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Questions and Answers
The normal height of the contact wire for Broad Gauge is 6.00 meters at supports.
The normal height of the contact wire for Broad Gauge is 6.00 meters at supports.
False
The clearance for safety requires individuals to stay at least 2 meters away from live parts of the O.H.E.
The clearance for safety requires individuals to stay at least 2 meters away from live parts of the O.H.E.
True
Caution Boards should be placed at a height of 4 meters above rail level on signal posts.
Caution Boards should be placed at a height of 4 meters above rail level on signal posts.
False
The dotted outline in the diagrams is applicable for anchor spans.
The dotted outline in the diagrams is applicable for anchor spans.
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In tunnels, the contact wire may be lowered to 4.58 meters for Broad Gauge.
In tunnels, the contact wire may be lowered to 4.58 meters for Broad Gauge.
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It is advisable for personnel to avoid approaching within 1 meter of live conductors under normal conditions.
It is advisable for personnel to avoid approaching within 1 meter of live conductors under normal conditions.
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The diagrams consider the effects of wind on the displacement of wires.
The diagrams consider the effects of wind on the displacement of wires.
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Signal posts must always have protective iron screening if within 2 meters of a 25 KV live conductor.
Signal posts must always have protective iron screening if within 2 meters of a 25 KV live conductor.
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The time delay for the relays releasing an interlocking should be between 0.6 to 0.8 minutes.
The time delay for the relays releasing an interlocking should be between 0.6 to 0.8 minutes.
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All external circuits in AC electrified areas must work with double cutting.
All external circuits in AC electrified areas must work with double cutting.
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The maximum induced voltage from the traction system for signalling line circuits must not exceed 500 Volts under normal conditions.
The maximum induced voltage from the traction system for signalling line circuits must not exceed 500 Volts under normal conditions.
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The induced voltage in underground unscreened cable is considered to be 95 Volts/km on a single line under normal conditions.
The induced voltage in underground unscreened cable is considered to be 95 Volts/km on a single line under normal conditions.
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All signals should be located on the right side of the track for which it refers.
All signals should be located on the right side of the track for which it refers.
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The immunity of circuits terminated on relays/equipment must be at least 400 V AC.
The immunity of circuits terminated on relays/equipment must be at least 400 V AC.
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The distance between a traction mast and a signal post should not be less than 30 meters.
The distance between a traction mast and a signal post should not be less than 30 meters.
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It is permissible for a traction mast to be located less than 10 meters in advance of a signal post.
It is permissible for a traction mast to be located less than 10 meters in advance of a signal post.
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Signal posts must be sufficiently high to ensure visibility.
Signal posts must be sufficiently high to ensure visibility.
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On tangent tracks, signals should be located outside the OHE structure.
On tangent tracks, signals should be located outside the OHE structure.
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The signal sighting committee is responsible for deciding the location of signals in obstructed areas.
The signal sighting committee is responsible for deciding the location of signals in obstructed areas.
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No portion of a post or fittings of a color light signal can infringe the schedule of dimensions from the nearest track's center line.
No portion of a post or fittings of a color light signal can infringe the schedule of dimensions from the nearest track's center line.
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OHE mast distances are irrelevant and can be placed arbitrarily according to Drg.No.22-D6.
OHE mast distances are irrelevant and can be placed arbitrarily according to Drg.No.22-D6.
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The height of the center line of the red signal should be approximately 5.2 meters above rail level.
The height of the center line of the red signal should be approximately 5.2 meters above rail level.
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No OHE structures shall be provided in the same track space for at least 600 meters in front of the signals.
No OHE structures shall be provided in the same track space for at least 600 meters in front of the signals.
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Portal drop arms can be located at least 600 meters before signals in track spaces where signals are present.
Portal drop arms can be located at least 600 meters before signals in track spaces where signals are present.
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A special study is required if a portal drop arm is located in rear of the signal.
A special study is required if a portal drop arm is located in rear of the signal.
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The visibility of the signal should only be checked during the day.
The visibility of the signal should only be checked during the day.
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Signals without Junction Indicators between tracks do not require any distance restrictions for OHE structures.
Signals without Junction Indicators between tracks do not require any distance restrictions for OHE structures.
