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  #1  
4th August 2014, 08:13 AM
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Last year question papers of Railway Recruitment Board of Junior Signal Engineer

Will you please share with me the last year question papers of Railway Recruitment Board of Junior Signal Engineer?
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  #2  
4th August 2014, 11:57 AM
Super Moderator
 
Join Date: Apr 2013
Re: Last year question papers of Railway Recruitment Board of Junior Signal Engineer

As you want to get the last year question papers of Railway Recruitment Board of Junior Signal Engineer so here it is for you:

Some content of the file has been given here:

Q1: With the help of a sketch, define station limits for “B” class stations
equipped with
Two Aspect signalling on single line and double line sections.
Q2: What are the classifications of stations in Indian Railways?
Q3: What do you mean by “Read Back Technique” in Railway signalling?
Please cite few
examples of this technique being used in your Railway.
Q4: What is the difference between “A” Marker and “A” Board in Railway
signalling?
Q6: What do you mean by the “S” Marker and where it is being used in
Railway
signalling?
Q5: What is the normal aspect of a signal in Automatic signalling territory?
Q6: What do you mean by Slip siding and Catch siding? Write down cases
when Slip
siding and Catch siding are required to be provided in the Railway system.
Q7: In Indian Railways, what are the systems of train working adopted?
Please also
mention the name of the most widely used system on Indian Railways.
Q8: Please prepare the locking table for Lever numbers 1, 3, 4, 6 & 7 of the
following
diagram: -
Q9: What are the essential requirements of the Absolute Block System?
Q10: What are the standards of interlocking prescribed in Railway Signalling?
Q11: What are the different classes of LC gates? Please explain.
Q12: What do you mean by the term “Route Holding” in Railway signalling?
Please
explain the various means to achieve the same.
Q13: What do you mean by “Loose” and “Tight” locking in Railway signalling?
Please
explain with examples.
Q14: What do you mean by Ballast Resistance? What are the minimum
permissible
values for the ballast resistance in the station yard and in the Block section?
2
Q15: What do you mean by the staggering of adjacent track circuit rail
polarities and why
is this required?
Q16: List the names of various types of traction bonds used in RE area using
DC track
circuits.
Q17: Write down the adjustment of DC track circuit for failsafe and reliable

working.
Q18: What do you mean by Fouling Protection of Track? Please explain.
Q19: What is Dead Section in track circuit area and how can it be eliminated?
Q20: What do you mean by cut section track circuit and/or fed over track
circuits?
Q21: Can an AFTC be used in a track section with steel sleepers? Why?
Q22: What do you mean by “End Fed” and “Centre Fed” types of AFTCs
along-with
corresponding maximum permissible lengths of track circuits?
Q23: What are the various types of Bonds being used in AFTCs?
Q24: Please list the names of the constituent parts of a Electrical Lever Lock
and its
functioning.
Q25:: What do you mean by Indication Locking and Track Locking and on
which levers
these are being used?
Q26: Explain the working of Snubbing Circuit in Point machine operation
using 3-wire
control.
Q27: What is the concept of Cross protection in signalling circuits? Please
explain.
Q28: Explain the working of 4-wire point detection circuit using circuit
diagram.
Q29: What do you mean by super imposed detection of points? As per the
latest
directives of Railway Board, is it suggested to use this arrangement?
Q30: Write down the general features of IRS Rotary Type point machines with
143 mm
stroke.
Q31: Explain the working of Point operation circuit using Siemens Point
Contactor unit in
an electromechanical installation.
Q32: What do you mean by RHS and LHS turnouts? Can we use the same
type of Point
machine (IRS Rotary type) for both the turnouts? Please explain.
Q33: Compare different types of conventional signal lamps.
Q34:: What are the different types of ECRs being used with conventional
signal lamps?
Q35: What are Triple Pole lamps? Describe their merits over Double pole
lamps.
Q36: What do you mean by H-Type, I-Type and L-Type signal transformers
along-with
their uses?
3
Q37: What is Aspect Control and Aspect Control circuits? Draw an aspect
control circuit

for an inner distant signal in Double Distant signalling territory.
Q38: What is cascading of signal aspects? Explain with suitable circuit
diagram.
Q39: What do you mean by Red Lamp Protection? Expalin with suitable
diagrams.
Q40: What do you mean by Cutting in Arrangement in signalling circuits and
reason for
its use?
Q41: What do you mean by “Direct Feeding”, “Local Feeding” and “Remote
Feeding” of
signals? Explain.
Q42: Describe the advantages of LED signal Lamps over conventional signal
lamps.
Q43: What are the various PVC signal cables used in Railway signalling in
SECR? Are
they screened one or not?
Q44: What do you mean by cable meggering? Please explain.
Q45: What is Electric Signal Reverser? List different types of Electric Signal
Reversers
being used over Indian Railways.
Q46: What do you mean by EKT? Describe the working of EKT.
Q47: What do you mean by TS, TSS, FP, SP & SSP? Please explain.
Q48: What are the effects of RE in signalling?
Q49: List the names of various types of Block Instruments being used in
stations on
Single/Double line and RE/Non-RE area. What special feature is incorporated
in the
block instruments meant for use in RE area?
Q50: What do you mean by maximum length of parallelism in Railway
Signalling over
RE area? Explain.
Q51: Why the repeater relays of track Relays are made Slow To Pick-up and
with what
time delay and why? Explain.
Q52: What are the reasons behind using various traction bonds in Track
Circuits over
RE area?
Q53: What arrangements/changes are required to be carried out in the DC
track circuits
being used in RE area w.r.t. Non-RE area?
Q54: What are the effects of RE in signalling circuits and how are they
minimised?
Q55: List the various types of Route indicators used in Railway Signalling and
which
type is being commonly used in Indian Railways?
Q56: What are the items which are being used to increase the length of a DC

