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EcoEnergy Insights Project Engineer Interview Questions and Answers
EcoEnergy Insights Project Engineer Interview Experiences
3 interviews found
Anonymous
I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 4 interview rounds.
Interview Questionnaire
4 Questions
- Q1. I was asked questions on Basics of Electrical and Mechanical engineering in the technical round as I was not aware of the area the company was into. Since I was recruited as a contract employee, the interv...
- Q2. What cycle does a refrigerator woek on?
- Ans.
A refrigerator works on the vapor compression cycle.
A refrigerator uses a compressor to compress refrigerant gas.
The compressed gas then flows through a condenser where it releases heat and becomes a high-pressure liquid.
The high-pressure liquid passes through an expansion valve, which reduces its pressure and temperature.
The low-pressure liquid then enters the evaporator, where it absorbs heat from the surroundings an...
- Q3. What is a capacitor/capacitance
- Ans.
A capacitor is an electronic component that stores and releases electrical energy by accumulating and holding a charge.
Capacitance is the measure of a capacitor's ability to store charge.
Capacitors are commonly used in electronic circuits to smooth out voltage fluctuations, filter signals, and store energy.
They consist of two conductive plates separated by a dielectric material.
The capacitance value determines the amou...
- Q4. What is potential difference
- Ans.
Potential difference is the difference in electric potential energy per unit charge between two points in an electric field.
Potential difference is also known as voltage.
It is measured in volts (V).
Potential difference is the driving force that causes electric charges to flow in a circuit.
It is the work done per unit charge in moving a charge from one point to another in an electric field.
For example, when a battery is...
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Feb 2024. There was 1 interview round.
Quite easy it was of basic aptitude questions with logical reasoning
Interview Preparation Tips
(1 Question)
- Q1. About Electrical controllers
Interview questions from similar companies
Selected
It had a 2 programs with easy and medium level of coding programs, please go through the recent interview problems asked in wipro
(5 Questions)
- Q1. What is Object oriented programming
- Ans.
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
OOP focuses on creating objects that interact with each other to solve problems
Encapsulation, inheritance, and polymorphism are key principles of OOP
Examples of OOP languages include Java, C++, and Python
- Q2. What is multi threading
- Ans.
Multi threading is a programming concept where multiple threads within a process execute independently to improve performance.
Allows for concurrent execution of tasks within a single process
Improves performance by utilizing multiple CPU cores
Requires careful synchronization to avoid race conditions
Examples include web servers handling multiple requests simultaneously
- Q3. Why is java not 100% oop
- Ans.
Java is not 100% OOP because it supports primitive data types and static methods.
Java has primitive data types like int, double, etc. which are not objects.
Java allows static methods which do not require an instance of a class to be called.
Java also has the concept of wrapper classes to convert primitive data types to objects.
- Q4. What are collections in java
- Ans.
Collections in Java are classes and interfaces that provide a way to store and manipulate groups of objects.
Collections provide dynamic data structures like List, Set, and Map.
They offer methods to add, remove, and manipulate elements in the collection.
Examples include ArrayList, LinkedList, HashSet, and HashMap.
- Q5. Internal working of hash map
- Ans.
A hash map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
Hash map uses a hash function to determine the index of the key-value pair in the underlying array.
Collision resolution techniques like chaining or open addressing are used to handle situations where multiple keys hash to the same index.
Hash maps typically have O(1) average time complexity for i...
Divyanshu Sharma
I applied via Naukri.com and was interviewed in Oct 2024. There were 2 interview rounds.
Basic cofing questions
(2 Questions)
- Q1. Advanced tech questions
- Q2. Palindrome related coding questions
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Apr 2024. There were 2 interview rounds.
Good team work and good communication skill
(5 Questions)
- Q1. Good communication
- Q2. Team work and leading
- Q3. Technical skill
- Q4. Improving compny level
- Ans.
Improving company level involves implementing efficient processes, fostering a positive work culture, and utilizing technology.
Implementing lean manufacturing principles to streamline operations
Encouraging open communication and collaboration among team members
Investing in training and development programs for employees
Leveraging technology to automate repetitive tasks and improve productivity
- Q5. Improving networking
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
(3 Questions)
- Q1. Explain OOPs concept in JAVA
- Ans.
OOPs concept in JAVA refers to Object-Oriented Programming principles like encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: Bundling data and methods that operate on the data into a single unit (object).
Inheritance: Allows a class to inherit properties and behavior from another class.
Polymorphism: Ability of a method to do different things based on the object it is acting upon.
Abstraction: Hidin...
- Q2. Explain Memory management in JAVA
- Ans.
Memory management in JAVA involves allocation, usage, and deallocation of memory for objects and variables.
Java uses automatic memory management through garbage collection
Memory is allocated on the heap for objects and on the stack for local variables
Java Virtual Machine (JVM) manages memory allocation and deallocation
Memory leaks can occur if objects are not properly dereferenced
- Q3. Explain Reflection in JAVA
- Ans.
Reflection in Java allows programs to inspect or modify their own structure at runtime.
Reflection allows access to class information, fields, methods, and constructors at runtime.
It is commonly used in frameworks like Spring and Hibernate for dependency injection and ORM.
Example: Using reflection to dynamically load classes or invoke methods based on user input.
Interview Preparation Tips
Skills evaluated in this interview
hari
(1 Question)
- Q1. Self intro about our previous work
(1 Question)
- Q1. What is the purpose of the test.startTest() and test.stopTest() methods in programming?
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed in May 2024. There were 2 interview rounds.
Conversation skills and knowledge about project
My knowledge about project work
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Associate Engineer
87
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|  ₹2.4 L/yr - ₹6.1 L/yr |
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Project Engineer
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| ₹2.5 L/yr - ₹4.5 L/yr |
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Engineer
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| ₹3.8 L/yr - ₹7 L/yr |
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6
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| ₹7 L/yr - ₹13.8 L/yr |
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Data Analyst
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