Railway RRB / NTPC — MCQ Practice Questions & Answers

Question 1

What is the maximum speed limit for passenger trains on Indian Railways?

Accepted Answer

Correct answer: D. 160 km/h — # Maximum Speed Limit for Passenger Trains on Indian Railways This is a factual question about Indian Railways infrastructure and regulations. The answer depends on modern railway standards and track specifications. **Step 1: Understanding Indian Railway Speed Categories** Indian Railways classifies train speeds based on track infrastructure and train type. Passenger trains operate on dedicated routes with varying speed capabilities depending on rail gauge and track conditions. **Step 2: Modern High-Speed Passenger Train Standards** With technological upgrades and improved track infrastructure, Indian Railways has modernized several routes. Advanced signaling systems and dedicated tracks now support higher speed limits for passenger trains. **Step 3: Current Maximum Speed Limit** The maximum operational speed limit for passenger trains on Indian Railways is 160\,	ext{km/h} , which applies to premium services like Rajdhani Express and Shatabdi Express on dedicated high-speed corridors. **Step 4: Option Evaluation** - (A) 90\,	ext{km/h} — Local/regional

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A. 90 km/h

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B. 110 km/h

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C. 130 km/h

Question 2

In 2024, how many railway zones are there in Indian Railways?

Accepted Answer

Correct answer: B. 18 zones — As of 2024, there are 18 railway zones in Indian Railways after recent reorganization.

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A. 16 zones

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C. 20 zones

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D. 22 zones

Question 3

What is the primary function of a railway buffer?

Accepted Answer

Correct answer: B. To absorb shocks and vibrations between coaches — Railway buffers (couplers) absorb and dissipate shock energy, protecting coaches from damage during coupling/decoupling.

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A. To increase train speed

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C. To regulate electrical current

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D. To supply water to engines

Question 4

Which type of braking system is primarily used in Indian Railways?

Accepted Answer

Correct answer: B. Air braking system (Westinghouse) — # Indian Railways Braking System The primary braking system used in Indian Railways is the **Air Braking System (Westinghouse type)**, which uses compressed air to apply and release brakes across multiple coaches simultaneously. ## Step 1: Understanding Braking System Types Indian Railways operates over 68,000 km of track with thousands of coaches. The braking system must be: - **Reliable** across long trains - **Quick-acting** for emergency situations - **Fail-safe** (brakes apply automatically if pressure drops) ## Step 2: Why Air Braking System (Westinghouse)? The Westinghouse air braking system is preferred because: - Uses **compressed air** supplied from the locomotive's compressor - Operates through a **triple-valve mechanism** on each coach - Provides **fail-safe operation**: if air supply breaks, brakes automatically engage - Allows **independent control** of locomotive and train brakes ## Step 3: Comparison with Other Systems | System | Advantages | Disadvantages | |--------|-----------|---------------| | **Air (Westingh

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A. Vacuum braking system

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C. Hydraulic braking system

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D. Electromagnetic braking system

Question 5

What is the purpose of a railway siding?

Accepted Answer

Correct answer: B. To allow trains to wait or be stored temporarily — Sidings are branch tracks where trains can be parked, waiting, or loaded/unloaded without blocking main lines.

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A. To increase main track capacity

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C. To reduce track maintenance costs

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D. To increase train speed

Question 6

Which railway station in India is the largest by platforms?

Accepted Answer

Correct answer: A. Howrah Station, Kolkata — Howrah Station in Kolkata has the maximum number of platforms (23 platforms) among Indian railway stations.

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B. Chhatrapati Shivaji Terminus, Mumbai

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C. Grand Central Terminal, Delhi

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D. Lucknow Central

Question 7

What does OHE stand for in railway terminology?

Accepted Answer

Correct answer: A. Overhead Equipment — # OHE in Railway Terminology OHE is a fundamental acronym used in railway electrification systems to describe the infrastructure that supplies power to electric trains. **Step 1: Understand the Context** In railway systems, particularly those using electric traction, infrastructure components are essential for delivering electrical power to moving trains. The abbreviation OHE refers to the complete system of cables, supports, and equipment mounted above the track. **Step 2: Analyze Each Option** - **(A) Overhead Equipment** — Comprehensive term covering all electrical apparatus mounted above the rail line (correct) - **(B) Overhead Electrical** — While related to electrical systems, this phrasing is less precise and not standard railway terminology - **(C) Overhead Expressway** — Incorrect; railways use "expressway" in different contexts, not for power infrastructure - **(D) Overhead Extension** — Incorrect; "extension" does not describe the functional purpose of this system **Step 3: Standard Railway Definition** OHE (Overhead Equipment) inclu

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B. Overhead Electrical

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C. Overhead Expressway

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D. Overhead Extension

Question 8

What percentage increase in speed is achieved if a train increases from 80 km/h to 100 km/h?

Accepted Answer

Correct answer: C. 25% — Percentage increase = (100-80)/80 × 100 = 20/80 × 100 = 25%

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A. 20%

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B. 22.5%

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D. 27.5%

Railway RRB / NTPC - MCQ Practice Questions