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Refu Drive India Senior Engineer Mechanical Interview Questions and Answers
Refu Drive India Senior Engineer Mechanical Interview Experiences
1 interview found
Selected
I applied via Approached by Company and was interviewed before Mar 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What you like in REFU
- Q2. What is oxidation process,bus bar calculation
- Ans.
Oxidation process is a chemical reaction where a substance loses electrons, while bus bar calculation involves determining the size and material of bus bars for electrical distribution.
Oxidation process involves the loss of electrons by a substance, leading to the formation of oxides.
Bus bar calculation is the process of determining the size, material, and configuration of bus bars based on the electrical load and dist...
(2 Questions)
- Q1. Busbar calculator
- Q2. What Cooling plates
- Ans.
Cooling plates are devices used to dissipate heat from electronic components or machinery.
Cooling plates are typically made of materials with high thermal conductivity, such as aluminum or copper.
They are often used in conjunction with thermal interface materials like thermal paste or pads.
Cooling plates can be passive (relying on natural convection) or active (using fans or liquid cooling systems).
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Interview questions from similar companies
Rahul Kandalam
Interview Questionnaire
7 Questions
- Q1. Standard HR: Tell me about yourself, why this company and how do you think we help you reach your goals?
- Q2. Tell me one cool thing you got to do at IIT
- Ans.
I got to participate in a robotics competition at IIT
Designed and built a robot from scratch
Programmed the robot to complete tasks autonomously
Competed against other teams from different colleges
Learned valuable skills in engineering and teamwork
- Q3. Why did you choose IIT and do you regret it? What's different here?
- Ans.
I chose IIT for its reputation and opportunities. No regrets. The environment is competitive and challenging.
IIT has a strong reputation for producing successful graduates
I was attracted to the opportunities for research and innovation
The academic environment is highly competitive and challenging
I have no regrets about my decision to attend IIT
- Q4. What is a portfolio? How do you measure risk?
- Ans.
A portfolio is a collection of investments. Risk can be measured through standard deviation, beta, or value at risk.
A portfolio is a combination of different investments such as stocks, bonds, and mutual funds.
The purpose of a portfolio is to diversify investments and reduce risk.
Risk can be measured through standard deviation, which measures the volatility of returns.
Beta measures the sensitivity of a portfolio to mar...
- Q5. What is beta? What is Value at risk? What is formula for beta?
- Ans.
Beta is a measure of a stock's volatility. Value at risk is a statistical measure of potential losses. Formula for beta is Covariance(Stock, Market) / Variance(Market).
Beta measures a stock's sensitivity to market movements.
Value at risk is the maximum potential loss that an investment portfolio may suffer within a given time frame.
Beta formula is calculated by dividing the covariance of the stock and market returns by...
- Q6. What is covariance? How does it measure sensitivity? What is volatility?
- Ans.
Covariance measures the relationship between two variables. It measures sensitivity by indicating the direction of the relationship.
Covariance is a statistical measure that shows how two variables are related to each other.
It measures the direction of the relationship between two variables.
A positive covariance indicates that the two variables move in the same direction.
A negative covariance indicates that the two vari...
- Q7. What is WACC? How do value a company? Suggest a method that can help you decide on project undertaking?
- Ans.
WACC is the weighted average cost of capital. To value a company, one can use various methods such as DCF, comparables, or precedent transactions. A method to decide on project undertaking is NPV analysis.
WACC is the average cost of all the capital a company has raised
To value a company, one can use DCF, comparables, or precedent transactions
DCF involves projecting future cash flows and discounting them back to present...
Interview Preparation Tips
Experience: It was not tough. Practiced lots of quant questions.Couldn't manage time for verbal. Overall, it was okay! I lost five minutes over one question.
Tips: Face the verbal questions at the end if there is no specific cut off.Score in quant and then touch verbal part.Don't spend more than 2 mins on a question.
