Transformer and Traction Motor Inspection Quiz
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Questions and Answers

What color should the silica gel in the transformer be to indicate it is healthy?

  • Yellow
  • Orange (correct)
  • Grey
  • Blue

    • Which of the following should be checked to ensure the traction motor is functioning correctly?

  • Color of the silica gel
  • Visual inspection for external hitting (correct)
  • Lamp indications on the driver desk
  • Oil level in the transformer

    • What is the proper action to take if the oil level in the transformer is below the specified mark?

  • Replace the transformer
  • Refill the oil to the appropriate level (correct)
  • Only check the silica gel
  • Ignore if there is no leakage

    • Which aspect of the Motor Suspension Unit (MSU) must be checked for signs of overheating?

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

    During the inspection of the driver desk, which of the following should be checked?

    <p>Operation of all switches</p> Signup and view all the answers

    What should be done if the oil in the gear case appears to be an unusual color?

    <p>Replace the oil immediately</p> Signup and view all the answers

    Which part of the traction motor inspection focuses on ensuring cables are not damaged?

    <p>Check for rubbing and damage of traction motor cables</p> Signup and view all the answers

    What should be checked to ensure the safety of the passenger area?

    <p>Doors for operation and any damages</p> Signup and view all the answers

    What is important to check regarding the seats in the passenger area?

    <p>Intactness of foundation bolts and any damage</p> Signup and view all the answers

    During the operation check, which of the following brake application timings is correct for the EP brake?

    <p>4-6 seconds for both application and release</p> Signup and view all the answers

    Which component must be ensured for intactness in hatch doors?

    <p>Welding of the hatch door bracket from inside</p> Signup and view all the answers

    What safety feature is mentioned regarding the articulation bearing bolt?

    <p>Availability of safety covers</p> Signup and view all the answers

    What is the minimum acceptable thickness for Wearing Strips on the pantograph?

    <p>3 mm</p> Signup and view all the answers

    Which component must slide freely while being pressed?

    <p>Bow Plunger</p> Signup and view all the answers

    What should be ensured regarding the Screws on the Wearing Strips?

    <p>They should be properly secured.</p> Signup and view all the answers

    What type of leakage should be checked in the horizontal damper?

    <p>Oil leakage</p> Signup and view all the answers

    What is critical to check regarding the flexible shunts?

    <p>That strands are not broken</p> Signup and view all the answers

    Which component requires inspection for both air leakage and free movement?

    <p>Servo Motor Piston Rod</p> Signup and view all the answers

    What should be done in case of identifying any abnormality in the pantograph sub-assemblies?

    <p>Replace the affected part.</p> Signup and view all the answers

    Which component is not mentioned for checking air leakage?

    <p>Rocker Assembly</p> