Showing 51–60 of 100 questions
in Technical Knowledge (NTPC)
Q.51
Hard
Technical Knowledge (NTPC)
What does SCADA stand for in railway operations?
A
Supervisory Control and Data Acquisition
B
Signal Control and Dispatch Automation
C
Station Command and Drive Alerting
D
Speed Control and Distance Anticipation
Correct Answer:
A. Supervisory Control and Data Acquisition
Explanation:
SCADA (Supervisory Control and Data Acquisition) is a system for monitoring and controlling railway infrastructure remotely.
Q.52
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.53
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.54
Hard
Technical Knowledge (NTPC)
What is the purpose of a vacuum brake system in trains?
A
To increase train speed
B
To create air pressure for cooling
C
To apply brakes using vacuum pressure differential
D
To prevent wheel skidding
Correct Answer:
C. To apply brakes using vacuum pressure differential
Explanation:
A vacuum brake system applies brakes by creating a pressure difference between the brake cylinder and atmosphere.
Q.55
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.56
Easy
Technical Knowledge (NTPC)
What is the standard gauge width used in Indian Railways?
A
1676 mm
B
1000 mm
C
762 mm
D
1435 mm
Correct Answer:
A. 1676 mm
Explanation:
Indian Railways primarily use 1676 mm (5 feet 6 inches) broad gauge, which is unique to India and a few other countries.
Q.57
Easy
Technical Knowledge (NTPC)
What is the maximum speed limit for passenger trains on Indian broad gauge tracks?
A
100 km/h
B
130 km/h
C
160 km/h
D
200 km/h
Correct Answer:
B. 130 km/h
Explanation:
The maximum speed limit for conventional broad gauge passenger trains in India is 130 km/h, though some specialized trains may exceed this.
Q.58
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.59
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.60
Easy
Technical Knowledge (NTPC)
Which of the following best describes the purpose of a ballast in railway tracks?
A
To add weight to trains
B
To provide support and distribute load of the track
C
To lubricate the rails
D
To measure train speed
Correct Answer:
B. To provide support and distribute load of the track
Explanation:
Ballast (usually stones or gravel) provides a stable bed for sleepers, distributes the load of the track, and improves drainage.