Duration: 60 minutes
Total Questions: 60
Round: Interview
Experience: It was very informal and I told them that I got to work as a student consultant for a space mission when she asked me about the cool stuff I did here. I tried to impress her by telling her how I made use of my time here at IIT and how important it is to use the opportunities when they are at arm length distance.
Tips: Be honest and impress HR. Try to smile and be active. They like active and positive people.And prepare for standard HR questions.
Round: Interview
Experience: It was a pure finance interview as my resume as completely finance type.I told all questions without any issues and these are standard questions if you expect finance type profile.
Tips: Be sure of what you put in your resume. If you cannot answer what's in your resume, you will be screwed.Try to steer your interview towards your stronghold and then make it impressive.If you don't know anything, let them know. It is totally fine.
Skill Tips: "Focus your skills when they say: Tell me about yourself.So they will get back to you saying: "You were saying you are strong in this. Can you elaborate". Just screw it."
Skills: Finance Knowledge, Analytical
College Name: IIT Madras
Sanjyot Thete
Interview Questionnaire
5 Questions
- Q1. Why do you want to work with us?
- Ans.
I am impressed with the company's reputation and growth potential, and I believe my skills and experience align well with the job requirements.
I have researched the company and am impressed with its reputation and growth potential
I believe my skills and experience align well with the job requirements
I am excited about the opportunity to work with a talented team and contribute to the company's success
- Q2. Why should we hire you?
- Ans.
I have the necessary skills, experience, and passion to excel in this role.
I have a proven track record of success in similar roles.
I am a quick learner and adaptable to new situations.
I am passionate about this industry and eager to contribute to its growth.
I have excellent communication and teamwork skills.
I am committed to delivering high-quality work and exceeding expectations.
- Q3. If we need you to transfer to another place ASAP and you haven't completed your current assignment, how would you handle it?
- Ans.
I would prioritize completing my current assignment and then discuss the transfer with my supervisor to ensure a smooth transition.
I would communicate with my supervisor to understand the urgency of the transfer
I would prioritize completing my current assignment to the best of my ability
I would discuss the transfer with my supervisor to ensure a smooth transition
I would try to complete as much work as possible before l...
- Q4. What's the maximum number of runs a batsman can score in an ODI?
- Ans.
A batsman can score a maximum of 264 runs in an ODI.
The maximum number of runs a batsman can score in an ODI is limited by the number of balls bowled and the number of boundaries hit.
The maximum number of balls bowled in an ODI is 300, assuming no extras are bowled.
If a batsman hits a boundary off every ball they face, they can score a maximum of 240 runs.
If a batsman hits sixes off every ball they face, they can score...
- Q5. Two jug problems, where you need to obtain a specified amount of water by using two differently sized jugs
- Ans.
Solving two jug problems to obtain a specified amount of water using differently sized jugs.
Understand the capacity of each jug
Determine the amount of water needed
Fill one jug with water and pour it into the other jug
Repeat until the desired amount is reached
Use the remaining water in the larger jug to measure the remaining amount needed
Consider the possibility of multiple solutions
Interview Preparation Tips
Experience: Was resume shortlisted, nothing great about that.
Tips: Keep up the CPI, but I guess it's too late for that now.
Round: Test
Experience: Test wasn't too difficult. Can be cracked if you're in your game and have a chill mind.
Tips: General aptitude preparation should be started atleast before a month from placements. Solve GATE papers, institute placement tests, read CAT modules and their tips for faster problem solving. English needs time for those who haven't used it much in their childhood. But still the difficulty level of questions in these placement tests is easy.
Round: HR Interview
Experience: Was generally good. Interviewer was young and we could connect.
Tips: It is extremely important that you remain calm. You need to tame that nervousness down. Think of the interview as a general talk with a stranger. Be your natural self. That's when the ideas hit you for the questions you haven't prepared. Practice interviewing with friends and read about the most common questions on the Interwebz.
Round: Puzzle Interview
Experience: Problems were easy. Asked for a pen and paper and slowly solved them.
Tips: Practice puzzles. There are some good sites for this.
