Railway RRB / NTPC — MCQ Practice Questions & Answers

Question 1

Which gauge is most commonly used in Indian Railways?

Accepted Answer

Correct answer: A. Broad Gauge (1676 mm) — Broad Gauge of 1676 mm is the predominant gauge in Indian Railways, used for major routes.

Answer

B. Meter Gauge (1000 mm)

Answer

C. Narrow Gauge (762 mm)

Answer

D. Standard Gauge (1435 mm)

Question 2

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

Answer

A. 90 km/h

Answer

B. 110 km/h

Answer

C. 130 km/h

Question 3

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.

Answer

A. 16 zones

Answer

C. 20 zones

Answer

D. 22 zones

Question 4

What does NTPC stand for in railway context?

Accepted Answer

Correct answer: D. None of the above — NTPC is actually the recruitment exam for Non-Technical Popular Categories by RRB, not an acronym for a specific term.

Answer

A. National Train Passenger Committee

Answer

B. Non-Technical Promotion Course

Answer

C. National Test for Professional Competency

Question 5

Which component of a train is responsible for converting fuel into mechanical energy?

Accepted Answer

Correct answer: B. Engine/Motor — The engine or motor in diesel/electric locomotives converts fuel or electrical energy into mechanical energy for movement.

Answer

A. Boiler

Answer

C. Coupling

Answer

D. Brake system

Question 6

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.

Answer

A. To increase train speed

Answer

C. To regulate electrical current

Answer

D. To supply water to engines

Question 7

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

Answer

A. Vacuum braking system

Answer

C. Hydraulic braking system

Answer

D. Electromagnetic braking system

Question 8

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

Answer

D. 75 kg/m

Railway RRB / NTPC - MCQ Practice Questions