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Jbm Nmpl Maintenance Trainee Interview Questions and Answers
6 Interview questions
Star and delta connections are two common methods used to connect three-phase electrical systems.
Star connection, also known as Wye connection, is formed by connecting all three phases together at a common point and connecting the other ends to the respective loads.
Delta connection, also known as Mesh connection, is formed by connecting the end of one phase to the start of the next phase in a circular loop.
Star co...
An auto transformer is a type of transformer that has a single winding with multiple taps.
Auto transformers have a common winding for both primary and secondary coils.
They are used to step up or step down voltage levels.
Auto transformers are more efficient and compact compared to conventional transformers.
They are commonly used in power transmission and distribution systems.
Example: A 220V to 110V auto transformer...
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.
The primary winding is connected to the power source, while the ...
Voltage neutral refers to the point in an electrical system where the voltage is close to zero.
Voltage neutral is the reference point in an electrical circuit where the voltage is considered to be zero.
It is typically the midpoint between the positive and negative terminals of a power source.
In a balanced three-phase system, the neutral conductor carries the current resulting from the imbalance of the three phases...
The color code of 3-phase supply varies depending on the country and electrical standards.
In the United States, the color code for 3-phase supply is typically black, red, and blue.
In Europe, the color code is often brown, black, and gray.
Other countries may have different color codes, so it is important to consult local electrical standards.
The color coding helps identify the different phases and ensure proper ele...
Improving power factor involves reducing reactive power and increasing the ratio of real power to apparent power.
Install power factor correction capacitors to offset reactive power.
Avoid using inefficient or oversized motors and equipment.
Implement energy-efficient lighting systems.
Optimize the operation of power factor correction equipment.
Educate employees on energy conservation practices.
Jbm Nmpl Maintenance Trainee Interview Experiences
1 interview found
Anonymous
I applied via Campus Placement and was interviewed before Jul 2021. There were 4 interview rounds.
General mathematics, English, Reasoning
(6 Questions)
- Q1. How to improve power factor
- Ans.
Improving power factor involves reducing reactive power and increasing the ratio of real power to apparent power.
Install power factor correction capacitors to offset reactive power.
Avoid using inefficient or oversized motors and equipment.
Implement energy-efficient lighting systems.
Optimize the operation of power factor correction equipment.
Educate employees on energy conservation practices.
- Q2. What is the colour code of 3phase supply
- Ans.
The color code of 3-phase supply varies depending on the country and electrical standards.
In the United States, the color code for 3-phase supply is typically black, red, and blue.
In Europe, the color code is often brown, black, and gray.
Other countries may have different color codes, so it is important to consult local electrical standards.
The color coding helps identify the different phases and ensure proper electric...
- Q3. What is the voltage neutral
- Ans.
Voltage neutral refers to the point in an electrical system where the voltage is close to zero.
Voltage neutral is the reference point in an electrical circuit where the voltage is considered to be zero.
It is typically the midpoint between the positive and negative terminals of a power source.
In a balanced three-phase system, the neutral conductor carries the current resulting from the imbalance of the three phases.
The ...
- Q4. What is transformer and working
- Ans.
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.
The primary winding is connected to the power source, while the secon...
- Q5. What is star and delta connection
- Ans.
Star and delta connections are two common methods used to connect three-phase electrical systems.
Star connection, also known as Wye connection, is formed by connecting all three phases together at a common point and connecting the other ends to the respective loads.
Delta connection, also known as Mesh connection, is formed by connecting the end of one phase to the start of the next phase in a circular loop.
Star connect...
- Q6. What is auto transformer
- Ans.
An auto transformer is a type of transformer that has a single winding with multiple taps.
Auto transformers have a common winding for both primary and secondary coils.
They are used to step up or step down voltage levels.
Auto transformers are more efficient and compact compared to conventional transformers.
They are commonly used in power transmission and distribution systems.
Example: A 220V to 110V auto transformer can ...
(4 Questions)
- Q1. Why we will hire you
- Q2. What is your weakness
- Q3. What is your strength
- Q4. Tell me about your self
Interview Preparation Tips
- Electrical Machines
- Power Plant
- Electronics
- Electric traction
Top trending discussions
Interview questions from similar companies
I applied via Naukri.com and was interviewed in Jul 2019. There were 3 interview rounds.
Interview Questionnaire
5 Questions
- Q1. What's process engineering works
- Ans.
Process engineering involves designing, optimizing, and managing industrial processes to improve efficiency and productivity.
Process engineering focuses on analyzing and improving processes in various industries such as manufacturing, chemical, and pharmaceutical.
It involves identifying bottlenecks, reducing waste, and implementing process improvements to enhance productivity.
Process engineers use tools like process fl...
- Q2. What's the difference between cp and pp
- Ans.
cp and pp are both commands in Unix-like operating systems, but they have different functionalities.
cp stands for 'copy' and is used to copy files or directories from one location to another.
pp stands for 'print and pause' and is used to print files with pagination, pausing after each page.
cp can be used to create a duplicate of a file or directory, while pp is used for printing files in a controlled manner.
