Knowledge Booster: NAIR Edition (30 Apr 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. 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]
Q2. Which of the following is not a reportable accident under Section 113 of the Railway Act?
- A) Loss of human life
- B) Collision involving passenger train
- C) Trespassing at Level Crossing Gate
- D) Derailment of passenger train
Correct Answer: Trespassing at Level Crossing Gate
Explanation: Section 113 reportable accidents involve life or serious damage; general trespassing is not in this specific category[cite: 2203, 2217].
Q3. Operating Ratio indicates"
- A) Performance of Operating Department
- B) Financial Performance of the Railway
- C) Goods Train Performance
- D) Passenger Train Performance
Correct Answer: Financial Performance of the Railway
Explanation: The Operating Ratio is the primary indicator of the railway's overall financial health. [cite: 1226, 1238]
Q4. What is the maximum additional free time that may be permitted for covering open wagons with tarpaulins during loading of loose/bulk commodity such as coal etc at EOL sidings?
- A) 30 minutes
- B) 1 hour
- C) 2 hours
- D) No additional free time
Correct Answer: 1 hour
Explanation: Engine-on-Load (EOL) sidings allow up to one hour of extra free time specifically for the manual process of tarpaulin covering[cite: 1402, 1415].
Q5. Which letters are not included when classifying train accidents from A to R?
- A) I & O
- B) E & I
- C) E & O
- D) I & J
Correct Answer: I & O
Explanation: Letters 'I' and 'O' are excluded from accident classification to avoid confusion with the numbers '1' and '0'.
Q6. Which statement is correct?
- A) Freight train ordering can't be cancelled
- B) Freight train can't be re-ordered
- C) Freight Train ordering can be rescheduled / put back
- D) All of the given options
Correct Answer: Freight Train ordering can be rescheduled / put back
Explanation: In operational practice, freight train orders are dynamic and can be 'put back' or rescheduled based on path availability and loco arrival[cite: 3123, 3129, 3145].
Q7. The Running staff should not normally be kept away from Head Quarters for more than how many hours?
- A) 48 hours
- B) 60 hours
- C) 72 hours
- D) 108 hours
Correct Answer: 72 hours
Explanation: To ensure staff welfare and rest, running crew should generally return to their home base within 72 hours.
Q8. Maximum Permissible Sanctioned Speed of B Class ODC in BG.
- A) 75 Kmph
- B) Sectional speed
- C) 60 Kmph
- D) 40 Kmph
Correct Answer: 40 Kmph
Explanation: The safety limit for B-Class ODC on Broad Gauge tracks is restricted to a maximum of 40 Kmph. [cite: 19, 31]
Q9. The operating ratio of Indian Railway in 2022-23 is?
- A) 98.10%
- B) 95%
- C) 97.70%
- D) 100%
Correct Answer: 98.10%
Explanation: The official operating ratio, representing efficiency (expenses vs earnings), was 98.1% for the 2022-23 period[cite: 2476, 2491].
Q10. Rail Yatra Vratant Puraskar Yojna is for whom?
- A) Deleted
- B) Deleted
- C) Deleted
- D) Deleted
Correct Answer: Deleted
Explanation: The final question regarding the travelogue award was omitted or not fully detailed in the snippet.
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