Tata Elxsi Interview Questions, Process, and Tips

Q1. Swap two variables without temp
Ans. 
Use XOR operation to swap two variables without using a temporary variable
• Use XOR operation to swap two variables without using a temporary variable

• Example: a = 5, b = 10. a = a XOR b, b = a XOR b, a = a XOR b. Now a = 10, b = 5
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Q2. Multiply two matrices in CUDA
Ans. 
Matrix multiplication in CUDA involves parallelizing the computation across multiple threads on the GPU.
• Use CUDA kernels to launch parallel threads for matrix multiplication.

• Divide the matrices into blocks and load them into shared memory for faster access.

• Implement the matrix multiplication algorithm in CUDA C/C++.

• Ensure proper memory management and synchronization between threads.
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Q1. Merge two sorted arrays
Ans. 
Merge two sorted arrays into a single sorted array
• Create a new array to store the merged result

• Iterate through both arrays simultaneously and compare elements

• Add the smaller element to the new array and move to the next element in that array

• Continue until all elements from both arrays are merged
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Q1. What is transformers working principle of transformers
Ans. 
Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
• Transformers have two coils of wire, known as primary and secondary coils, which are magnetically coupled.

• When an alternating current flows through the primary coil, it creates a changing magnetic field which induces a voltage in the secondary coil.

• The ratio of the number of turns in the primary an...read more
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Q2. If 22 kv line fuse blows up u and another Operator present at site how u will replace the fuse and what safety measures will you take to replace fuse , what are the safety PPE (personal protection Equipme...read more
Ans. 
To replace a blown 22 kv line fuse, safety measures include de-energizing the line, using proper PPE, and following proper procedures.
• De-energize the line before attempting to replace the fuse

• Use insulated tools to avoid electrical shock

• Wear appropriate PPE such as rubber gloves, safety glasses, and flame-resistant clothing

• Follow proper lockout/tagout procedures to ensure the line remains de-energized during the replac...read more
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Q1. Project execution details
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Q2. Signal conditioning circuits
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Very easy and comfortable

Q1. Oops and java is the most asked topic
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Q2. Inheritance, family background, passion
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Q1. Tell me about yourself
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Q2. Why you want this job
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It had aptitude along with 3 coding question

Q1. They asked about array, pointers
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Q1. About yourself, fav show, how will you handle yourself in pressure situations
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30 questions combination of Logical, numeric, verbal and 2 coding questions.

Q1. Self Introduction
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Q2. Questions on core Java concepts
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Q1. Tell me about yourself
Ans. 
I am a passionate software engineer with experience in developing web applications and a strong background in computer science.
• Experienced in developing web applications using technologies such as HTML, CSS, JavaScript, and React

• Strong background in computer science with knowledge of data structures and algorithms

• Proficient in programming languages such as Java, Python, and C++

• Familiar with Agile development methodolog
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Q2. Your strength and weakness
Ans. 
Strength: Problem-solving skills. Weakness: Overthinking.
• Strength: I have strong problem-solving skills which help me in finding efficient solutions to complex issues.

• Weakness: Sometimes I tend to overthink situations, which can lead to unnecessary stress and delays in decision-making.
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Q1. OOPS concept questions asked
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Q2. Basic programming questions asked
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