Gr.B AME 70 % Quota Examination – Comprehensive Study Notes

Coach & Bogie Technical Parameters

  • New ICF coach wheel
    • Nominal (new) diameter : 915\,\text{mm}
    • Condemning dia. for BOX-N wagon wheel : 906\,\text{mm}
  • ICF bogie force-transmission elements
    • Centre pivot pin – carries vertical load + transmits tractive forces
    • Side bearer – takes body load
    • Equilibrating stays – check lateral thrust on bolster springs
    • Anchor links do NOT take tractive/braking forces ➜ statement tested in exam
  • LHB coach features
    • Coupler : H-type CBC
    • Bogie / body force path : Traction centre
    • Frequent wheel defect : Shelled tread
    • Emergency quick-fill device : Brake accelerator valve (helps in faster brake build-up when driver makes an emergency application)
  • FIBA secondary air-suspension (LHB)
    • Duplex check valve equalises pressure between left & right air springs of same bogie
  • Draw-gear (ICF)
    • Components : Draw bar, Draft key, Draft gear, Rubber pads
    • NOT a component : Destruction tube (dummy answer in exam)
  • Coach lifting with a 140 t crane
    • Use lifting beam between slings & body to spread load and avoid body damage

Brake Systems & Pneumatics

  • Coaching rake air-leakage test (BP pressure drop)
    • Max. allowable leak : 0.6\,\text{kg cm}^{-2} in 180\,\text{s} after cock shut
  • Bogie-mounted brake system (BMBS) – Wagons
    • 2 brake cylinders/bogie + cylinders incorporate in-built automatic slack adjuster
  • CASNUB bogie variants
    • 22 NL (non-BMBS) : brake head is integral with brake beam
  • LHB brake control
    • Brake accelerator valve at coach end senses sudden \Delta P in BP and vents aux. reservoir for quicker cylinder build-up
  • Brake power certificates (BPC)
    • BOXNHL CC rake (trial) validity : 10000\,\text{km} / (35+5)\,\text{days}
    • Premium freight train BPC colour : Green

Wheel / Axle Health Monitoring

  • On-line Monitoring of Rolling stock (OMRS) misses high bearing temperature; detects flat, shelling, etc.
  • Ultrasonic axle test normally finds cracks, inclusions, stress-risers; corrosion is NOT generally picked

Electrical & HVAC on Coaches

  • Roof-mounted AC package unit supply : 415\,\text{V}, 3\,\phi, 50\,\text{Hz}
  • VESDA = Very Early Smoke Detection Apparatus (aspirated smoke sampling)

Freight Wagons & Brake Vans

  • Side-discharge open wagon type : BOBYN (for coal/ore)
  • Brake van with CASNUB bogies : BVCM
  • Centre Buffer Coupler (CBC) defects causing uncoupling :
    • Excess knuckle or lock wear
    • Wear of bearing-piece slot on operating handle
    • Any of the above ➜ all options correct in exam
  • ODC speed limits : Class “B” — 40\,\text{km h}^{-1} max.

Locomotive Systems

ALCO (2600 HP)

  • Air-compressor : driven off diesel crankshaft via flexible coupling
  • Compression ratio : 11.75:1
  • Pressurised cooling water system : raises boiling point, dissipates more heat, avoids hot-engine faults (✓ all)

EMD (HHP 4000/4500 HP)

  • Radiator fan : 3-phase induction motor drive
  • Companion alternator feeds radiator-fan motor circuit
  • Bogie frame : High-Tensile Cast Steel (HTCS)

Vande Bharat Trainset – 3-ϕ propulsion

  • Traction inverter converts DC-link output to variable-V/f 3-ϕ AC for traction motors

Scheduled Maintenance & Inspection

  • 1400 HP DEMU Cummins DPC — ‘D’ check periodicity : 18\,\text{months} \pm30\,\text{d}
  • Wheel defects – LHB shelled tread, high flange, flat, etc.

Safety, Operating Rules & Signalling

  • SPAD (Signal Passed At Danger) : poor running-room food is NOT a cause
  • Loco-pilot feels jerk on passenger train → Must stop at next block station without clearing section & inform SM
  • Fixed vs non-fixed signals :
    • Fixed : Home, Starter, Shunt
    • Detonators are hand signals, hence NOT fixed
  • Speed indicator board shape : Triangular; speed shown in multiples of 10\,\text{km h}^{-1}
  • Working Time-Table (WTT) carries permanent speed restrictions, MPS & Engg. allowance but NOT temporary restrictions (those are in T/371s, Caution Orders)

Disaster Management & Breakdown Cranes

  • NDMA chair : Prime Minister; NDRF = National Disaster Response Force
  • Commercial Dept. pays ex-gratia to victims’ kin
  • 140 t crane
    • Brakes : Wheel-mounted disc
    • Safe working : Parking brake ON, outriggers firmly grounded, SLI must not be bypassed (unsafe practice)
    • Cold-cutting equipment (ART/ARMV) for hole making : Tre-panner

Materials, Metallurgy & Processes

  • Stainless-steel corrosion resistance from \text{Cr} (≥ 10.5 wt%)
  • Surface-hardening no-go process : Tempering (it softens)
  • Welding without consumable electrode : GTAW (TIG)
  • Casting feeder column : Riser
  • Forging essential tool : Die
  • Milling : multi-edge cutter rotary machining
  • Non-Destructive vs destructive testing : Impact test is destructive
  • Heat-treatment surface hardening options : Carburising, Nitriding, Cyaniding (case-depth diffusional)

Painting & Surface Prep.

