Siemens Interview Questions, Process, and Tips

Q1. Basic situation handelling questions
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Q1. Products and solutions, case studies
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Q2. Digitalization, software solutions, value addition.
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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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Questions based on c++,DSA

Q1. Reverse a linked list
Ans. 
To reverse a linked list, iterate through the list and change the direction of pointers.
• Iterate through the linked list while keeping track of the previous, current, and next nodes.

• Update the pointers of each node to reverse the direction.

• Set the new head of the reversed list as the original list's tail.
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Q2. Return the largest and the second largest number
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To return the largest and second largest numbers from an array
• Sort the array in descending order

• Return the first element as the largest number and the second element as the second largest number
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Q1. Power System Harmonics,THD,TDD etc..
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Q2. Power Quality related definition,scope, mitigation etc
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Q3. IEC /IEEE standards on PQ issues
Ans. 
IEC/IEEE standards provide guidelines for addressing power quality issues in testing.
• IEC 61000 series provides standards for electromagnetic compatibility (EMC) testing

• IEEE 1159 standard focuses on monitoring and analyzing power quality

• IEC 61000-4-30 standardizes measurement methods for power quality parameters

• Compliance with these standards ensures reliable and accurate testing results
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Q4. Details of PQ Harmonics grid codes etc
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PQ harmonics refer to the quality of power in electrical grids, including voltage and current harmonics.
• PQ harmonics are regulated by grid codes to ensure the quality of power supplied to consumers.

• Grid codes specify limits on harmonic distortion levels to prevent negative impacts on equipment and systems.

• Examples of grid codes include IEEE 519 and EN 50160.

• Harmonics can cause issues such as overheating in transformers
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Q5. PQ Monitoring, Analysis, Compliance evaluation methods etc
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Q6. Any application software,Power quality, Energy metering monitoring software works.
Ans. 
Yes, application software for power quality and energy metering monitoring works effectively.
• Application software can effectively monitor power quality and energy metering data

• These software can provide real-time data analysis and reporting

• Examples include Power Monitoring Software, Energy Management Software, and Smart Metering Software
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Q7. PQ DEVICE ,Meters , Communication protocol,Modbus,IEC 61850 etc.
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Q8. Basic Power system knowledge on Active,reactive,Apparent power,Energy,PF correction, Harmonics filter etc
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Q1. Same toppic as above in round-1 but with little indepth by different panel
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Present organization at PQ issues encountered? How mitigated,which PQ devices or analyzer used,How it's reported in software etc

Q1. Only Self introduction
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Q2. Study & work related
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Q3. Basic family background etc
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Q1. Lot about Statistics
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Q2. Machine Learning hyperparameters
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