Technical Knowledge (NTPC)
Q.61
Medium
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.62
Easy
If a train travels 450 km in 6 hours, what is its average speed?
A
65 km/h
B
70 km/h
C
75 km/h
D
80 km/h
Correct Answer:
C. 75 km/h
Explanation:
Average speed = Total distance / Total time = 450 km / 6 hours = 75 km/h
Q.63
Medium
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.64
Medium
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.
Q.65
Easy
What is the role of a guard in a freight train?
A
To collect tickets
B
To monitor wagon conditions and train movement
C
To drive the locomotive
D
To maintain passenger comfort
Correct Answer:
B. To monitor wagon conditions and train movement
Explanation:
A freight train guard (or brake van attendant) monitors wagon conditions, coupling, load security, and assists in train operations.
Q.66
Easy
What does the term 'gradient' mean in railway engineering?
A
The color of the track
B
The slope or inclination of the track
C
The age of the rail
D
The width of the track
Correct Answer:
B. The slope or inclination of the track
Explanation:
Gradient refers to the slope or angle of incline/decline of the railway track, expressed as a percentage or ratio.
Q.67
Medium
If a train covers 540 km and takes 9 hours for the journey, and another train covers the same distance in 6 hours, what is the difference in their speeds?
A
30 km/h
B
45 km/h
C
60 km/h
D
90 km/h
Correct Answer:
A. 30 km/h
Explanation:
Speed of first train = 540/9 = 60 km/h; Speed of second train = 540/6 = 90 km/h; Difference = 90 - 60 = 30 km/h
Q.68
Medium
What is the primary purpose of a pantograph in electric trains?
A
To provide lighting
B
To collect electricity from overhead wires
C
To control train speed
D
To apply brakes
Correct Answer:
B. To collect electricity from overhead wires
Explanation:
A pantograph is an apparatus that maintains contact with overhead electrical lines to collect power for electric trains.
Q.69
Medium
What is the standard height of platforms at railway stations in India?
A
0.5 meters
B
0.75 meters
C
1 meter
D
1.25 meters
Correct Answer:
B. 0.75 meters
Explanation:
Standard platform height in Indian Railways is 0.75 meters (2.5 feet) for broad gauge to ensure safe passenger boarding.
Q.70
Easy
Which of the following is a characteristic of an express train compared to a local train?
A
Lower ticket price
B
Fewer stops and higher speed
C
More stops and lower speed
D
More passenger comfort only
Correct Answer:
B. Fewer stops and higher speed
Explanation:
Express trains have fewer intermediate stops, allowing them to maintain higher average speeds compared to local trains.