Example: cp...
- Q3. What's control plan
- Ans.
A control plan is a documented procedure that outlines the steps and measures taken to ensure quality and consistency in a manufacturing process.
Control plans are commonly used in industries such as automotive, aerospace, and electronics.
They include details on the process steps, key characteristics, measurement methods, and acceptable tolerances.
Control plans help identify potential risks, prevent defects, and ensure ...
- Q4. What's smed
- Ans.
SMED stands for Single Minute Exchange of Die. It is a lean manufacturing technique used to reduce the time it takes to change over a production process.
SMED is used to minimize downtime during changeovers
It focuses on separating internal and external setup tasks
The goal is to convert as many internal setup tasks to external setup tasks
By reducing setup time, production flexibility and efficiency are improved
- Q5. What's capex
- Ans.
Capex stands for capital expenditure, which refers to the funds used by a company to acquire, upgrade, or maintain physical assets.
Capex is an investment made by a company to purchase or improve long-term assets such as buildings, equipment, or technology.
It is different from operational expenses (opex) which are ongoing costs to run the business.
Capex is typically planned and budgeted for in advance.
Examples of capex ...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Do you know about SAP
- Ans.
SAP is an enterprise resource planning software used for managing business operations and customer relations.
SAP stands for Systems, Applications, and Products in Data Processing
It is used by companies to manage their business operations such as finance, sales, procurement, and inventory management
SAP also offers customer relationship management (CRM) software to manage interactions with customers
It is widely used in i...
- Q2. What Tcodes do you use
- Ans.
I use various Tcodes depending on the task at hand.
For material master data maintenance, I use MM01, MM02, and MM03.
For purchase order creation and maintenance, I use ME21N and ME22N.
For inventory management, I use MIGO and MB51.
For production planning, I use MD61 and MD04.
For quality management, I use QA32 and QE51.
For sales and distribution, I use VA01, VA02, and VA03.
- Q3. How to punch production in SAP
- Ans.
To punch production in SAP, follow these steps:
Create a production order in SAP
Release the production order
Confirm the production order
Perform goods receipt for the production order
Perform goods issue for the production order
Interview Preparation Tips
Skills evaluated in this interview
I applied via Recruitment Consultant and was interviewed in Feb 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. General questions from my experince Background.
Part programming for VMC and tool selection
(2 Questions)
- Q1. Why do you want to join this company?
- Q2. What is your salary expected?
Interview Preparation Tips
Problem solving ability,
Technical knowledge,
Leadership.
(1 Question)
- Q1. 5S , LINE BALACING, KAIZEN ,FMEA
Interview Preparation Tips
Interview Questionnaire
4 Questions
- Q1. Difference between VA & VE
- Ans.
VA is value analysis, while VE is value engineering. Both are cost-saving techniques used in product development.
VA is a systematic review of a product's components and functions to identify areas where cost can be reduced without affecting performance.
VE is a more comprehensive approach that involves rethinking the entire product design to achieve cost savings while improving performance.
VA is typically used in the ea...
- Q2. How to calculate cost of the plastic molding components
- Ans.
The cost of plastic molding components can be calculated by considering factors such as material cost, tooling cost, labor cost, and overhead cost.
Determine the material cost per unit of the component
Calculate the tooling cost, which includes the cost of the mold and any necessary equipment
Factor in the labor cost, which includes the cost of operating the molding machine and any necessary labor for finishing and assemb...
- Q3. Name some polymers
- Ans.
Polymers are large molecules made up of repeating units called monomers. They have a wide range of applications in various fields.
Polyethylene
Polypropylene
Polyvinyl chloride
Polystyrene
Polyester
Polyurethane
Nylon
Teflon
Silicone
Rubber
- Q4. System audits
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Mar 2022. There were 2 interview rounds.
(3 Questions)
- Q1. Mat dena interview, bekaar company hai
- Ans. Join karni hai to minimum 40 % pe karna baad mein koi increment nai hai aur written mein lena offer letter mein bhi. je baad mein mukaar jaate hai
- Q2. Bhai lala company hai
- Q3. No feasility except HR
Interview Preparation Tips
General aptitude test
(2 Questions)
- Q1. By CAD software
- Q2. Drawing knowledge
(1 Question)
- Q1. About your self
(1 Question)
- Q1. Academic knowledge
Interview Preparation Tips
Rahul Y
The first was a technical screening, where I was asked to solve coding problems on a shared platform. The questions tested my ability to think on my feet, focusing on optimizing solutions and writing clean, maintainable code.
This was more interactive, involving a whiteboard session where I had to design a system from scratch. The interviewer challenged my assumptions and pushed me to consider edge cases, scalability, and performance. It was intense, but it made me appreciate the importance of clear, structured thinking.
(1 Question)
- Q1. There was a behavioral interview where I was asked about my past experiences, teamwork, and how I handled challenges. This round emphasized the company’s culture and how I might fit into their team.
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