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The parameters for the location of portal drop arms are specified in a different section from where signals are discussed.
The parameters for the location of portal drop arms are specified in a different section from where signals are discussed.
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The drawing number Drg.No.22-D7 contains details regarding the setting distances of OHE masts for signals with Junction Indicators outside tracks.
The drawing number Drg.No.22-D7 contains details regarding the setting distances of OHE masts for signals with Junction Indicators outside tracks.
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The setting distance for Starter Signals of loop lines may be reduced under certain conditions.
The setting distance for Starter Signals of loop lines may be reduced under certain conditions.
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The drop arms of portals should normally be located less than 600 m before a signal.
The drop arms of portals should normally be located less than 600 m before a signal.
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A colour light signal without a Route Indicator can be higher than 5.2 m above rail level.
A colour light signal without a Route Indicator can be higher than 5.2 m above rail level.
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Special studies must be conducted for drop arms near signals when necessary.
Special studies must be conducted for drop arms near signals when necessary.
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All overhead equipment should ideally be located less than 600 m before the signal.
All overhead equipment should ideally be located less than 600 m before the signal.
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No work can be done within a distance of two meters from the live parts of the O.H.E without a 'permit-to-work'.
No work can be done within a distance of two meters from the live parts of the O.H.E without a 'permit-to-work'.
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The Engineering Inspector must apply for traffic and power blocks only after the work is completed.
The Engineering Inspector must apply for traffic and power blocks only after the work is completed.
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A tree should be maintained at least 4 meters away from the nearest live conductor.
A tree should be maintained at least 4 meters away from the nearest live conductor.
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Authorized O.H.E staff are responsible for cutting or trimming trees near live conductors.
Authorized O.H.E staff are responsible for cutting or trimming trees near live conductors.
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Fallen wires can be touched without turning off the power as long as they are earthed.
Fallen wires can be touched without turning off the power as long as they are earthed.
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Staff on station roofs can use tools near live Overhead Equipment without any precautions.
Staff on station roofs can use tools near live Overhead Equipment without any precautions.
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In D.C. traction areas, prior notice must be given to the Traction Distribution Officer before excavation work.
In D.C. traction areas, prior notice must be given to the Traction Distribution Officer before excavation work.
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The Gatekeeper must stop all road traffic immediately if wires drop at a level crossing.
The Gatekeeper must stop all road traffic immediately if wires drop at a level crossing.
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In exceptional cases, signals may be located on the left side of the track.
In exceptional cases, signals may be located on the left side of the track.
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The distance between the traction mast and signal post must not be less than 10 meters.
The distance between the traction mast and signal post must not be less than 10 meters.
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The signal sighting committee is essential for examining the site of signals on curved tracks or obstructed areas.
The signal sighting committee is essential for examining the site of signals on curved tracks or obstructed areas.
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Signal posts should be located within the OHE structure on tangent tracks.
Signal posts should be located within the OHE structure on tangent tracks.
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No color light signal can exceed the specified schedule of dimensions from the nearest track's center line.
No color light signal can exceed the specified schedule of dimensions from the nearest track's center line.
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OHE mast distances can be disregarded in favor of arbitrary placements.
OHE mast distances can be disregarded in favor of arbitrary placements.
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The height of color light signals without Route Indicators can be up to 5.2 meters above rail level.
The height of color light signals without Route Indicators can be up to 5.2 meters above rail level.
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It is mandatory for a signal post to be sufficiently high to ensure visibility.
It is mandatory for a signal post to be sufficiently high to ensure visibility.
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The minimum clearance required from the live conductor for a signal post or its fittings is 700 mm.
The minimum clearance required from the live conductor for a signal post or its fittings is 700 mm.
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The approved checklist for works to be completed must be issued by the Chief Electrical Engineer.
The approved checklist for works to be completed must be issued by the Chief Electrical Engineer.
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Signals must be positioned so that no part is less than 2 meters away from any authoritative structure.
Signals must be positioned so that no part is less than 2 meters away from any authoritative structure.
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Insulated tools are mandatory for maintenance staff to work safely on electrical equipment.
Insulated tools are mandatory for maintenance staff to work safely on electrical equipment.
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All overhead track crossings must be converted into insulated cables and all associated overhead wires removed.
