Bridges & Tunnels — Set 4
Indian Railways · पुल और सुरंगें · Questions 31–40 of 50
Which state has the highest number of railway bridges in India?
Correct Answer: B. Maharashtra
Maharashtra has the largest number of railway bridges owing to its vast network and difficult terrains like the Western Ghats. The state's rail infrastructure includes some of the country's most complex engineering works. Bridges are essential for navigating its diverse river systems and mountains.
What is the main advantage of a 'Ballastless Track' used inside long railway tunnels?
Correct Answer: B. Reduced maintenance and higher stability
Ballastless tracks, or slab tracks, are used in tunnels to provide better stability and reduce the need for regular maintenance in confined spaces. This technology is widely used in the Pir Panjal and other new Himalayan tunnels. It helps in maintaining track geometry for a longer duration.
Which bridge is the oldest functional railway bridge in India?
Correct Answer: A. Old Yamuna Bridge
The Old Yamuna Bridge in Delhi, also known as 'Lohe ka Pul', was opened in 1866. It is a double-decker bridge that still carries rail and road traffic today. It stands as a testament to the durability of 19th-century iron bridge engineering.
The 'Escape Tunnel' is a safety feature primarily used in which transportation project?
Correct Answer: C. USBRL Project
The USBRL project in Jammu and Kashmir features parallel escape tunnels alongside the main railway tunnels. These are used for rescue operations and emergency evacuation of passengers. This safety standard is followed for tunnels exceeding a certain length in hilly regions.
Which river is crossed by the most number of railway bridges in India?
Correct Answer: A. Ganges
The Ganges, being India's longest river flowing through the heartland, has the highest number of railway crossings. These bridges link North India with the Eastern and Central parts of the country. Many of these are iconic rail-cum-road structures built over different eras.
The first railway bridge in India was built over which creek in Mumbai?
Correct Answer: B. Dapoorie Creek
The first railway bridge was constructed over the Dapoorie viaduct during the inaugural run between Bombay and Thane in 1853. It was a simple stone and timber structure. This marked the very beginning of bridge engineering in the history of Indian rail.
Which is the longest railway tunnel on the Konkan Railway route?
Correct Answer: A. Karbude Tunnel
The Karbude Tunnel is the longest on the Konkan line, stretching for 6.5 kilometers. It was a major engineering hurdle located between Ukshi and Bhoke stations. The tunnel was bored through hard volcanic rock in the Sahyadri mountains.
The 'Godavari Arch Bridge' is primarily constructed using which material?
Correct Answer: B. Pre-stressed Concrete
The Godavari Arch Bridge is one of the longest pre-stressed concrete arch bridges in the world. Its design allows it to withstand high wind speeds and the heavy flow of the river during monsoons. The use of concrete ensures lower maintenance costs compared to steel bridges.
Which bridge is known as the 'Naini Bridge', a historic rail-cum-road structure in Prayagraj?
Correct Answer: B. Old Naini Bridge
The Old Naini Bridge was opened in 1865 to connect the rail line between Calcutta and Delhi. It is one of the oldest double-decker bridges in the country. The bridge is situated near the holy Sangam at Prayagraj.
The 'NATM' technique is widely used in India for constructing?
Correct Answer: B. Railway Tunnels
NATM stands for New Austrian Tunnelling Method and is a popular technique for tunnel construction in variable rock conditions. It involves using the surrounding rock mass as a support structure. This method has been extensively used in the Himalayan and Konkan railway projects.