Showing 161–170 of 208 questions
Q.161
Medium
Technical Knowledge (NTPC)
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.
Q.162
Medium
Technical Knowledge (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.
Q.163
Medium
Technical Knowledge (NTPC)
Which railway station in India is the largest by platforms?
A
Howrah Station, Kolkata
B
Chhatrapati Shivaji Terminus, Mumbai
C
Grand Central Terminal, Delhi
D
Lucknow Central
Correct Answer:
A. Howrah Station, Kolkata
Explanation:
Howrah Station in Kolkata has the maximum number of platforms (23 platforms) among Indian railway stations.
Q.164
Medium
Technical Knowledge (NTPC)
What does OHE stand for in railway terminology?
A
Overhead Equipment
B
Overhead Electrical
C
Overhead Expressway
D
Overhead Extension
Correct Answer:
B. Overhead Electrical
Explanation:
OHE (Overhead Electrical) refers to the electrical lines and equipment used to supply power to electric trains.
Q.165
Medium
Technical Knowledge (NTPC)
What percentage increase in speed is achieved if a train increases from 80 km/h to 100 km/h?
A
20%
B
22.5%
C
25%
D
27.5%
Explanation:
Percentage increase = (100-80)/80 × 100 = 20/80 × 100 = 25%
Q.166
Medium
Technical Knowledge (NTPC)
In railway signaling, what does the acronym IRSS stand for?
A
Indian Railway Safety System
B
Integrated Railway Signal System
C
Indian Railway Signaling Standards
D
Integrated Rail Signal Service
Correct Answer:
B. Integrated Railway Signal System
Explanation:
IRSS refers to Integrated Railway Signal System used in modern Indian Railways for safe train operations.
Q.167
Medium
Technical Knowledge (NTPC)
Which of the following is NOT a type of railway crossing?
A
Level crossing
B
Grade separation
C
Diagonal crossing
D
Overhead crossing
Correct Answer:
D. Overhead crossing
Explanation:
Railway crossings include level crossings, grade separations, and diagonal crossings. Overhead crossing is not a standard railway crossing type.
Q.168
Medium
Technical Knowledge (NTPC)
What is the maximum speed limit for narrow gauge trains in India?
A
60 km/h
B
80 km/h
C
100 km/h
D
120 km/h
Correct Answer:
B. 80 km/h
Explanation:
The maximum speed limit for narrow gauge trains in India is typically 80 km/h due to track specifications.
Q.169
Medium
Technical Knowledge (NTPC)
What is the purpose of a turntable in railway yards?
A
To measure train speed
B
To rotate locomotives and wagons for repositioning
C
To load and unload cargo
D
To refuel trains
Correct Answer:
B. To rotate locomotives and wagons for repositioning
Explanation:
A turntable is a rotating platform used in railway yards to turn locomotives and wagons for repositioning without reversing.
Q.170
Medium
Technical Knowledge (NTPC)
What does PWAY stand for in railway terminology?
A
Permanent Way
B
Platform Way
C
Passenger Way
D
Public Way
Correct Answer:
A. Permanent Way
Explanation:
PWAY stands for Permanent Way, which refers to the railway track structure including rails, sleepers, and ballast.