All overhead track crossings must be converted into insulated cables and all associated overhead wires removed.
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A clearance certificate from DOT for anti-theft energisation is mandatory for voltages above 2.2 KV.
A clearance certificate from DOT for anti-theft energisation is mandatory for voltages above 2.2 KV.
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The signal clearance diagrams are applicable for all types of electrified tracks without exception.
The signal clearance diagrams are applicable for all types of electrified tracks without exception.
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The drawing number 22-D1 provides the signal clearance diagram specifically for curved tracks.
The drawing number 22-D1 provides the signal clearance diagram specifically for curved tracks.
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Metal structures close to overhead equipment can have dangerous $50$ volts induced on them.
Metal structures close to overhead equipment can have dangerous $50$ volts induced on them.
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When unloading rails, they should form a continuous metallic mass of length less than $300$ meters.
When unloading rails, they should form a continuous metallic mass of length less than $300$ meters.
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Permanent Way staff must maintain a distance of $500$ meters from electrified trains.
Permanent Way staff must maintain a distance of $500$ meters from electrified trains.
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In the case of a fire next to electrified equipment, immediate extinguishing efforts are required.
In the case of a fire next to electrified equipment, immediate extinguishing efforts are required.
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Electric shock victims can often be revived with prompt First Aid application.
Electric shock victims can often be revived with prompt First Aid application.
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It is safe for personnel to contact rails if they are $100$ meters away from an electrically hauled train.
It is safe for personnel to contact rails if they are $100$ meters away from an electrically hauled train.
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Catch sidings can be energized when electric trains are standing in them if personnel are evacuated.
Catch sidings can be energized when electric trains are standing in them if personnel are evacuated.
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Permanent Way tools must be insulated to be used as approved by the Chief Engineer.
Permanent Way tools must be insulated to be used as approved by the Chief Engineer.
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In AC traction areas, excavation work may proceed without notifying the concerned officers of the Electrical General Services.
In AC traction areas, excavation work may proceed without notifying the concerned officers of the Electrical General Services.
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Tiles and bricks are placed over cables in AC traction areas purely for aesthetic reasons.
Tiles and bricks are placed over cables in AC traction areas purely for aesthetic reasons.
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The specified tolerances for the alignment of the track with respect to the contact wire allow for significant deviations.
The specified tolerances for the alignment of the track with respect to the contact wire allow for significant deviations.
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Slewing or lifting of track outside agreed maintenance limits requires simultaneous alteration of the contact wire position.
Slewing or lifting of track outside agreed maintenance limits requires simultaneous alteration of the contact wire position.
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All bonds removed by the Engineering Department must be replaced by an external contractor.
All bonds removed by the Engineering Department must be replaced by an external contractor.
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Cranes may be operated without a permit in emergency situations as long as safety precautions are taken.
Cranes may be operated without a permit in emergency situations as long as safety precautions are taken.
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The overhead equipment must be rendered 'dead' before inspecting the roofs and sides of a tunnel.
The overhead equipment must be rendered 'dead' before inspecting the roofs and sides of a tunnel.
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The contact wire's height above the track can be adjusted freely without notifying the traction staff.
The contact wire's height above the track can be adjusted freely without notifying the traction staff.
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A tree can be maintained within 4 meters from the nearest live conductor without any risks.
A tree can be maintained within 4 meters from the nearest live conductor without any risks.
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A 'permit-to-work' must be obtained before starting work within a distance of two meters from the live parts of the O.H.E.
A 'permit-to-work' must be obtained before starting work within a distance of two meters from the live parts of the O.H.E.
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Cutting or trimming trees adjacent to live conductors can be carried out by any staff member.
Cutting or trimming trees adjacent to live conductors can be carried out by any staff member.
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The Traction Power Controller issues a 'Permit-to-work' only after the work is completely finished.
The Traction Power Controller issues a 'Permit-to-work' only after the work is completely finished.
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Fallen wires can be safely touched if they are switched off and not earthed.
Fallen wires can be safely touched if they are switched off and not earthed.
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When working on station roofs near live Overhead Equipment, using measuring tools is strictly prohibited.
When working on station roofs near live Overhead Equipment, using measuring tools is strictly prohibited.
