Knowledge Booster: NAIR Edition (05 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. Which is not true regarding the master circular on Gati Shakti Cargo Terminal?
- A) Applicable for all new goods terminals
- B) Applicable for existing private sidings
- C) Terminal can only be developed in private land
- D) It supersedes earlier policies
Correct Answer: The terminal can only be developed in private land
Explanation: GCTs can be developed on private land, railway land, or a combination; they are not limited to private land[cite: 2340, 2358].
Q2. The permission for movement of 'C' Class ODC is given by?
- A) DRM
- B) CRS
- C) DOM
- D) DSO
Correct Answer: CRS
Explanation: C-class Over Dimensional Consignments are highly restricted and require approval from the Commissioner of Railway Safety.
Q3. Formula of Loco outage is?
- A) Total engine hours from shed/24
- B) Engine hours for traffic use/12
- C) Total engine hours from shed/12
- D) Engine hours for traffic use/24
Correct Answer: Engine hours for traffic use/24
Explanation: Loco outage is calculated by taking the total hours locomotives were available for traffic and dividing by 24 hours[cite: 3668, 3676, 3688].
Q4. 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].
Q5. If a passenger carrying train does not arrive within minutes after allowing for its normal running time the Station Master in advance shall advise the station in rear.
- A) 5
- B) 10
- C) 15
- D) None of these
Correct Answer: 10
Explanation: A passenger train is flagged as overdue if it is 10 minutes late relative to its normal sectional running time[cite: 3524, 3528, 3545].
Q6. What does RTIS stands for?
- A) Right Time Train Information System
- B) Real Time Train Information System
- C) Real Time Terminal Information System
- D) None of the given options
Correct Answer: Real Time Train Information System
Explanation: RTIS uses satellite tracking to provide accurate, live updates on train location and speed to control offices.
Q7. When should a Warner signal be provided at a class 'B' station (both single and double line)?
- A) If trains run through at a speed exceeding 50 kilometers per hour without stopping.
- B) If trains run through at a speed exceeding 40 kilometers per hour without stopping.
- C) If trains run through at a speed exceeding 45 kilometers per hour without stopping.
- D) Warner signals are not required at class 'B' stations.
Correct Answer: If trains run through at a speed exceeding 50 kilometers per hour without stopping.
Explanation: It is required for safety when non-stopping trains exceed the 50 Kmph threshold. [cite: 519, 538]
Q8. Train Collision Avoidance System (TCAS) is meant to provide protection to trains against
- A) Signal Passing at Danger
- B) Over speeding
- C) Collisions
- D) All of the given options
Correct Answer: All of the given options
Explanation: TCAS (Kavach) is a comprehensive safety system that prevents SPAD, controls speed, and automatically applies brakes to prevent collisions[cite: 4029, 4035, 4052].
Q9. Stations at which the Loco Pilot must obtain an authority to proceed to enter the block section are called?
- A) Junction Stations
- B) Block Stations
- C) Non-Block Stations
- D) Special Class Stations
Correct Answer: Block Stations
Explanation: Block stations are the physical boundaries where pilots must receive official permission to enter the next segment[cite: 2060, 2076].
Q10. Expand RFID?
- A) Rail frequency identity device
- B) Radio forwarding identification device
- C) Rail forwarding intact device
- D) Radio Frequency Identification
Correct Answer: Radio Frequency Identification
Explanation: RFID is the industry-standard technology for tracking wagons and locos using radio waves and electronic tags[cite: 4011, 4015, 4027].
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