Indian Railway C&W Supervisors Guide
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Questions and Answers

What is the diameter of a new wheel as specified?

  • 127 mm
  • 825 mm
  • 120 mm
  • 915 mm (correct)
  • What is the maximum permissible diameter variation for wheels on the same coach?

  • 0.5 mm
  • 5.0 mm
  • 13.0 mm (correct)
  • 10.0 mm
  • Which defect occurs when the flange thickness reduces to 16 mm or less?

  • Hollow Tyre
  • Deep Flange
  • Thin Flange (correct)
  • Sharp Flange
  • What is the consequence of a sharp flange defect?

    <p>Shearing of fish plate bolts</p> Signup and view all the answers

    What causes a radius too small at the root of the flange defect?

    <p>Radius reduces below 13R</p> Signup and view all the answers

    What is the primary purpose of the compendium on carriage and wagon?

    <p>To upgrade the knowledge of C&amp;W supervisors</p> Signup and view all the answers

    Who is recognized for their substantial efforts in the compilation of the training material?

    <p>Shri T.S. Bhati</p> Signup and view all the answers

    What vital role do C&W supervisors play in the Indian Railway?

    <p>Maintaining C&amp;W rolling stock and ensuring punctuality</p> Signup and view all the answers

    What is considered a moral duty of the Supervisor Training Center?

    <p>To upgrade and update the knowledge of C&amp;W supervisors</p> Signup and view all the answers

    Which of the following is NOT mentioned as a contributor to the training material?

    <p>Shri R.K. Singh</p> Signup and view all the answers

    What should the readers of this booklet be mindful of regarding its content?

    <p>It may contain errors in printing or context</p> Signup and view all the answers

    Which of the following outcomes is anticipated from the use of this book by C&W supervisors?

    <p>Enhanced knowledge and reduced detachments</p> Signup and view all the answers

    What is the primary purpose of passenger coaching vehicles (PCV)?

    <p>To transport passengers in whole or partial portions</p> Signup and view all the answers

    What is the maximum permissible speed for LHB coaches?

    <p>160 kmph</p> Signup and view all the answers

    How long is the codal life of LHB and hybrid coaches?

    <p>30 years</p> Signup and view all the answers

    Which of the following is a component of the primary suspension system in an ICF bogie?

    <p>Dash pot spring</p> Signup and view all the answers

    What type of coaching stock includes salons and inspection cars?

    <p>Other coaching vehicle (OCV)</p> Signup and view all the answers

    Which of these dimensions corresponds to ICF coaches for length over buffer?

    <p>22296 mm</p> Signup and view all the answers

    Which structural element is NOT a part of the ICF bogie underframe?

    <p>Brake beam</p> Signup and view all the answers

    What is one of the main features of the ICF A/C (All Coil) bogie?

    <p>Enhanced shock absorption system</p> Signup and view all the answers

    Which component is part of the secondary suspension system in an ICF bogie?

    <p>Bogie bolster upper plank</p> Signup and view all the answers

    What is the minimum buffer height for coaching stock when releasing from the POH Workshop?

    <p>1090 mm</p> Signup and view all the answers

    Which material is primarily used for the fabrication of the ICF coach shell?

    <p>Corten Steel</p> Signup and view all the answers

    What is the maximum allowable height for the buffer in an empty condition?

    <p>1105 mm</p> Signup and view all the answers

    How much has the weight of the ICF shell been reduced compared to the IRS coach shell?

    <p>26% to 32%</p> Signup and view all the answers

    What is the thickness of the roof shell of the ICF coach?

    <p>1.6 mm</p> Signup and view all the answers

    What is the diameter of a new wheel used in ICF coaches?

    <p>915 mm</p> Signup and view all the answers

    What should be the gap between the axle box lug and the safety loop?

    <p>40 mm</p> Signup and view all the answers

    What is a possible thickness of compensating metallic rings that can be used if necessary?

    <p>8 mm or 12 mm</p> Signup and view all the answers

    How thick should wooden packing be for a wheel below 839 mm in diameter?

    <p>38 mm</p> Signup and view all the answers

    In ICF coach construction, how are the body side pillars, roof carlines, and other components joined together?

    <p>Welded together</p> Signup and view all the answers

    What is the purpose of the special screws with copper asbestos washers on the bogie side frames?

    <p>To maintain air tightness of the tapped holes</p> Signup and view all the answers

    Which materials are the helical springs in the ICF bogie made from?

    <p>Chrome vanadium/chrome molybdenum steel</p> Signup and view all the answers

    What is the condemning size for the wearing plate in the bogie?

    <p>8.5 mm</p> Signup and view all the answers

    How are the anchor links positioned in relation to the floating bogie bolster?

