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I applied via Referral and was interviewed in Jun 2024. There were 3 interview rounds.
QUANT AND REASONING AND BASIC MATHS SOME PUZZLES ALSO
The candidate is asked to draw the plan, elevation, and side view of a given object.
Start by drawing the plan view, which shows the object from above
Next, draw the elevation view, which shows the object from the front or side
Finally, draw the side view, which shows the object from the side
Use proper scale and dimensions to accurately represent the object
I applied via Campus Placement and was interviewed in Jul 2023. There was 1 interview round.
Collam trays are used in mechanical engineering for various purposes.
Collam trays are used for organizing and storing small mechanical components.
They are often made of durable materials such as plastic or metal.
Collam trays can have different compartments or slots to separate and hold different items.
They are commonly used in workshops, manufacturing facilities, and laboratories.
Examples of collam trays include tool o
There are various types of blends used in mechanical engineering, such as material blends, fuel blends, and blend shapes.
Material blends combine different materials to achieve desired properties
Fuel blends mix different fuels to optimize combustion
Blend shapes combine multiple shapes or components for specific applications
There are several types of heat exchangers used in mechanical engineering.
Shell and tube heat exchangers
Plate heat exchangers
Finned tube heat exchangers
Double pipe heat exchangers
Regenerative heat exchangers
Adiabatic wheel heat exchangers
Various types of gaskets are used in industries for sealing purposes.
Rubber gaskets are commonly used for sealing pipes and fittings.
Metal gaskets, such as spiral wound gaskets, are used in high-pressure and high-temperature applications.
Non-asbestos gaskets are used as a replacement for asbestos gaskets due to health concerns.
Cork gaskets are used for sealing fuel systems and electrical enclosures.
PTFE gaskets are use...
Heat exchange is important in various industries for efficient operation and energy conservation.
Heat exchange is crucial in industries such as power generation, chemical processing, HVAC, and automotive.
Efficient heat exchange helps in maintaining optimal operating temperatures and improving energy efficiency.
In power generation, heat exchange is essential for converting thermal energy into mechanical energy.
Chemical ...
I applied via Approached by Company and was interviewed before Apr 2023. There was 1 interview round.
Automation plc control
... Gentry.. ethanol unloading.
I applied via Apna Jobs and was interviewed in Jan 2023. There were 2 interview rounds.
Bharat Petroleum Mumbai Refinery interview questions for popular designations
I applied via Approached by Company and was interviewed in Dec 2022. There were 2 interview rounds.
SAP Softwere is an enterprise resource planning software that helps businesses manage their operations and resources.
SAP stands for Systems, Applications, and Products in Data Processing
It integrates various business functions such as finance, sales, and production
It provides real-time data and analytics to help businesses make informed decisions
Examples of SAP software include SAP ERP, SAP CRM, and SAP SCM
I applied via Naukri.com and was interviewed in May 2022. There were 2 interview rounds.
I applied via Referral and was interviewed in Feb 2021. There was 1 interview round.
A Megger is an electrical test instrument used to measure insulation resistance.
It is used to test the insulation resistance of electrical wires and cables.
It works by applying a high voltage to the insulation and measuring the resulting current.
It is commonly used in the maintenance and troubleshooting of electrical systems.
Megger readings can indicate the presence of insulation damage or degradation.
Meggers come in v...
Breakers are devices used to protect electrical circuits from damage caused by overload or short circuit.
Circuit Breakers
Fuse
Ground Fault Circuit Interrupter (GFCI)
Arc Fault Circuit Interrupter (AFCI)
Miniature Circuit Breaker (MCB)
Molded Case Circuit Breaker (MCCB)
Air Circuit Breaker (ACB)
Oil Circuit Breaker (OCB)
I applied via AmbitionBox and was interviewed before Dec 2021. There were 2 interview rounds.
Classes of fire are categorized based on the type of fuel involved.
Class A fires involve ordinary combustibles such as wood, paper, or cloth.
Class B fires involve flammable liquids or gases such as gasoline, propane, or oil.
Class C fires involve electrical equipment such as appliances, wiring, or circuit breakers.
Class D fires involve combustible metals such as magnesium, titanium, or sodium.
Class K fires involve cooki...
There are different types of fire extinguishers for different types of fires.
Class A extinguishers are for fires involving ordinary combustibles like wood, paper, or cloth.
Class B extinguishers are for fires involving flammable liquids like gasoline or oil.
Class C extinguishers are for fires involving electrical equipment.
Class D extinguishers are for fires involving flammable metals like magnesium or titanium.
Class K ...
Different types of hoses used in fire and safety
Attack hose: used to deliver water or foam to the fire
Supply hose: used to connect to a fire hydrant or pumper truck to supply water to the attack hose
Booster hose: used for small fires or to fill up smaller tanks
Suction hose: used to draw water from a static source like a lake or pool
Forestry hose: used for wildland fires and is lightweight and easy to maneuver
High-rise ...
Top trending discussions
I appeared for an interview before Apr 2021.
Round duration - 90 minutes
Round difficulty - Medium
This round had 3 coding questions of Medium to Hard level of difficulty.
Given an integer N
representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.
