Interview Question and Answer for Railway preparation
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Interview Question and Answer for Railway preparation
Q1:- Which are the categories of bridges in Railways on the basis of consideration of water way ?
Ans:- There are four categories of Railway bridges based on water way basis.
1. Important Bridges:- Important Bridge is one which has a very large size of waterway. i.e. the bridge having total area of water way of more than 1000 sq. metres or has a linear water way of 300 metres.
2. Major Bridges:- Major Bridge is one which has a total linear water way of 18 metres or which has a clear opening of 12 metres or more.
3. Minor Bridges:- Minor Bridges are those bridges having linear water way of less than 12 metres in case of single span bridge and less than 18 metres in case of multi span bridges.
4. Culverts:- A very small bridge which has span less than 6 metres is called culvert.
Q2:- What is distressed bridge. What are categories of distressed bridges and what is SR imposed on distressed bridges ?
Ans:- A distressed bridge is one which shows some physical deterioration of its physical condition ,indicating the need for rehabilitationthrough special repairs, strengthening or re building etc.
Categories:-
There are two categories of distressed bridges.
Category I- Those bridges requiring rehabilitation to be done immediately say with in a year,s time.
Category II- Those requiring to be kept under observation and to be taken up for rehabilitation on programme basis.
SR imposed:-
Category I- These bridges are recommended for SR upto 25 kmph.
Category II- These bridges are recommended for SR upto 50 kmph.
Q3:What is schedule of inspection of AEN and DEN for distressed bridge?
Ans:-Category I
AEN- Once in two months
DEN-Once in three months
Category II
AEN-Once in six months
DEN-Once in a year.
Q4:-Define the following.
Ans:-
1. Destressing:- This is the operation undertaken with or without rail tensor to secure stress-free conditions in the LWR/CWR at the desired/specified rail temp.
2. L W R:- LWR is a welded rail, the central part of which does not undergo any longitudinal movement due to temp. variations. A length greater than 250 metres on B.G. and 500 metres on M.G will normally function as LWR.
3. Destressing temp:- This is the average rail temp. during the period of fastening the rails to the sleepers after distressing LWR without use of rail tensor.
4. Breathing Length:- This is that length at each end of LWR/CWR which is subjected to expansion/contraction on account of temp. variations.
Q5:- What are duties of AEN (open line) in regard to track machine?
Ans:-
1. He shall arrange for suitable accommodation for machine staff wherever camping coaches are not provided.
2. He shall periodically inspect track machines working in his jurisdiction .
3. He shall arrange for transportation of consumables, spares etc from Depots to the site of work.
4. He shall ensure adequate lighting arrangements where night working by machines are involved.
5. He shall monitor output and quality of work done by the machines.
6. He shall coordinate with other departments like Traffic, OHE and S&T Deptt. In the field to facilitate the work.
Q6:- What are different types of small track machines used on rail and welding operations in Railways?
Ans:-A)Rail:-
1. Abrasive Rail Cutter
2. Rail Cutting machine
3. Rail drilling machine
4. Hydraulic rail tensor 70t capacity
5. Hydraulic Rail Bender
B) Welding operations:-
1. Portable DC welding Generator
2. Double action weld trimmer for AT welding
3. Rail profile weld grinder.