Knowledge Booster: NAIR Edition (01 Jun 2026)
Welcome to today's NAIR Knowledge Booster! We've handpicked 10 essential questions from our database to help you sharpen your skills. Dive in and test your knowledge!
Q1. What is the full form of PAM?
- A) Punctuality Analysis & Monitoring
- B) Punctuality Analysis Management
- C) Periodical Analysis & Monitoring
- D) Punctuality Analysis & Maintenance
Correct Answer: Punctuality Analysis & Monitoring
Explanation: PAM is the ICMS module used to track and analyze the arrival and departure times of passenger trains.
Q2. Which is a fully integrated Electronic Control System designed to minimize collisions and increase safety on Railway Systems?
- A) SATSANG
- B) ACD
- C) ICMS
- D) TMS
Correct Answer: ACD
Explanation: The Anti-Collision Device (ACD) is the specific technology designed to prevent train-on-train collisions electronically[cite: 1827, 1839].
Q3. Preferential Traffic Order (Schedule) pertains to?
- A) Freight traffic
- B) Passenger Traffic
- C) Parcel Traffic
- D) All the given options
Correct Answer: Freight traffic
Explanation: The Preferential Traffic Order (PTO) is issued to determine the priority of different types of goods or freight traffic.
Q4. What equipment is NOT a part of trolley
- A) lorry
- B) or motor trolley as prescribed by the Railway Administration?
- C) Copy of the Working Time Table with correction slips and appendices.
- D) Copy of the SWR with correction slips and appendices.
Correct Answer: Two hand signal lamps
Explanation: Two red and two green hand signal flags
Q5. Management of maintenance blocks is one of the core functionalities of"
- A) COA
- B) NTES
- C) COIS
- D) RMS
Correct Answer: COA
Explanation: The Control Office Application (COA) is the primary tool used by controllers to plan and manage engineering maintenance blocks[cite: 1841, 1855].
Q6. Shunt signal is a?
- A) Stop signal
- B) Permissive signal
- C) Subsidiary signal
- D) None of the given options
Correct Answer: Subsidiary signal
Explanation: Shunt signals are subsidiary signals used specifically for low-speed shunting movements within station yards.
Q7. Block Section Limit Board is placed at a distance not less than how many meters in advance of Home signal?
- A) 120
- B) 400
- C) 180
- D) 300
Correct Answer: 180
Explanation: The BSLB provides a safety boundary 180 meters ahead of the Home signal to define the block section on double lines.
Q8. Which Tennis player has been on the top of the ATP rankings for maximum period?
- A) Novak Djokovic
- B) Rafael Nadal
- C) Roger Federer
- D) None of these
Correct Answer: Novak Djokovic
Explanation: Novak Djokovic holds the record for the most total weeks spent at the number one spot in the professional ATP tennis rankings[cite: 4663, 4664, 4680].
Q9. What does TVU stands for?
- A) Train Vehicle Unit
- B) Ticket Vending Unit
- C) Train Vending Unit
- D) None of these
Correct Answer: Train Vehicle Unit
Explanation: Train Vehicle Unit (TVU) is the product of the number of trains and road vehicles at a level crossing[cite: 2157, 2171].
Q10. EOTT means?
- A) Enhancement of Train Transformation
- B) Enhancement of Operations Traffic
- C) Enhancement of Operations Transformation
- D) End of Train Telemetry System
Correct Answer: End of Train Telemetry System
Explanation: EOTT is a wireless system that allows the loco pilot to monitor air pressure at the rear of the train without a brake van.
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