Railway Interview Questions with Answers:-
1. When did ICF manufacture first indigenous rail compartment?
2 October 1955.
2. When did first telephone service (STD/ISD) in Mumbai–New Delhi Rajdhani begin?
11 October 1996
3. Who was the first female Asstt? Station Master in Indian Railway?
Ms. Rinku Sinha (appointed in 1994 in Eastern Railway Kolkata)
4. Who is first Diesel engine Driver in Indian Railway?
Mumtaz Kathawala (Appointed in 1992 as Assistant Diesel Driver)
5. When was first A.C. train between Bombay and Baroda started?
In 1936
6. Name the first railway tunnel of Indian railway?
Parsik tunnel
7. Which company undertook the manufacturing of wagon for the first time in 1920?
Jesaf and Company, Kolkata
8. Before independence, Asif Ali was the rail minister who was the first rail minister after independence?
Dr. John Mathai
9. Which is naming the trains that have placed in Guinness Book of World Record?
Darjeeling Toy Train, Nilgiri Mountain Train Simla Toy Train, Mather on Toy Train, Place on wheels Royal Orient, Buddha circular Express, Fairy Queen.
10. Where is Asia’s biggest Container Depot located?
In Delhi (Tughlaquabad Inland Container Depot)
11. Name the only train in India with numeral name as 10001/10002?
Satpura Express
12. Which is the longest train in India is?
Prayagraj Express (26 Coaches, New Delhi–Allahabad)
13. Which is the slowest train in India?
Nilgiri Express
14. Which is the highest Railway station in India?
Similiguda (996.08 mt from sea level in the Valtair division of Southern–Eastern Railway)
15. Which is the highest river bridge manufactured under Konkan Railway?
Panval River Rail bridge (64 mt. high)
16. Which Railway Division has the maximum number of tunnels?
Kalka Simla division of Northern Railway (103 tunnels)
17. Which is the longest railway bridge of Indian railway?
Railway bridge in Kerala near Kochchi which joins Idapalli to Vallerpadma (Length 4.62 km)
18. Which is the last railway station of Northern Railway and Indian Railway?
Bajalta
19. Which Indian state has maximum rail routes?
An Uttar Pradesh
20. How many states does Himsagar Express pass through?
11 States
(Jammu and Kashmir, Punjab, Haryana, Delhi, Uttar Pradesh, Rajasthan, Madhya Pradesh, Andhra Pradesh, Tamilnadu, Karnataka, and Kerala)
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21. Which is the only railway station that has all the three rails in operation?
Dumdum Railway station (EMU rail service circular Railway and Metro Railway)
22. Which railway station has the smallest name from the English alphabets point of view?
IB (Between Howrah–Nagpur)
23. Which railway station has the longest name?
Venkatanarsimharajuvaripeta (Tamilnadu)
24. The numeral name of all the super fast Express trains starts with which number?
1 (One)
25. Two Heritage hotels of Indian railway are located in?
Puri and Ranchi
26. What are the steps involved in the concreting process, explain?
The major steps involved in the process of concreting are as follows:
- Batching
- Mixing
- Transporting and placing of concrete
- Compacting.
- Batching: The process of measurement of the different materials for the making of concrete is known as batching. batching is usually done in two ways: volume batching and weight batching. In the case of volume batching the measurement is done in the form of volume whereas in the case of weight batching it is done by the weight.
- Mixing: In order to create good concrete the mixing of the materials should be first done in dry condition and after its wet condition. The two general methods of mixing are hand mixing and machine mixing.
- Transportation and placing of concrete: Once the concrete mixture is created it must be transported to its final location. The concrete is placed on form works and should always be dropped on its final location as closely as possible.
- Compaction of concrete: When concrete is placed it can have air bubbles entrapped in it which can lead to the reduction of the strength by 30%. In order to reduce the air bubbles the process of compaction is performed. Compaction is generally performed in two ways: by hand or by the use of vibrators.