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In D.C. traction areas, it is not necessary to inform the Traction Distribution Officer in advance for excavation work.
In D.C. traction areas, it is not necessary to inform the Traction Distribution Officer in advance for excavation work.
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The Engineering Inspector must apply for traffic and power blocks significantly ahead of the scheduled work to ensure safety.
The Engineering Inspector must apply for traffic and power blocks significantly ahead of the scheduled work to ensure safety.
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No aerial circuits are permitted in the electrified zone if they do not exceed a maximum induced voltage of 60 volts.
No aerial circuits are permitted in the electrified zone if they do not exceed a maximum induced voltage of 60 volts.
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All luminous indicators must be connected to external circuits in AC electrified areas for proper functionality.
All luminous indicators must be connected to external circuits in AC electrified areas for proper functionality.
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Polarized relays using permanent magnets may be safely used in any external circuit in 25 KV AC electrified areas.
Polarized relays using permanent magnets may be safely used in any external circuit in 25 KV AC electrified areas.
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Barring block-instrument circuits, earth-return circuits can be safely used in A.C. electrified territory.
Barring block-instrument circuits, earth-return circuits can be safely used in A.C. electrified territory.
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The wiring in equipment located in cabins must be insulated from the ground using wires that meet approved specifications.
The wiring in equipment located in cabins must be insulated from the ground using wires that meet approved specifications.
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A separate battery or DC-DC converter must only be provided for external circuits according to the regulations.
A separate battery or DC-DC converter must only be provided for external circuits according to the regulations.
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The coils of equipment indicated such as telephone type relays can be used in external circuits if adequately filtered.
The coils of equipment indicated such as telephone type relays can be used in external circuits if adequately filtered.
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All batteries and wiring associated with electrical signaling equipment must be properly insulated to prevent induced voltage issues.
All batteries and wiring associated with electrical signaling equipment must be properly insulated to prevent induced voltage issues.
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The time delay for relays releasing an interlocking should be between 0.6 to 0.8 seconds.
The time delay for relays releasing an interlocking should be between 0.6 to 0.8 seconds.
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The maximum induced voltage from the traction system for signalling line circuits must not exceed 300 Volts under normal conditions.
The maximum induced voltage from the traction system for signalling line circuits must not exceed 300 Volts under normal conditions.
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The induced voltage in underground unscreened cable is considered to be 116 Volts/km on a single line under normal conditions.
The induced voltage in underground unscreened cable is considered to be 116 Volts/km on a single line under normal conditions.
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All external circuits in AC electrified areas may work with single cutting.
All external circuits in AC electrified areas may work with single cutting.
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When terminated on relays/equipment, their immunity shall not be less than 500 V AC.
When terminated on relays/equipment, their immunity shall not be less than 500 V AC.
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The induced voltage in cable conductors is influenced by soil conductivity.
The induced voltage in cable conductors is influenced by soil conductivity.
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All signals in electrified areas can be of any type, not just colour light signals.
All signals in electrified areas can be of any type, not just colour light signals.
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The Signal Sighting Committee is responsible for checking actual visibility of signals.
The Signal Sighting Committee is responsible for checking actual visibility of signals.
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Special protective measures are not required if a portion of a signal post infringes the shaded area.
Special protective measures are not required if a portion of a signal post infringes the shaded area.
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Return current through rails is a factor that influences the induced voltage.
Return current through rails is a factor that influences the induced voltage.
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Signal posts must not infringe the un-shaded portion of the standard moving dimensions diagram.
Signal posts must not infringe the un-shaded portion of the standard moving dimensions diagram.
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The separation between catenary and cable does not impact the induced voltage.
The separation between catenary and cable does not impact the induced voltage.
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Masts, insulators, wires, and supports can totally obstruct the visibility of signals.
Masts, insulators, wires, and supports can totally obstruct the visibility of signals.
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The maximum permissible length for a QNA1 relay on a single line is 2.1 km.
The maximum permissible length for a QNA1 relay on a single line is 2.1 km.
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The maximum induced voltage for human safety is restricted to 600 V.
The maximum induced voltage for human safety is restricted to 600 V.
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The maximum length for unscreened cable in a double track is 220 meters.
The maximum length for unscreened cable in a double track is 220 meters.
