China Railway Signal & Communication Corporation Interview Questions and Answers

Q1. Basic Question about TDS DEDUCTION IN DIVISION
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Q1. What happens when cable is laid
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When cable is laid, it is typically buried underground or installed overhead to provide electrical or communication connections.
• Cable is typically laid underground in trenches to protect it from damage and exposure to elements.

• Overhead cable installation involves attaching the cable to poles or structures above ground.

• Proper cable laying techniques are essential to ensure safety, reliability, and longevity of the infra
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Q2. What is the logic in railway line
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The logic in railway line involves the efficient movement of trains on tracks to ensure safety and timeliness.
• Railway lines are designed to allow trains to travel from one point to another efficiently.

• Tracks are laid out in a specific pattern to prevent collisions and ensure smooth operation.

• Signals and switches are used to control the movement of trains and prevent accidents.

• Schedules and timetables are created to opt...read more
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Q3. What is track circuit?
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A track circuit is an electrical circuit used to detect the presence of trains on a railway track.
• Track circuits are typically installed along railway tracks to monitor the presence of trains by detecting their axles or wheels.

• They work by sending electrical current through the track and measuring changes in the current flow when a train is present.

• Track circuits are essential for signaling systems to ensure safe opera...read more
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Q4. What is the colour aspect through which the train gets the signal,
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The colour aspect through which the train gets the signal is typically red, yellow, and green.
• Red signal indicates stop

• Yellow signal indicates caution

• Green signal indicates go

• These signals are used in railway traffic control systems
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Q5. Why is route aspect given in home signal?
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Route aspect is given in home signal to indicate the route set for the train to follow.
• Route aspect helps the train operator know which track the train is cleared to proceed on.

• It ensures safe and efficient movement of trains by guiding them along the correct path.

• Different route aspects may indicate different routes or movements available to the train.

• Route aspect is crucial for preventing collisions and ensuring smoo
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Q1. Introduce yourself
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Q2. Why do you want to join services
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Q3. Why do you want to leave ONGC and join Railways
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I am seeking new challenges and opportunities for growth in a different industry.
• Looking for new challenges and opportunities for personal growth

• Interested in exploring a different industry and gaining new experiences

• Seeking a change in work environment and culture

• Want to broaden my skill set and knowledge by working in a different sector
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Q4. Radiation equation
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Q5. Max Planck law and its implication
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Q1. Normal Distribution function
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Q2. Probability, expected values
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Dynamic programming 3-4 ques

Recursion, DP, Logic building

Q1. HR asked about my experience, how I work with current team, whether you worked on KMP already. HR also asked 2-3 technical questions like HashSet manipulation, Android activity lifecycle and hashcode in J...read more
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WENT BAD BY NOW FULLY GREAT

Q1. NEVER BLUFED IF IN "DOUBT" SAID CAN I MAKE A GUSS
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Q2. CALL BY REFERENCE IN C
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Call by reference in C allows a function to modify the actual value of a variable passed as an argument.
• In call by reference, the address of the actual argument is passed to the function.

• Changes made to the parameter inside the function affect the original value outside the function.

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }
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Q1. How do you deal with managing your task?
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I prioritize tasks based on urgency and importance, delegate when necessary, and regularly communicate with team members to ensure tasks are completed efficiently.
• Prioritize tasks based on urgency and importance

• Delegate tasks when necessary

• Regularly communicate with team members to ensure tasks are completed efficiently
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Q1. What is the critical situation of fgd
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The critical situation of FGD refers to the failure of Flue Gas Desulfurization systems, leading to increased emissions of sulfur dioxide.
• Failure of FGD systems can result in non-compliance with environmental regulations

• Increased emissions of sulfur dioxide can lead to air pollution and health risks

• Critical situation may require immediate maintenance or shutdown of the system to prevent further damage

• Examples: Equipmen...read more
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