27. Why are steel plates inserted inside bearings in elastomeric bearings?
In order to make an elastomeric bearing act/ function as a soft spring, it should be made to allow it to bulge laterally and also the stiffness compression can be increased by simply increasing the limiting amount of the lateral bulging. In many cases in order to increase the compression stiffness of the bearing the usage of metal plates is made. Once steel plates are included in the bearings the freedom of the bulge is restricted dramatically, also the deflection of the bearing is reduced as compared to a bearing without the presence of steel plates. The tensile stresses of the bearings are induced into the steel plates. But the presence of the metal plates does not affect the shear stiffness of the bearings.
28. What do you understand by preset during the installation process of bridge bearings?
During the installation of bridge bearings, the size of the upper plates is reduced to save the material costs. This process is known as preset. Generally, the upper bearing plate comprises of the following components:
- Length of bearing
- 2 x irreversible movement.
- 2 x reversible movement.
The bearing initially is placed right in the middle point of the upper bearing plate. No directional effects of irreversible movement are considered. But since the irreversible movement usually takes place in one direction only the displaced direction is placed away from the midpoint. In such cases, the length of the upper plate is equal to the length of the bearing + irreversible movement + 2 x reversible movement.
29. Describe briefly the various methods of concrete curing.
Curing is the process of maintaining the moisture and temperature conditions for freshly deployed concrete. This is done for a small duration of time to allow the hardening of concrete. The methods that are involved in saving the shrinkage of the concrete includes:
- Spraying of water: on walls, and columns can be cured by sprinkling water.
- A wet covering of surface: can be cured by using the surface with wet gunny bags or straw
- Ponding: the horizontal surfaces including the slab and floors can be cured by stagnating the water.
- Steam curing: of pre-fabricated concrete units steam can be cured by passing it over the units that are under closed chambers. It allows faster curing process and results in faster recovery.
- Application of curing compounds: compounds having calcium chloride can be applied on curing surface. This keeps the surface wet for a very long time.
30. In the design of bridge arguments what considerations should be made to select the orientation of the wing walls?
Some of the most common arrangements of wing walls in cases of bridge arguments are as follows:
- Wing walls parallel to abutments: This method is considered to take the least amount of time to build and is simple as well. But on the downside, this method is not the most economical. The advantage of this type of design being that they cause the least amount of disturbance to the slope embankment.
- Wing walls at an angle to abutments: This design method is considered to be the most economical in terms of material cost.
- Wing walls perpendicular to abutments: The characteristic of this design is it provides an alignment continuous with the bridge decks lending support to the parapets.
31. In case if concrete box girder bridges how is the number of cells determined?
When the depth of a box girder bridge exceeds 1/6th or 1/5th of the bridge width then the design recommended is that of a single cell box girder bridge. But in case the depth of the bridge is lower than 1/6th of the bridge width than a twin-cell or in some cases, multiple cells are the preferred choice. One should also note that even in the cases of wider bridges where their depths are comparatively low the number of cells should be minimized. This is so as there is noticeably not much improvement in the transverse load distribution when the number of cells of the box girder is higher than three or more.
32. Under what circumstances should pot bearings be used instead of elastomeric bearings?
Pot bearings are preferred over elastomeric bearings in situations where there are chances of high vertical loads in combinations of the very large angle of rotations. Elastomeric bearings always require a large bearing surface so that a compression is maintained between the contact surfaces in between the piers and the bearings. This is not possible to maintained in high load and rotation environment. Also, the usage of elastomeric bearings leads to the uneven distribution of stress on the piers. This results in some highly induced stresses to be targeted at the piers henceforth damaging them. Due to the above reasons pot bearings are preferred over elastomeric bearings in such cases.
33. What do u mean by bulking of sand?
34. What is the density of steel?
35. How to calculate plastic section modulus(z) and second moment in beam delta? if impossible of example number calculate
36. What is mean by least count? Tell the least count of dumpy level and theodolite?