Generate all possible combinations of balanced parentheses for a given number of pairs.
Use recursion to generate all possible combinations of balanced parentheses.
Keep track of the number of open and close parentheses used in each combination.
Return the valid combinations as an array of strings.
You are given a long type array/list ARR
of size N
, representing an elevation map. The value ARR[i]
denotes the elevation of the ith
bar. Your task is to determine th...
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
Iterate through the array and calculate the maximum height on the left and right of each bar.
Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.
Sum up the trapped water at each bar to get the total trapped water for the entire array.
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
Find the minimum time required to rot all fresh oranges adjacent to rotten oranges.
Create a queue to store the coordinates of rotten oranges and perform BFS to rot adjacent fresh oranges.
Track the time taken to rot all fresh oranges and return -1 if not all fresh oranges can be rotten.
Update the grid with the new state of oranges after each second.
Handle edge cases such as empty grid or no fresh oranges present.
Example...
Round duration - 60 Minutes
Round difficulty - Medium
This was a standard DS/Algo round where I was given 2 questions to solve under 60 minutes. I was able to come up with the optimal approach for both the questions and then at the end of the interview I was also asked the famous Die Hard Water Puzzle.
Design a queue data structure following the FIFO (First In First Out) principle using only stack instances.
Your task is to complete predefined functions t...
Implement a queue using stacks following FIFO principle.
Use two stacks to simulate a queue.
For enQueue operation, push elements onto stack1.
For deQueue operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then pop from stack2.
For peek operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then return top of stack2.
For isEmpty operation, check if both stack1 and st...
You are provided with 'N' intervals, each containing two integers denoting the start time and end time of the interval.
Your task is to merge all overlapping intervals a...
Merge overlapping intervals and return sorted list of merged intervals by start time.
Sort the intervals based on start time.
Iterate through intervals and merge overlapping ones.
Return the merged intervals in sorted order.
Round duration - 60 Minutes
Round difficulty - Medium
This round had 2 coding questions - first one related to Binary Tree and the second one was a simple question from Bit Manipulation. This was followed by some questions from OOPS.
You are given a Binary Tree, and you need to determine the length of the diameter of the tree.
The diameter of a binary tree is the length of the longest path betwe...
The task is to find the diameter of a binary tree, which is the length of the longest path between any two end nodes in the tree.
Traverse the tree to find the longest path between two nodes.
Keep track of the maximum diameter found during traversal.
The diameter may not necessarily pass through the root node.
Consider both left and right subtrees while calculating the diameter.
Example: For input 1 2 3 4 -1 5 6 -1 7 -1 -1
Determine if it is possible to reorder the digits of a given integer 'N' such that the resulting number is a power of two. The leading digit must not be zero.
The fir...
The problem involves determining if it is possible to reorder the digits of a given integer to form a power of 2.
Iterate through all possible permutations of the digits of the given integer.
Check if any of the permutations form a power of 2.
Return 1 if a valid permutation is found, else return 0.
Advantages of OOP include code reusability, modularity, and easier maintenance.
Code reusability: Objects can be reused in different parts of the program, reducing redundancy.
Modularity: OOP allows for breaking down complex problems into smaller, more manageable parts.
Easier maintenance: Changes to one part of the codebase do not necessarily affect other parts, making maintenance easier.
Encapsulation: Data hiding and ab...
Access specifiers define the level of access to class members in Object-Oriented Programming.
Access specifiers include public, private, protected, and default
Public members are accessible from outside the class
Private members are only accessible within the class
Protected members are accessible within the class and its subclasses
Default access is when no access specifier is specified
Round duration - 30 Minutes
Round difficulty - Easy
This was my last round and I hoped it to go good just like the other rounds. The interviewer was very straight to point
and professional. The interview lasted for 30 minutes.
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.
Queue can be implemented using two stacks by maintaining the order of elements in the stacks.
Create two stacks, let's call them stack1 and stack2
When an element is enqueued, push it to stack1
When an element is dequeued, pop all elements from stack1 and push them to stack2
Pop the top element from stack2 and return it as the dequeued element
If stack2 is empty, repeat step 3
To get the front element of the queue, peek the
Left join returns all records from left table and matching records from right table. Full outer join returns all records from both tables.
Left join is used to combine two tables based on a common column.
In left join, all records from the left table are returned along with matching records from the right table.
If there is no match in the right table, NULL values are returned.
Example: SELECT * FROM table1 LEFT JOIN table...
Magic functions are special methods in PHP that start with __. Autoloading is a way to automatically load classes.
Magic functions are used to handle certain events in PHP, such as object creation or property access.
Autoloading allows PHP to automatically load classes when they are needed, without requiring manual includes.
Magic functions can be used in conjunction with autoloading to dynamically load classes or handle
Given three sorted arrays, find common elements.
Create three pointers to traverse each array
Compare the elements at the pointers and move the pointer of the smallest element
If all pointers point to the same element, add it to the result and move all pointers
Repeat until any pointer reaches the end of its array
Check if a number is a power of 2 or not.
A power of 2 has only one bit set in its binary representation.
Use bitwise AND operator to check if the number is a power of 2.
If n is a power of 2, then n & (n-1) will be 0.
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