Showing 181–190 of 208 questions
Q.181
Medium
Technical Knowledge (NTPC)
What is the primary purpose of a railway crossing gate or boom barrier?
A
To regulate train speed
B
To prevent unauthorized entry to railway stations
C
To control road traffic and prevent road vehicles from crossing railway tracks when trains approach
D
To measure train weight
Correct Answer:
C. To control road traffic and prevent road vehicles from crossing railway tracks when trains approach
Explanation:
Grade crossing gates control road traffic at level crossings to ensure safety when trains pass through.
Q.182
Medium
Technical Knowledge (NTPC)
Which type of rail joint is most commonly used in modern Indian railways?
A
Fish-plate joint
B
Welded joint
C
Riveted joint
D
Bolted joint
Correct Answer:
B. Welded joint
Explanation:
Welded joints (including Continuous Welded Rail or CWR) are preferred in modern railways as they reduce vibration and wear.
Q.183
Medium
Technical Knowledge (NTPC)
A train scheduled to cover 360 km in 6 hours was delayed by 2 hours. What should be its new average speed to reach on time?
A
60 km/h
B
75 km/h
C
80 km/h
D
90 km/h
Correct Answer:
D. 90 km/h
Explanation:
Remaining time = 6 - 2 = 4 hours. New speed required = 360/4 = 90 km/h.
Q.184
Medium
Technical Knowledge (NTPC)
Which railway zone covers the maximum number of states in India?
A
Central Railway
B
Western Railway
C
South Eastern Railway
D
Northern Railway
Correct Answer:
D. Northern Railway
Explanation:
Northern Railway covers the maximum number of states and is one of the largest zones by geographical area.
Q.185
Medium
Technical Knowledge (NTPC)
The ratio of broad gauge to meter gauge tracks in India is 4:1. If broad gauge tracks are 80,000 km, what is the total track length?
A
95,000 km
B
100,000 km
C
105,000 km
D
110,000 km
Correct Answer:
B. 100,000 km
Explanation:
If BG:MG = 4:1 and BG = 80,000 km, then MG = 20,000 km. Total = 80,000 + 20,000 = 100,000 km.
Q.186
Medium
Technical Knowledge (NTPC)
What does CRIS stand for in Indian Railway operations?
A
Central Rail Information System
B
Centralized Railway Information Service
C
Central Railways Integrated System
D
Centralized Rail Infrastructure Service
Correct Answer:
A. Central Rail Information System
Explanation:
CRIS (Central Rail Information System) is the IT backbone of Indian Railways, managing reservation and ticketing systems.
Q.187
Medium
Technical Knowledge (NTPC)
What is the primary function of a fish plate in railway construction?
A
To connect two rail sections
B
To prevent rail buckling
C
To reduce vibration
D
To measure rail temperature
Correct Answer:
A. To connect two rail sections
Explanation:
A fish plate is a steel plate used to connect two rail sections by bolting them together at the joint.
Q.188
Medium
Technical Knowledge (NTPC)
What is the standard distance between sleepers (cross ties) in Indian broad gauge tracks?
A
0.5 meters
B
1 meter
C
1.5 meters
D
2 meters
Correct Answer:
B. 1 meter
Explanation:
In Indian broad gauge, sleepers are typically spaced 1 meter apart to provide proper support and load distribution.
Q.189
Medium
Technical Knowledge (NTPC)
What is the composition of steel rails used in Indian Railways?
A
Iron and Carbon only
B
Iron, Carbon, Manganese, and Silicon
C
Aluminum and Steel
D
Copper and Iron alloy
Correct Answer:
B. Iron, Carbon, Manganese, and Silicon
Explanation:
Modern rail steel contains Iron (primary), Carbon (0.6-0.8%), Manganese (0.7-1.0%), and Silicon to provide strength and durability.
Q.190
Medium
Technical Knowledge (NTPC)
Which device is used to detect broken rails in Indian Railways?
A
Radar detector
B
Ultrasonic testing device
C
Thermal camera
D
Speed gun
Correct Answer:
B. Ultrasonic testing device
Explanation:
Ultrasonic testing devices are used to detect cracks and breaks in rails without damaging them.
