Showing 21–30 of 100 questions
in Technical Knowledge (NTPC)
Q.21
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.22
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.23
Easy
Technical Knowledge (NTPC)
If a freight train covers 360 km in 12 hours, what is its average speed?
A
25 km/h
B
30 km/h
C
35 km/h
D
40 km/h
Correct Answer:
B. 30 km/h
Explanation:
Average speed = Total distance / Total time = 360 km / 12 hours = 30 km/h
Q.24
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.25
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.
Q.26
Easy
Technical Knowledge (NTPC)
If a train increases its speed from 60 km/h to 90 km/h, what is the percentage increase?
Explanation:
Percentage increase = [(90-60)/60] × 100 = (30/60) × 100 = 50%
Q.27
Medium
Technical Knowledge (NTPC)
What is the primary function of anti-collision devices (ACD) in trains?
A
To reduce noise pollution
B
To prevent train collisions automatically
C
To increase passenger comfort
D
To reduce fuel consumption
Correct Answer:
B. To prevent train collisions automatically
Explanation:
Anti-collision devices are safety systems designed to prevent train-to-train collisions by automatically applying brakes when necessary.
Q.28
Hard
Technical Knowledge (NTPC)
Which railway zone is the largest in terms of route kilometers?
A
Central Railway
B
Northern Railway
C
Indian Railways (entire network)
D
Southern Railway
Correct Answer:
B. Northern Railway
Explanation:
The Northern Railway zone has the largest route length among all railway zones in India.
Q.29
Medium
Technical Knowledge (NTPC)
A train travels at 75 km/h for 4 hours and then at 60 km/h for 2 hours. What is the average speed?
A
65 km/h
B
67.5 km/h
C
70 km/h
D
72.5 km/h
Correct Answer:
C. 70 km/h
Explanation:
Total distance = (75×4) + (60×2) = 300 + 120 = 420 km. Total time = 6 hours. Average speed = 420/6 = 70 km/h
Q.30
Medium
Technical Knowledge (NTPC)
What is the standard height of railway platforms in India?
A
600 mm
B
750 mm
C
900 mm
D
1000 mm
Correct Answer:
B. 750 mm
Explanation:
The standard height of railway platforms in India is 750 mm (2 feet 6 inches) from rail level.