    <p>Diagonally across the bolster</p> Signup and view all the answers

    What is the primary role of the silent block bushes in the anchor links?

    <p>To transmit force without shock and reduce noise</p> Signup and view all the answers

    What does the mechanical advantage of 5.504 in the bogie brake rigging indicate?

    <p>The force multiplication effect</p> Signup and view all the answers

    What type of springs are primarily used in both the primary and secondary suspension of ICF bogies?

    <p>Helical springs</p> Signup and view all the answers

    Which component is not directly involved in supporting the coach body?

    <p>Brake rigging</p> Signup and view all the answers

    What is the function of the bolster coil springs in the bogie bolster suspension system?

    <p>To absorb shocks from the rail</p> Signup and view all the answers

    How do the two anchor links function in relation to tractive and braking forces?

    <p>They transmit forces and allow movement</p> Signup and view all the answers

    Which component is NOT part of the conventional draft gear in Indian Railways?

    <p>Ferrule</p> Signup and view all the answers

    What feature identifies the Enhanced Screw Coupling in Indian Railways?

    <p>Dumbal mark on the coach</p> Signup and view all the answers

    Which of the following lengths corresponds to the Enhanced Screw Coupling when fully tightened?

    <p>751 mm</p> Signup and view all the answers

    Which part of the screw coupling is responsible for connecting two ends securely?

    <p>Shackle</p> Signup and view all the answers

    Which component among the parts of the conventional draft gear absorbs shock during operation?

    <p>Draft Pad</p> Signup and view all the answers

    What is one of the main features contributing to the performance of an ICF A/C bogie?

    <p>Incorporation of all-coil suspension system</p> Signup and view all the answers

    Which component is vital for the effective functioning of the bogie brake rigging?

    <p>Anchor links</p> Signup and view all the answers

    In ICF coach construction, what aspect significantly reduces overall weight compared to IRS coach shells?

    <p>Optimization of material thickness</p> Signup and view all the answers

    Which configuration is critical for maintaining the balance of forces within an ICF bogie?

    <p>Uniform loading across all axles</p> Signup and view all the answers

    What is a notable consequence of undersized flange thickness in wheels?

    <p>Higher likelihood of derailment due to excessive wear</p> Signup and view all the answers

    Which factor influences the selection of materials for helical springs in ICF bogies?

    <p>Fatigue resistance and longevity</p> Signup and view all the answers

    What is the intended benefit of using special screws with copper asbestos washers on bogie side frames?

    <p>Prevention of galvanic corrosion</p> Signup and view all the answers

    What must be checked and corrected for axle box guides?

    <p>Their squareness and alignment</p> Signup and view all the answers

    What is recommended for sealing vent holes after maintenance?

    <p>Gaskets and screws</p> Signup and view all the answers

    What might happen to the guide bush if it is worn?

    <p>It may lead to misalignment</p> Signup and view all the answers

    What issue is associated with worn lower spring seat surfaces?

    <p>Potential uneven wear on springs</p> Signup and view all the answers

    What is the role of alignment gauges in relation to axle box guides?

    <p>To verify squareness and alignment</p> Signup and view all the answers

    Which maintenance action is crucial for ensuring the integrity of vent holes?

    <p>Sealing with gaskets and tightening screws</p> Signup and view all the answers

    What is an indicator of wear in guide rings?

    <p>Deformed shape</p> Signup and view all the answers

    What is a likely consequence of not correcting axle box guide alignment?

    <p>Increased wear on connected components</p> Signup and view all the answers

    What material is typically used for sealing vent holes?

    <p>Gaskets</p> Signup and view all the answers

    What generally is the impact of a worn axle box guide on the coach's performance?

    <p>It may cause vibrations and instability</p> Signup and view all the answers

    What is the specified piston stroke for the conventional type Air Brake system?

    <p>90 ± 10 mm</p> Signup and view all the answers

    What is the clearance labeled as 'B' and its specified dimensions?

    <p>Clearance between bolster top and bottom of sole bar, 40 ± 5 mm</p> Signup and view all the answers

    Which of the following is the riding index value for ICF bogies?

    <p>3.25 to 3.50</p> Signup and view all the answers

    What is the new length of the truss bar hanger?

    <p>235 mm</p> Signup and view all the answers

    What is the diameter of the sleeve mounted journal in ICF coaches?

    <p>120 x 113.5 mm</p> Signup and view all the answers

    Which force transmission element is situated between the brake cylinder and the axle wheel disc?

    <p>Brake block</p> Signup and view all the answers

    What maximum speed has been trialed for the ICF bogie?

    <p>140 kmph</p> Signup and view all the answers

    Which of the following is a common defect found in axle guide assembly?

    <p>Perished rubber components</p> Signup and view all the answers

    What provision is made for the clearance between the axle box crown and safety bolt for a 13 T axle?

