Otis Elevator Network Engineer Interview Questions and Answers

2 coding questions (1 DP + 1 Graph)

Q1. Leetcode easy, medium questions on tree, dp
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Q1. 1 coding question on string (hard).
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Q2. OS, DBMS, OOPs questions
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Q1. Usual HR questions + 2 puzzles question
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Q1. Overview of technical background
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Q1. Whate are different bus bar schemes?
Ans. 
Bus bar schemes are different ways of connecting bus bars in power systems.
• Single bus bar scheme

• Double bus bar scheme

• Main and transfer bus bar scheme

• Ring bus bar scheme

• Breaker and a half scheme

• Mesh bus bar scheme
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Q2. What are the equipment sequence for any line bay?
Ans. 
The equipment sequence for any line bay starts with the circuit breaker and ends with the transformer.
• The circuit breaker is the first equipment in the sequence.

• Next comes the isolator switch.

• After that, the earth switch is operated.

• Then the line disconnector is opened.

• Finally, the transformer is disconnected from the line.

• The sequence is reversed when the line bay is put back into service.
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Q1. What you want to leave your current organization?
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Q2. Are you comfortable to relocate to another city?
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Q1. About your self. About casting yard. About Methodology of casting of different structures. About site progress planning and time cycle of progress. This process is for 30-40 minutes.
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Q1. Details of my Education and experience. Salary negotiation and finalization of joining.
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Q1. Past experience and salary exp.
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Q1. Kpi and past exp disc.
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