  • PU vs Alkyd paint
    • PU superior in abrasion, corrosion, gloss retention
    • Not low cost (false statement in exam)
  • Surface cleaning steps pre-painting
    • Shot-blasting, hot phosphating, scraping
    • Wet-flattening is NOT a recognised cleaning step
  • Paint film defects
    • Peeling : rupture/lift of top layer
  • Electrical fires category : Class E

Workshop Management & Production Control

  • Process costing suits continuous/identical-unit flow ➜ Wheel manufacturing
  • ‘Occupier’ under Factories Act for a Railway workshop appointed by General Manager
  • Production Control Org.
    • Inspection section certifies job/route cards
  • Group Incentive Scheme salient point
    • Idle time booked only for power failure > 1 h
  • Factories Act weekly work-hour limit (incl. overtime) : 60\,\text{h}

Industrial Relations & Labour Acts

  • Protective Act against exploitation : Trade Union Act, 1926
  • PSU under MoR : RITES, RVNL, IRCON (all)
  • Millwright shop is a service/maintenance shop, not production

Finance, Estimates & Contracts

  • Capital vs Revenue
    • Mechanised coach cleaning → charge to Revenue, NOT Capital
  • Sundry revenue excludes parcel earnings (comes under Goods)
  • GM’s power (PH-4200) : sanction works up to 10\,\text{cr}
  • PCME’s power to sanction M&P (PH-4100) : \le 50\,\text{lakh}
  • Environmental works ceiling in estimates : 0.5\% of total cost
  • Performance Guarantee for works contracts : 5\% of contract value
  • Rate Contract definition : supplier obliged to supply any qty at fixed rate during validity
  • GEM may be used for service contracts (mechanised cleaning, OBHS, station cleaning, etc.)
  • Tender Committee membership limit : Sr. Scale exec officer can sit up to \text{₹ }4\,\text{cr} for open tenders
  • PAC item indents : PHOD signature required > ₹ 25 lakh
  • Works Estimate – environmental component \le 0.50\%

Stores & Codes

  • PL (Price List) number digits : 8
  • Main group code “30–39” : Carriage & Wagon items

HR , Leave & Passes

  • Medical category for direct JE/Mech (PU) : C-1
  • Child-Care Leave
    • 730 days total; can be clubbed with other leave; draws full pay only for first 365 days (thereafter 80 %) ➜ exam stated: “full salary for entire 730 d” is incorrect
    • Also available to single male employees
  • MACP
    • 3 financial up-gradations at 10-20-30 yrs; does NOT alter seniority (wrong statement tested)
  • LAP encashment during service : max 60\,\text{days}
  • Suspension entitlements : subsistence allowance, medical treatment, stay at HQ unless permitted; not full pay, no leave ex-India, etc.
  • Major vs minor penalties (D&AR)
    • Recovery for pecuniary loss is minor not major
    • Suspension is not a penalty (administrative action)
  • HRMS modules
    • Present : Pass, Leave, Cadre Mgmt.
    • D&AR module not yet live
  • Electronic passes not issued through HRMS : School pass for bona-fide student
  • Post-retirement Complimentary Passes (Grp A/B) : 3 sets / year
  • Commutation of pension : max 40\% of basic
  • Qualifying service for pension : \ge 10\,\text{yrs}
  • Family pension eligibility includes spouse, dependent son (<25 yr), mentally retarded son ➜ any of these

Official Language & Constitutional Provisions

  • Constitution – Part V, Article 120 covers language in Parliament
  • Hindi awards by Rly Board
    • Maithili Sharan Gupta award – Hindi poetry book
  • Region-“B” state exclusion : West Bengal (hence falls in Region C)
  • Hindi courses equivalence
    • Pragya = Matric level Hindi competency
  • Section 3(3) OL Act ➜ general orders, tender notices, press releases etc. to be bilingual (Hindi + English)
  • Zonal OL Implementation Committee chaired by GM
  • National Hindi Day : 14 Sept
  • 8th Schedule languages : 22
  • Correct Hindi meaning check : Recommendation ≠ समझौता (should be “सिफ़ारिश”)

Safety Hours, HOER & Misc.

  • HOER categories – Waiting-room bearer ⇒ "Essentially Intermittent" (EI)
  • Non-fixed signal example : detonating (torpedo)
  • Cold cutting hole-maker – Tre-panner
  • Safe Load Indicator on crane must not be bypassed

Abbreviations & Codes Quick-List

  • VESDA – Very Early Smoke Detection Apparatus
  • FIBA – (LHB) Fault Indication & Brake System for air-sprung bogies
  • CBC – Centre Buffer Coupler
  • BMBS – Bogie-Mounted Brake System
  • BPC – Brake Power Certificate
  • OMRS – On-line Monitoring of Rolling Stock
  • HMIS – Hospital Management Info. System
  • HRMS – Human Resource Mgmt. System
  • GEM – Govt. e-Marketplace
  • NDMA/NDRF – National Disaster Mgmt. Authority / Response Force

These consolidated notes reproduce all key data points from the Shift-1 70 % AME Gr-B question paper, inter-linking technical, operational, financial and statutory knowledge for rapid revision.