    <p>43 +0/-3 mm</p> Signup and view all the answers

    What mechanical advantage does the bogie brake rigging provide for non-ac coaches?

    <p>7.644</p> Signup and view all the answers

    What is the primary function of equalizing stays in the bogie system?

    <p>To prevent lateral thrust on the bolster springs</p> Signup and view all the answers

    How are hydraulic shock absorbers designed in relation to load capacity?

    <p>600 kg at 10 cm/sec</p> Signup and view all the answers

    What causes low buffer height in ICF coaching stock?

    <p>Excessive wear on wheel circumference</p> Signup and view all the answers

    What is the condemning size for the steel piece in the bogie structure?

    <p>8.5 mm</p> Signup and view all the answers

    What component supports the bolster in the secondary suspension of the bogie?

    <p>Helical coil springs</p> Signup and view all the answers

    Which part of the bogie system allows for safe vertical oscillation damping?

    <p>Hydraulic shock absorbers</p> Signup and view all the answers

    What should be done before lifting the body from the bogie?

    <p>Disconnect buffer and equalizing stays</p> Signup and view all the answers

    What is a key design feature of the BSS hangers in the bogie structure?

    <p>Pin connections for lateral movement</p> Signup and view all the answers

    Which of the following is a modification made to the bogie brake rigging?

    <p>Increased load capacity for AC coaches</p> Signup and view all the answers

    What does IOH stand for in the context of coach maintenance?

    <p>Intermediate Overhauling</p> Signup and view all the answers

    Which maintenance type occurs every 18 months for passenger carrying vehicles?

    <p>POH</p> Signup and view all the answers

    What is the primary responsibility of a primary maintenance depot?

    <p>Preparation of DRS card</p> Signup and view all the answers

    When should a coach undergo maintenance at the primary end if it is a passenger train without a toilet?

    <p>After 3500 km or 7 days</p> Signup and view all the answers

    What is one of the significant tasks during the POH of a coach?

    <p>Replacing all under gear if necessary</p> Signup and view all the answers

    What is the primary benefit of the compendium for C&W supervisors?

    <p>It helps in upgrading knowledge and improving punctuality.</p> Signup and view all the answers

    What role do C&W supervisors play in the Indian Railway context?

    <p>They maintain C&amp;W rolling stock to ensure punctuality.</p> Signup and view all the answers

    Which statement about the Supervisor Training Center is true?

    <p>It is responsible for upgrading C&amp;W supervisors’ knowledge.</p> Signup and view all the answers

    Who provided valuable guidance during the creation of the training material?

    <p>Shri A.K. Kansal</p> Signup and view all the answers

    What aspect of the compendium is emphasized regarding its content?

    <p>It should not be quoted for technical or legal references.</p> Signup and view all the answers

    What is the intended outcome of using the training booklet for C&W supervisors?

    <p>It is expected to improve punctuality and reduce detachments.</p> Signup and view all the answers

    What challenge is acknowledged regarding the booklet?

    <p>There may be errors in printing or context.</p> Signup and view all the answers

    What should be used to check the squareness and alignment of axle box guides?

    <p>Alignment gauges</p> Signup and view all the answers

    Vent holes must be sealed with which of the following to ensure proper function after topping?

    <p>Rubber gaskets</p> Signup and view all the answers

    What is a critical action for the upper spring seat in an axle box?

    <p>Maintaining its rubber integrity</p> Signup and view all the answers

    Which of the following is addressed regarding guide bush wear?

    <p>Replacement intervals</p> Signup and view all the answers

    What should be checked if the lower spring seat surface exhibits wear?

    <p>Condition of the axle box</p> Signup and view all the answers

    Which maintenance aspect is crucial for the guide ring of the axle?

    <p>Ensuring lubrication retention</p> Signup and view all the answers

    What is the consequence of misaligned axle box guides?

    <p>Unstable coach trajectory</p> Signup and view all the answers

    What should be done to prevent water ingress at the vent holes?

    <p>Seal with gaskets and tighten screws</p> Signup and view all the answers

    Which of the following may indicate a need for axle box maintenance?

    <p>Squeaking noise during operation</p> Signup and view all the answers

    What is the frequency of the Intermediate Overhauling (IOH) required for coaching trains?

    <p>Every nine months +30 days</p> Signup and view all the answers

    What is the procedure for coaches detached due to major defects?

    <p>They are sent to the pit line for sub-assembly replacement.</p> Signup and view all the answers

    What happens to coaches detached from the rake for examination?

    <p>They are taken to the sick line for repairs.</p> Signup and view all the answers

    Which type of maintenance is performed exclusively in a nominated workshop for certain coaches?

