Propel Industries Graduate Trainee Interview Questions and Answers

Technical Questions related to engineering field , basic aptitude questions, non-technical topic essay

Q1. Tell me about yourself
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Q2. Tell me about your final year project
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Q3. What electrical equipment's do you know about?
Ans. 
I am familiar with various electrical equipment such as transformers, circuit breakers, relays, and motors.
• Transformers

• Circuit breakers

• Relays

• Motors
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Q4. Explain transformer? What is on transformer nameplate? Where is star connection used? Where is delta connection used?
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformer nameplate includes information such as rated power, voltage, current, frequency, and efficiency.

• Star connection is used in power distribution systems to connect three-phase loads.

• Delta connection is used in industrial applications where high current loads are present.

• Transformers are ess...read more
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They asked about 60 questions in total with 30 aptitude and 30 technical questions

Q1. The hr and technical round occured at same time there are there people panel with one hr two technical interviewers with for mechanical and electrical questions.
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Q2. My first questions is explain about HVAC and vapour compression cycle and they asked about 10 units like unit of heat power etc and they finally asked about current scenerio questions finally interview end...read more
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Q3. The interview go on about 30 minutes and the asked me about to draw the pv and ts diagrama of hvac finally the interview is over and got selected for 5lpa. Good luck.
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Test is about 1 hr and it contains 40 mcqs(both aptitude and coding)

Q1. Level order traversal of binary tree
Ans. 
Level order traversal of binary tree visits nodes level by level, from left to right.
• Use a queue to keep track of nodes at each level

• Start by pushing the root node into the queue

• While the queue is not empty, dequeue a node, visit it, and enqueue its children
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Q2. Question related to OOPS concepts
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Q1. Change the odd bits in the binary form of a given number and convert the new binary into decimal form
Ans. 
To change the odd bits in a binary number, flip the bits at odd positions and convert the new binary number to decimal form.
• Start by converting the given number into binary form.

• Identify the odd bits in the binary number (counting from right to left, starting at 1).

• Flip the odd bits by changing 1s to 0s and 0s to 1s.

• Convert the new binary number into decimal form.

• For example, if the given number is 13 (binary 1101), th...read more
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Q2. Primary vs secondary memory
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Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.
• Primary memory is faster but has limited capacity, while secondary memory is slower but has larger capacity.

• Examples of primary memory include RAM and cache memory, while examples of secondary memory include hard drives and SSDs.

• Primary memory stores data that is currently being used by t...read more
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Q1. Find out the second largest integer in an array
Ans. 
Find the second largest integer in an array of strings
• Convert the strings in the array to integers

• Sort the integers in descending order

• Return the second element in the sorted array as the second largest integer
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Q2. Reverse a string
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Reverse a string by iterating through the characters and swapping them
• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet
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Aptitude test containing Quants, Logical Reasoning, Verbal Ability, and Mechanical Engg qns( Thermodynamics, Fluid Mechanics, Strength of Materials etc)

Q1. Questions on Manufacturing Processes( Especially Welding - Classification, TIG vs MIG, etc)
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Q2. Questions on Absorption Cooling technology ( Types of refrigeration, Compression v/s Absorption Cooling, etc)
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