1. What is the purpose of super elevation in railway track design?
a) To increase train speed
b) To provide drainage
c) To reduce wear on outer rail
d) To improve passenger comfort
Answer: c) To reduce wear on outer rail
Explanation: Super elevation is the banking of the outer rail of a curve higher than the inner rail, which helps counteract the centrifugal force acting on the train during curve negotiation, reducing wear on the outer rail.
2. What is the main function of interlocking in railway signaling?
a) To prevent train collisions
b) To control train speed
c) To regulate platform announcements
d) To ensure timely departures
Answer: a) To prevent train collisions
Explanation: Interlocking is a vital safety mechanism that ensures conflicting routes are not set up simultaneously, thus preventing train collisions.
3. What is the purpose of cant deficiency in railway track design?
a) To increase passenger comfort
b) To improve track stability
c) To reduce lateral forces on trains
d) To prevent derailments
Answer: c) To reduce lateral forces on trains
Explanation: Cant deficiency is the difference between the actual cant provided in a curve and the required cant based on the train speed. It helps to minimize lateral forces acting on the train, thereby enhancing safety and passenger comfort.
4. Which type of curve allows for the highest train speeds?
a) Circular curve
b) Transition curve
c) Compound curve
d) Reverse curve
Answer: b) Transition curve
Explanation: Transition curves are designed to smoothly transition the curvature of the track from a straight line to a circular curve, allowing for higher train speeds without discomfort to passengers or excessive wear on equipment.
5. What is the primary function of a marshalling yard in railway operations?
a) To store passenger trains
b) To refuel locomotives
c) To sort and rearrange freight cars
d) To accommodate maintenance activities
Answer: c) To sort and rearrange freight cars
Explanation: Marshalling yards are facilities where freight trains are sorted, rearranged, and assembled according to their destinations or routes, facilitating efficient freight transportation.
6. Which signaling system uses color lights to convey information to train drivers?
a) Semaphore signaling
b) Position light signaling
c) Centralized traffic control
d) Automatic block signaling
Answer: b) Position light signaling
Explanation: Position light signaling employs color lights (typically red, green, and yellow) arranged in specific configurations to convey signals to train operators regarding track conditions and permissions.
7. What is the purpose of equilibration in railway track design?
a) To distribute loads evenly
b) To ensure uniform track gauge
c) To minimize vibrations
d) To reduce noise pollution
Answer: a) To distribute loads evenly
Explanation: Equilibration involves adjusting the substructure of the track to ensure that loads from trains are distributed evenly across the track bed, minimizing the risk of track deformation or failure.
8. Which type of turnout allows trains to change tracks without reducing speed significantly?
a) Diamond crossover
b) Single slip switch
c) Double slip switch
d) Stub switch
Answer: c) Double slip switch
Explanation: Double slip switches allow trains to change tracks in multiple directions simultaneously, minimizing the need for speed reduction during track changes.
9. In railway signaling, what does a green signal typically indicate?
a) Proceed
b) Stop
c) Prepare to stop
d) Approach with caution
Answer: a) Proceed
Explanation: A green signal generally indicates that the track ahead is clear, and the train has permission to proceed.
10. What is the purpose of a diamond crossover in railway track design?
a) To allow trains to cross from one track to another
b) To facilitate maintenance activities
c) To accommodate high-speed trains
d) To increase track capacity
Answer: a) To allow trains to cross from one track to another
Explanation: Diamond crossovers are track arrangements that allow trains to cross from one track to another, enabling them to switch between parallel tracks safely and efficiently.