Skills: Managing people, Analytical thinking
College Name: IIT BOMBAY
Skills evaluated in this interview
Interview Preparation Tips
Experience: It was a very general aptitude test, including probability reasoning etc.
Tips: practice some CAT papers
Round: HR Interview
Experience: Very basic and general HR questions starting with tell me something about yourself and why this job?
Tips: You should have tailor made answers for tell me about yourself for different sectors/firms, this will help a lot, start preparing on this a month in advance.
College Name: IIT BOMBAY
Interview Preparation Tips
Experience: it was a basic test, CAT level questions and can be easily cleared
Tips: keep your cool, don't panic
Duration: 60 minutes
Total Questions: 60
College Name: IIT BOMBAY
I applied via Campus Placement and was interviewed in Dec 2016. There were 4 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Given a 2d matrix with some D doors and W walls, we need fill distance matrix with minimum distance to the nearest door
- Ans.
Given a 2D matrix with doors and walls, fill distance matrix with minimum distance to the nearest door.
Iterate through the matrix and find the doors
Use Breadth-First Search (BFS) to calculate the minimum distance from each cell to the nearest door
Update the distance matrix with the minimum distances
- Q2. Given a read-only array we want to find kth smallest element in unordered array with O(1) space
- Ans.
Find kth smallest element in unordered array with O(1) space
Use the QuickSelect algorithm to partition the array and find the kth smallest element
Choose a pivot element and partition the array into two subarrays
Recursively partition the subarray that contains the kth smallest element
Repeat until the pivot element is the kth smallest element
Time complexity: O(n) average case, O(n^2) worst case
- Q3. Design question
- Q4. Find friends of friend who already are not friends with you
- Ans.
To find friends of friends who are not already friends with you, we can first find your friends and then their friends excluding yourself and your friends.
Get your list of friends
For each friend, get their list of friends
Exclude yourself and your friends from the final list of friends of friends
Interview Preparation Tips
Experience: It started with an informal talk after he gave his introduction. We talked about the cyclone that was going to be there and what I did in my internship and my previous projects. Then we moved to questions. After solving both questions he asked if I had questions.
Tips: Just walk the interviewer through the solution you're proposing.
Round: Other Interview
Experience: He started with a design question with how to stream an image such that all clients see the same image at the same time. You need to take care of delays, network problems. He kept on adding new elements like compression, streaming, utc time related issues, client rendering delays and so on.
Round: Other Interview
Experience: This was bar-raiser round.
Skills: Design, Algorithms And Data Structures, Graph Theory
College Name: IIT Madras
Skills evaluated in this interview
I was interviewed before Apr 2021.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
It started with an informal talk after he gave his introduction. We talked about the cyclone that was going to be there and what I did in my internship and my previous projects. Then we moved to questions. After solving both questions he asked if I had questions.
- Q1.
Kth Largest Element Problem Statement
Given an array of distinct positive integers and a number 'K', your task is to find the K'th largest element in the array.
Example:
Input:
Array: [2,1,5,6,3,8], K ... - Ans.
Find the Kth largest element in an array of distinct positive integers.
Sort the array in non-increasing order
Return the Kth element from the sorted array
Handle multiple test cases
- Q2.
Orange Rotting Problem Statement
Consider a grid containing oranges. Each cell in this grid can hold one of three integer values:
- Value 0: Represents an empty cell.
- Value 1: Represents a fresh orang...
- Ans.
The task is to determine the minimum time required for all fresh oranges to become rotten in a grid.
Create a queue to store the rotten oranges and their time of rotting.
Iterate through the grid to find the initial rotten oranges and add them to the queue.
Perform BFS by popping each rotten orange from the queue, rot adjacent fresh oranges, and add them to the queue with updated time.
Continue until the queue is empty, ke...