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The AC immunity level for a K50 B1 relay is 130 volts.
The AC immunity level for a K50 B1 relay is 130 volts.
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A signal must be fed locally if located more than the prescribed distance from the signal control relays.
A signal must be fed locally if located more than the prescribed distance from the signal control relays.
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For a K50 relay, the maximum permissible length on a double line is 750 meters.
For a K50 relay, the maximum permissible length on a double line is 750 meters.
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110 V 50 Hz type is the only type allowed for signal feed systems.
110 V 50 Hz type is the only type allowed for signal feed systems.
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The maximum permitted length for direct feed of signal on single track is 180 meters.
The maximum permitted length for direct feed of signal on single track is 180 meters.
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The Train Controller must inform the staff about a break in the catenary/contact wire immediately.
The Train Controller must inform the staff about a break in the catenary/contact wire immediately.
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An authorized representative of the Signal Department must verify and certify the functioning of the signalling equipment after a break.
An authorized representative of the Signal Department must verify and certify the functioning of the signalling equipment after a break.
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All signalling equipment will continue to operate normally even if the block operations are suspended.
All signalling equipment will continue to operate normally even if the block operations are suspended.
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The existing signals must have a working clearance of at least 2 meters.
The existing signals must have a working clearance of at least 2 meters.
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The guidelines for anti-theft charging must be disregarded in favor of other procedures.
The guidelines for anti-theft charging must be disregarded in favor of other procedures.
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No part of the signal post should be closer than 500 mm from the live conductor.
No part of the signal post should be closer than 500 mm from the live conductor.
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Immediate action is unnecessary if abnormal working is noticed in signalling equipment.
Immediate action is unnecessary if abnormal working is noticed in signalling equipment.
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The clearance for safety requires individuals to stay at least 2.5 meters away from live parts of the O.H.E.
The clearance for safety requires individuals to stay at least 2.5 meters away from live parts of the O.H.E.
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Maintenance staff are supplied with insulated tools for safety.
Maintenance staff are supplied with insulated tools for safety.
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The replacement of existing DC track relays by AC immunized relays is necessary for 2.2 KV charging.
The replacement of existing DC track relays by AC immunized relays is necessary for 2.2 KV charging.
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The distance between overhead wires and signals must be at least 1 meter.
The distance between overhead wires and signals must be at least 1 meter.
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A detailed test report is optional for the Signal Department's certification process.
A detailed test report is optional for the Signal Department's certification process.
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All staff must be informed about any break in the Traction Overhead Lines by the quickest means possible.
All staff must be informed about any break in the Traction Overhead Lines by the quickest means possible.
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A certificate of clearance from DOT is required for anti-theft energisation at 2.2 KV.
A certificate of clearance from DOT is required for anti-theft energisation at 2.2 KV.
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An approved checklist for works must be issued by the Principal Chief Signal and Telecom Engineer.
An approved checklist for works must be issued by the Principal Chief Signal and Telecom Engineer.
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All overhead track crossings must be converted into cables and overhead wires should remain.
All overhead track crossings must be converted into cables and overhead wires should remain.
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Continuity of return current path can be achieved by using mild steel straps or G.I. wire ropes when space is constrained.
Continuity of return current path can be achieved by using mild steel straps or G.I. wire ropes when space is constrained.
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Cross bonds are used to increase the resistance of the current in adjacent tracks.
Cross bonds are used to increase the resistance of the current in adjacent tracks.
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Structure bonds connect all structures supporting overhead equipment to the earth for better grounding.
Structure bonds connect all structures supporting overhead equipment to the earth for better grounding.
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Failure of insulators or leakage of current does not affect the supply from the substation.
Failure of insulators or leakage of current does not affect the supply from the substation.
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Precautions must be taken due to the proximity of a non-live conductor.
Precautions must be taken due to the proximity of a non-live conductor.
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The return current in the rails can cause a potential difference between the rail and the surrounding mass of earth.
The return current in the rails can cause a potential difference between the rail and the surrounding mass of earth.
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Removal or tampering of bonds can lead to safe working conditions.
Removal or tampering of bonds can lead to safe working conditions.
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Potential differences can occur between two ends of a fractured rail.
Potential differences can occur between two ends of a fractured rail.
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