    <p>Intermediate Overhauling of newly built coaches</p> Signup and view all the answers

    What is included in the maintenance procedure of coaches detached from the rake?

    <p>Examination and necessary repairs</p> Signup and view all the answers

    After how many months is the first intermediate overhauling of newly built coaches scheduled?

    <p>12 months</p> Signup and view all the answers

    During maintenance, what is primarily focused on when coaches are detached due to defects?

    <p>Replacement of defective sub-assemblies</p> Signup and view all the answers

    What is the purpose of detaching a coach from the rake?

    <p>To facilitate convenient and faster maintenance</p> Signup and view all the answers

    What should special attention be given to during the maintenance of coaching trains?

    <p>Intermediate Overhauling protocols</p> Signup and view all the answers

    Where is the process of cleaning and minor maintenance performed?

    <p>At the washing line</p> Signup and view all the answers

    What is the total mechanical advantage of bogie brake rigging for AC coaches?

    <p>8.40</p> Signup and view all the answers

    What is the primary function of equalizing stays in bogies?

    <p>To prevent lateral thrust on the bolster springs.</p> Signup and view all the answers

    What is the capacity of the hydraulic shock absorbers fitted on a 13-ton bogie?

    <p>600 kg</p> Signup and view all the answers

    What does the lower spring plank support in bolster spring suspension?

    <p>Helical coil springs.</p> Signup and view all the answers

    What is the condemning size for a bronze piece in the ICF coach?

    <p>42 mm</p> Signup and view all the answers

    What role do BSS hangers play in the suspension system of a bogie?

    <p>They suspend the lower spring plank.</p> Signup and view all the answers

    What type of connections do equalizing stays have at both ends?

    <p>Pin connections.</p> Signup and view all the answers

    What is one potential consequence of excessive wear on side bearer's metal?

    <p>Low buffer height.</p> Signup and view all the answers

    How does the total mechanical advantage affect the braking system of a bogie?

    <p>It increases braking efficiency.</p> Signup and view all the answers

    Study Notes

    Supervisor's Training Centre

    • Located in Jhansi, North Central Railway
    • Hand Book for C&W Supervisors released by Shri Harish Chandra Joshi, General Manager, North Central Railway
    • Released on 27/08/2011, on the occasion of the Mechanical Officers' Meet.
    • Critically important role in supervisor training for Mechanical Department, NCR
    • The Handbook contains training material on disaster management

    Carriage & Wagon Supervisors

    • Play a vital role in train operations
    • Crucial to ensure safe running of trains and assist in train operations.
    • Updated knowledge and skills are required for ensuring safe and efficient operations.
    • Supervisor Training Centre (Jhansi) has created a handbook for C&W Supervisors.
    • Supervisor Training Centre is playing an important role in the training of supervisors of the Mechanical Department of North Central Railway (NCR)

    Handbook Content

    • Includes the latest modifications and instructions for coaching and wagon modifications.
    • Includes the latest fittings in coaching coaches.
    • Useful to update knowledge for C&W Supervisors and improve train operational efficiency.
    • Covers latest developments in rolling stock.
    • Discusses LHB coaches, H-Type coupler, WSP system in braking

    Chief Mechanical Engineer

    • Chief Mechanical Engineer of North Central Railway, Allahabad
    • A.K. Kansal
    • Anoop Kumar
    • Ashesh Agrawal
    • A.K. Misra
    • G.C. Budhalakoti
    • D. K. Nayak
    • B.M. Agrawal
    • Atulya Sinha
    • D. N. Verma - Chief Instructor
    • S. B. Kumar - Trainee
    • T.S. Bhati - Principal, STC
    • N.K. Singh -Chief Instructor,STC
    • Mentioned as approving and contributing to the handbook's creation.
    • Shri. G. C. Budhalakoti
    • Shri. D. K. Nayak
    • Shri. B. M. Agrawal
    • Shri. Atulya Sinha

    Additional Information

    • The handbook covers carriage & wagon supervisors, including various aspects of their duties and responsibilities and includes the latest developments in rolling stock.
    • It was released to improve the efficiency of train operation and reduce line failures.
    • The document contains information and directions for supervisors training at STC.
    • The document discusses various training material related to mechanical aspects of carriages and wagons.
    • The handbook is useful to upgrade the knowledge of carriage & wagon Supervisors.
    • This handbook is inspired by the Chief Mechanical Engineer, A. K. Kansal.
    • The handbook's creation involved significant effort from instructors of the STC.

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    Description

    Test your knowledge on the standards and practices of the Carriage and Wagon (C&W) division in Indian Railways. This quiz covers topics ranging from wheel specifications to the crucial roles of supervisors in maintaining safety and effectiveness. Perfect for C&W trainees and railway professionals looking to refresh their knowledge.

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