Round duration - 45 minutes
Round difficulty - Easy
This was a design round.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Interview Preparation Tips
Experience: English was unpredictable.. Maths was easy but it will be good if you have practice, logical reasoning requires practice but are interesting
Tips: Leave english comprehensions for the end.. Do not waste too much time on one question even if it appears easy.. attempt the paper in the order of your comfort and mark every questions in case of NO negative marking
Duration: 60 minutes
Round: HR Interview
Tips: Smile!! And think before speaking anything, else you may contradict your own point.. Prepare "Tell me about yourself" well and guide your interview by focusing on your strongest point, you may face more questions on that point.. refer to 64 HR questions book
Round: Stress Interview
Tips: If they are giving you stress, that means they like you.. Relax!! Do not get nervous, thats what they want to check.. Think for the solution to the problem normally, you know you can crack it (Stress interview may be a part of HR, technical, case or any other interview.. you may have to make it out yourself)
Skill Tips: ""
Skills: Puzzles, Speaking skills, Aptitude, guesstimates, Case solving, presentation skills
College Name: IIT Bombay
Business Analyst Interview Questions & Answers
Ola Cabs
Vishnuvardhan Reddy Kotte
posted on 21 Feb 2015
Interview Questionnaire
3 Questions
- Q1. Give some quantifiable factors you can use to rate( for comapny's purpose) among a repository of cab drivers we have?
- Ans.
Quantifiable factors to rate cab drivers for company's purpose
Customer ratings and feedback
Number of completed trips
Average trip duration
Percentage of on-time pickups
Accident and traffic violation history
Vehicle cleanliness and maintenance
Driver punctuality and professionalism
- Q2. If you are on the selection committee of BCCI what would be your criterion for choosing between Yuvraj Singh and Stuart Binny for the World Cup squad?
- Ans.
The criterion for choosing between Yuvraj Singh and Stuart Binny for the World Cup squad would be based on their recent performance, fitness, and team balance.
Evaluate recent performance of both players
Assess fitness levels of both players
Consider team balance and required skill sets
Analyze pitch and weather conditions of the tournament
Take into account the opposition teams and their strengths and weaknesses
- Q3. Some questions on programming (Pseudo Codes )
Interview Preparation Tips
Experience: There were questions on general aptitude like work and time, probability, and some questions were on data interpretation, coding and decoding, etc., most of the questions were very simple...but I felt the data interpretation questions to be a bit tricky (completely my opinion though).. ON THE BASIS OF THIS TEST THEY SHORTLISTED ROUGHLY 15 OUT OF 150 (again a rough figure)
Tips: Manage your time wisely...start with the type of questions you feel comfortable...try to attempt all the questions....improve your speed while practicing.
Duration: 45min minutes
Total Questions: 45
Round: Test
Experience: We were given 3 questions to solve in 30 min duration.Later we were told to walk them through our solution . Two of them were on probability(one random variables and the other on basic probability) and one was on estimating the area of an irregular figure , given some tools.
Tips: Get all the doubts regarding the questions clarified .As you have to explain your solution, it would be helpful if you could pen down all the steps clearly ( as it shows them that your thought process is an organised one). Use pictorial representation if needed. When they propose some other method be open to it and be open to any method they propose and be clear with the method you adopted. Even if you didn't arrive at the final answer, try to communicate your idea on solving the problem( most of the times they will listen to what you say).
Duration: 30min minutes
Total Questions: 3
Round: Other Interview
Experience: They were basically looking for quantifiable factors...so think of some quantifiable factors like the number of Times they are available to you in a day and the number of service providers they engage with. etc.,
For the second question again use quantifiable factors which make sense.
Tips: They patiently listened to what I said . So, be calm and don't be in a haste.
Skill Tips: Be a bit quick while solving the Aptitude questions....Know about the company before you go in for the interview process....No need of any prior knowledge in R language ...They just tested my Willingness to learn new things.
Skills: Aptitude Skills, Communication Skills, Structured thought process, Out of the box thinking, Basic programming skills ( very basic)
College Name: IIT KANPUR
I applied via Referral and was interviewed before Feb 2021. There were 2 interview rounds.
(1 Question)
- Q1. Tell me about yourself.
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Refu Drive India Senior Engineer Mechanical Interview Process
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