Knowledge Booster: NAIR Edition (14 Aug 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. While calculating Wagon Turn Round which of the following is not required?
- A) Effective Wagon Holding
- B) Loaded Wagons
- C) Loaded received wagons
- D) Loaded wagons made over
Correct Answer: Loaded wagons made over
Explanation: WTR calculations rely on holding, loading, and receipts; 'wagons made over' is not a primary factor in the standard formula.
Q2. What is Adequate distance beyond first stop signal for granting line clear in case of two aspect lower quadrant signaling?
- A) 180m
- B) 580m
- C) 240m
- D) 400m
Correct Answer: 400m
Explanation: In two-aspect signaling, a 400m 'overlap' distance is required to grant permission for another train. [cite: 241, 254]
Q3. W/L board is provided on the approach of all level crossings at a distance of meters
- A) 600
- B) 800
- C) 400
- D) None of these
Correct Answer: 600
Explanation: Whistle boards are standardly installed 600 meters before a level crossing to give road users enough warning of a train[cite: 4166, 4169, 4192].
Q4. When the control is interrupted and no communication with the controller is possible who will be responsible for working and regulating of train?
- A) Station Master
- B) Chief Controller
- C) AOM/DOM (Control)
- D) Sr.DOM
Correct Answer: Station Master
Explanation: In the absence of centralized control communication, the local Station Master assumes full responsibility for train regulation[cite: 1490, 1503].
Q5. Every consignment of explosives tendered for despatch shall be accompanied by a pass (in duplicate) issued by the consignor in as required under the Explosive
- A) Rules
- B) 1983."
- C) Form-10
- D) Form 15
Correct Answer: Form-16
Explanation: Form-22
Q6. Full form of NDMA is?
- A) National Disaster Management Action
- B) Notional Disaster Management Action
- C) National Disaster Management Authority
- D) National Disaster Mitigation Authority
Correct Answer: National Disaster Management Authority
Explanation: NDMA is the apex body in India responsible for formulating policies and guidelines for disaster management.
Q7. Collision Train Accidents will be termed as consequential train Accidents in categories."
- A) A1 to A2
- B) A1 to A3
- C) A1 to A4
- D) None of these
Correct Answer: A1 to A4
Explanation: Consequential accidents involving collisions are categorized under groups A1 to A4. [cite: 305, 320]
Q8. At a class 'A' station to grant line clear the line must be clear up to?
- A) Outermost facing point
- B) Starter
- C) Home Signal
- D) None of these
Correct Answer: Starter
Explanation: At A-class stations, permission to approach (Line Clear) requires the line to be unoccupied up to the Starter signal.
Q9. How many times a year are Regional Official Language Implementation meetings held?
- A) 5
- B) 3
- C) 2
- D) 4
Correct Answer: 4
Explanation: These committees meet once every quarter (four times a year) to review the progress of Hindi usage.
Q10. 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.
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