounds.
(1 Question)
- Q1. Environmental gate questions
(1 Question)
- Q1. General hr related questions
Interview Preparation Tips
Aptitude questions basic level easy medium
Selected
I applied via Company Website and was interviewed in Feb 2023. There were 2 interview rounds.
(2 Questions)
- Q1. About job discussion
- Q2. Experience, working capabilities
Interview Preparation Tips
I applied via Recruitment Consulltant and was interviewed in Jun 2023. There were 3 interview rounds.
(1 Question)
- Q1. Mostly about Piping materials valves and layout concepts, piperack and other concepts
(2 Questions)
- Q1. Tell about yourself and your profile
- Q2. Salary discussion and negotiation
Selected
I applied via Walk-in and was interviewed in Nov 2022. There were 3 interview rounds.
(1 Question)
- Q1. Questions about what you have done previous work.
(1 Question)
- Q1. Why you want join and how much package you are expecting.
Interview Preparation Tips
Biswajit Tripathy
Interview Questionnaire
10 Questions
- Q1. 132/33/11Kv Transmission line phase to phase clearance
- Ans. 132kv phase to phase 3mtr, 33kv phase to phase clearance 1.5mtr and 11kv phase to phase clearance 0.9mtr maintain
- Q2. How many types of tower used in 45° Angel point.
- Ans.
Various tower types are used at 45° angle points, primarily for supporting overhead power lines.
1. Angle Towers: Designed to support the change in direction of the transmission line.
2. Terminal Towers: Used at the end of a transmission line to connect to substations.
3. Suspension Towers: Allow for the sagging of cables while maintaining tension.
4. Tension Towers: Used where the line experiences high tension, often at a...
- Q3. What types of CT & PT used for sub- station
- Ans.
CTs and PTs in substations ensure accurate measurement and protection of electrical systems.
Current Transformers (CTs) are used for measuring high currents and providing isolation.
Potential Transformers (PTs) step down high voltages for measurement and protection.
CTs can be classified into wound, bar, and toroidal types, e.g., Wound CTs for high accuracy.
PTs can be either electromagnetic or capacitive, e.g., Capacitive...
- Q4. What is the survey done in the new transmission line.
- Q5. Preliminary survey & finally survey report approved after work starting
- Q6. What should be the clearance of 33kv line crossing.
- Q7. What type of motor used in your pump house.
- Q8. What types of conductor used in your site.
- Ans. 3types of conductor used at our site. Conductor name-AAAC DOG, AAAC PANTHER & ACSR PANTHER.
- Q9. Which insulator used in 132 transmission line.
- Ans.
Porcelain and composite insulators are commonly used in 132kV transmission lines for their durability and electrical properties.
Porcelain insulators are widely used due to their high mechanical strength and resistance to environmental factors.
Composite insulators, made from polymer materials, offer lightweight and high-performance characteristics.
Insulators must withstand high voltage and prevent electrical leakage, en...
- Q10. 90kn & 120kn long rod insulator used in 132kv transmission line.
Interview Preparation Tips
(1 Question)
- Q1. Tell me something about yourself and your family member
Interview Preparation Tips
Selected
I applied via Approached by Company and was interviewed before Aug 2022. There were 3 interview rounds.
Some points of coding test and technically test
(1 Question)
- Q1. How can pump seal replacement
- Ans.
Pump seal replacement can be done by following proper procedures and using the right tools.
Ensure the pump is turned off and disconnected from power source before starting the replacement.
Remove the old seal carefully, taking note of its orientation and position.
Clean the seal chamber thoroughly before installing the new seal.
Apply lubricant or sealant as recommended by the manufacturer.
Reassemble the pump and test for...
Project Manager-Production/Manufacturing/Maintenance Interview Questions & Answers
Anonymous
posted on 6 Aug 2021
I applied via Walk-in and was interviewed in Jul 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Sir i am shailesh kumar pursuing diploma in mechanical engineering with spcielization in tool engineering
Interview Preparation Tips
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