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Railway RRB / NTPC
Technical Knowledge (NTPC)

NTPC, Group D, JE — all sections

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Difficulty: All Easy Medium Hard 91–100 of 100
Topics in Railway RRB / NTPC
What is the purpose of a railway siding?
A To increase main track capacity
B To allow trains to wait or be stored temporarily
C To reduce track maintenance costs
D To increase train speed
Correct Answer:  B. To allow trains to wait or be stored temporarily
EXPLANATION

Sidings are branch tracks where trains can be parked, waiting, or loaded/unloaded without blocking main lines.

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Which railway service connects major cities with premium amenities and higher fares?
A Local trains
B Express trains
C Rajdhani Express
D Freight trains
Correct Answer:  C. Rajdhani Express
EXPLANATION

Rajdhani Express is a premium intercity service connecting major cities with high-speed and premium amenities.

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What is the standard rail section weight used in Indian Railways (in kg/m)?
A 45 kg/m
B 52 kg/m
C 60 kg/m
D 75 kg/m
Correct Answer:  B. 52 kg/m
EXPLANATION

52 kg/m is the standard rail section weight commonly used on Indian Railway routes.

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Which type of braking system is primarily used in Indian Railways?
A Vacuum braking system
B Air braking system (Westinghouse)
C Hydraulic braking system
D Electromagnetic braking system
Correct Answer:  B. Air braking system (Westinghouse)
EXPLANATION

Indian Railways predominantly use the Westinghouse air braking system for freight and passenger trains.

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What is the primary function of a railway buffer?
A To increase train speed
B To absorb shocks and vibrations between coaches
C To regulate electrical current
D To supply water to engines
Correct Answer:  B. To absorb shocks and vibrations between coaches
EXPLANATION

Railway buffers (couplers) absorb and dissipate shock energy, protecting coaches from damage during coupling/decoupling.

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Which component of a train is responsible for converting fuel into mechanical energy?
A Boiler
B Engine/Motor
C Coupling
D Brake system
Correct Answer:  B. Engine/Motor
EXPLANATION

The engine or motor in diesel/electric locomotives converts fuel or electrical energy into mechanical energy for movement.

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What does NTPC stand for in railway context?
A National Train Passenger Committee
B Non-Technical Promotion Course
C National Test for Professional Competency
D None of the above
Correct Answer:  D. None of the above
EXPLANATION

NTPC is actually the recruitment exam for Non-Technical Popular Categories by RRB, not an acronym for a specific term.

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In 2024, how many railway zones are there in Indian Railways?
A 16 zones
B 18 zones
C 20 zones
D 22 zones
Correct Answer:  B. 18 zones
EXPLANATION

As of 2024, there are 18 railway zones in Indian Railways after recent reorganization.

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What is the maximum speed limit for passenger trains on Indian Railways?
A 90 km/h
B 110 km/h
C 130 km/h
D 160 km/h
Correct Answer:  D. 160 km/h
EXPLANATION

Modern passenger trains on Indian Railways can operate at speeds up to 160 km/h on dedicated corridors.

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Which gauge is most commonly used in Indian Railways?
A Broad Gauge (1676 mm)
B Meter Gauge (1000 mm)
C Narrow Gauge (762 mm)
D Standard Gauge (1435 mm)
Correct Answer:  A. Broad Gauge (1676 mm)
EXPLANATION

Broad Gauge of 1676 mm is the predominant gauge in Indian Railways, used for major routes.

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