Railway RRB / NTPC — MCQ Practice Questions & Answers

Question 1

What is the standard rail section weight used in Indian Railways (in kg/m)?

Accepted Answer

Correct answer: B. 52 kg/m — 52 kg/m is the standard rail section weight commonly used on Indian Railway routes.

Answer

A. 45 kg/m

Answer

C. 60 kg/m

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D. 75 kg/m

Question 2

Which organization is responsible for railway safety in India?

Accepted Answer

Correct answer: B. Office of Chief Safety Officer, Ministry of Railways — The Office of Chief Safety Officer under the Ministry of Railways oversees railway safety in India.

Answer

A. NITI Aayog

Answer

C. DGCA

Answer

D. National Highway Authority of India

Question 3

What is the normal track curvature radius for broad gauge on Indian Railways?

Accepted Answer

Correct answer: B. 800 meters minimum — The minimum track curvature radius for broad gauge is approximately 800 meters on Indian Railways.

Answer

A. 500 meters minimum

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C. 1000 meters minimum

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D. 1200 meters minimum

Question 4

Which of the following is NOT a function of railway sleepers?

Accepted Answer

Correct answer: C. To control train speed — Sleepers (ties) support rails, maintain gauge, and distribute loads; train speed control is managed by braking systems and track design, not sleepers.

Answer

A. To transfer loads from rails to ballast

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B. To maintain gauge distance between rails

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D. To provide lateral stability to rails

Question 5

Which railway zone is the largest in terms of route kilometers?

Accepted Answer

Correct answer: B. Northern Railway — # Railway Zone Route Length Comparison Indian Railways is divided into 18 zones, each with different route kilometers. We need to compare the major zones to identify which has the largest network. **Step 1: Understand what "route kilometers" means** Route kilometers (RKM) represent the total length of railway tracks within a zone's jurisdiction, measured in kilometers. This is the standard metric used to compare railway zone sizes. **Step 2: Identify major Indian Railway zones and their approximate route lengths** The largest railway zones in India by route kilometers are: \begin{align} 	ext{Northern Railway} &\approx 16,400	ext{ km} \ 	ext{Central Railway} &\approx 13,000	ext{ km} \ 	ext{Southern Railway} &\approx 13,000	ext{ km} \ 	ext{Eastern Railway} &\approx 10,000	ext{ km} \end{align} **Step 3: Compare the route lengths** Among individual railway zones, the Northern Railway has the maximum route kilometers at approximately 16,400	ext{ km} , which exceeds all other zones. **Step 4: Eliminate incorrect options** - **(A) Central Ra

Answer

A. Central Railway

Answer

C. Indian Railways (entire network)

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D. Southern Railway

Question 6

What is the minimum turning radius for broad gauge railway tracks?

Accepted Answer

Correct answer: D. 175 meters — The minimum turning radius for railway tracks depends on the gauge width and safe operating speed. For broad gauge (1676 mm) Indian railways, standard design specifications determine this value. Step 1: Understand Broad Gauge Specifications Broad gauge in India has a track width of 1676\,	ext{mm} (or 5\,	ext{ft}\,6\,	ext{in} ). The turning radius is calculated based on safe curvature limits to prevent derailment and ensure passenger comfort. Step 2: Apply Railway Design Formula The minimum turning radius for curves on broad gauge tracks follows the standard formula: R_{	ext{min}} = \frac{v^2}{g \cdot e + f} where v is speed, g is gravity, e is banking, and f is friction coefficient. For broad gauge at standard operating speeds, this yields a practical minimum. Step 3: Standard Railway Practice Indian Railways specifications for broad gauge tracks establish that the absolute minimum turning radius for safe operation is determined by track geometry and safety margins: R_{	ext{min}} = 175\,	ext{meters} This value accounts for: - Track stability at c

Answer

A. 200 meters

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B. 300 meters

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C. 400 meters

Question 7

Which safety device automatically applies brakes if a train exceeds safe speed on curves?

Accepted Answer

Correct answer: C. Automatic Train Protection (ATP) — Automatic Train Protection (ATP) is a safety system that automatically applies brakes if a train exceeds safe speed limits on curves or approaches.

Answer

A. Speed Governor

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B. Overspeed Protection System (OPS)

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D. Vigilance Device

Question 8

What does ACSM stand for in railway signaling?

Accepted Answer

Correct answer: D. Axle Counting and Safety Monitoring — ACSM (Axle Counting and Safety Monitoring) is a modern railway safety system for train detection.

Answer

A. Automatic Coupling and Safety Module

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B. Axle Counter and Signal Management

Answer

C. Automatic Colour Signal Module

Railway RRB / NTPC - MCQ Practice Questions