track
circuit in RE area? What are the maximum permissible length of track circuits
in Single
and Double line section on RE area?
Q57: What are the maximum permissible distances for direct feeding of
signals on
Single and Double line section in RE area?

Q58: What are the various means of suppressing the value of induced
voltages at the
source of 25 kV traction? Explain.
Q59: Draw a sketch showing the arrangement of power supply, neutral
section feeding
post, sectioning & sub sectioning posts.
Q60: Draw and explain the State Transition diagram for the working of Axle
Counter.
Q61: What are the different constituent parts of an axle counter?
Q62: What is Trolley Suppression Track circuit? Why is it necessary in Axle
counter?
Q63: What are approach locking, back locking and dead approach locking in
electrical
signalling? Explain with suitable examples using sketches.
Q64: What do you mean by Sectional route release in electrical signalling?
Explain with
suitable example using sketches.
Q65: What is Crank Handle Interlocking in Railway signalling? Explain with
suitable
example using sketch.
Q66: What is LC Gate Interlocking in Railway signalling? Explain with suitable
examples
using sketches.
Q67: What is the working principle of 24V battery charger used in Railway
signalling?
Explain with sketch.
Q68: What do you mean by Filters in electrical rectifier circuits? What is the
difference
between the chargers being used in signalling and telecommunication
applications?
Q69: What is IPS? Describe in detail. How many battery banks are used in IPS
in
Railway signalling?
Q70: What is electrical transformer? Explain its working in detail.
Q71: Mention the major advantages of the SMPS over Thyristor controlled
Power
supplies.
Q72: What is an Inverter and where is this being used in Railway Signalling?

Q73: Calculate the total load in a typical 4 line way side station with one
siding line and a
common loop in a Double line section. Draw necessary sketches.
Q74: In a PI installation, which circuit ensures the “One Signal-One Train”
feature?
Please mentioned the name of this circuit and explain with suitable example.
Q75: Explain the signal control circuit for a home signal with one route with
suitable
sketch and circuits.
Q76: List the name of activities pertaining to signal department which require
prior
sanction of CRS for their execution in the yards.
Q77: What is the validity period of CRS sanction? Explain the process for
obtaining
CRS’s sanction.

Q78: What do you mean by ground connections?
Q79: What is the role of Drawing Office in S&T department?
Q80 What are the equipments to be provided with a Trolley/Lorry/Motor
Trolley?
Q81 What is IB signal? Why this signal is provided? Is it being provided on
single line
section? Explain the working of an IB signal.
Q82 What is the procedure to pass an IBS signal at its ON aspect by the
driver of any
train?
Q83: What is half notch? Why is this provided and in which
equipment/instrument?
Q84 Draw the Block Clearance circuit for SGE Double line instrument using
appropriate
circuits.
Q85 What are the principles of Lock and Block working? How these are
achieved in
SGE Double Line Block Instrument?
Q86 In Siemens signal group relays, the GLSR relay is made slow to release.
Why?
Please explain.
Q87 What are the items to be checked during scrutiny of Engineering Scale
Plan?
Q88 What items will you check during inspection of a motor operated point?
Q89 What items will you check during inspection of SSDAC?
Q90 What item are being noted during day/night footplate?
Q91 What items are being noted during joint point and crossing inspection
with SE/SSE (P-Way)?
Q92 Draw the ALSR CKT for signal number S- ?
Q93 How will you councell your staff to prevent short cut method?

Q94 Why Disconnection Memo should be issued before attending to
maintenance of
certain signal gears & for which activities/works, it should it be issued?
Q95 (a) What is the propose of using the choke in single rail DC track circuits
in RE
area?
Q95 (b) What is half notch? Why is this provided and in which
equipment/instrument?
Q96 Draw the complete diagram of Single Rail DC track circuit in RE area
including
value of cack component?
Q97 What parameters are being checked during inspection of Analog Axle
Counter and
what are their standard values?
Q98 (a) What are the conditions for granting line clear in double line B class
station on
MACLS territory?
Q98 (b) What are the conditions for granting line clear in single line B class
station on
Two Aspect CLS territory?
99. Draw the dog chart of following: - 2 X 3 W 5 R

100. For the given yard draw the RCC for the following signals: -
– Down Home Signal (S-1), Shunt Signal (Sh- 26), Starter Signal (S-4) and
Calling
On signal (Co-2).

For more detailed information I am uploading a PDF file which is free to download:


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