Showing 171–180 of 207 questions
Q.171
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.172
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.
Q.173
Medium
Technical Knowledge (NTPC)
What does EMU stand for in railway terminology?
A
Electric Multiple Unit
B
Electrical Maintenance Unit
C
Engine Management Unit
D
Emergency Mobile Unit
Correct Answer:
A. Electric Multiple Unit
Explanation:
EMU stands for Electric Multiple Unit, which refers to electric trains that have distributed motor units in multiple cars.
Q.174
Medium
Technical Knowledge (NTPC)
What is the purpose of a railway buffer or bumper?
A
To increase train speed
B
To absorb impact and prevent damage during coupling
C
To measure train weight
D
To control temperature
Correct Answer:
B. To absorb impact and prevent damage during coupling
Explanation:
Railway buffers are elastic devices that absorb impact and shock during coupling and uncoupling of coaches.
Q.175
Medium
Technical Knowledge (NTPC)
Which of the following is NOT a type of railway station classification in India?
A
Category A
B
Category F
C
Category H
D
Category E
Correct Answer:
C. Category H
Explanation:
Railway stations in India are classified from Category A to F. Category H does not exist in the classification system.
Q.176
Medium
Technical Knowledge (NTPC)
What is the standard distance between two railway sleepers on a broad gauge track?
A
0.4 m
B
0.6 m
C
0.8 m
D
1.0 m
Explanation:
The standard spacing between sleepers on broad gauge is 0.8 meters (or approximately 30-32 inches).
Q.177
Medium
Technical Knowledge (NTPC)
What is the primary function of a railway turntable?
A
To increase train speed
B
To rotate locomotives and change their direction
C
To cool down locomotive engines
D
To separate passenger and freight trains
Correct Answer:
B. To rotate locomotives and change their direction
Explanation:
A turntable is used to rotate locomotives 180 degrees to change their direction without requiring them to travel backward.
Q.178
Medium
Technical Knowledge (NTPC)
Which railway zone headquarters is located in Kolkata?
A
Eastern Railway
B
South Eastern Railway
C
North Eastern Railway
D
Northeast Frontier Railway
Correct Answer:
A. Eastern Railway
Explanation:
Eastern Railway has its headquarters in Kolkata (formerly Calcutta), one of the oldest railway zones in India.
Q.179
Medium
Technical Knowledge (NTPC)
What is the standard thickness of a rail in the Indian broad gauge system?
A
85 mm
B
90 mm
C
100 mm
D
110 mm
Correct Answer:
C. 100 mm
Explanation:
The standard rail thickness for broad gauge in India is 100 mm (measured at the head of the rail).
Q.180
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.
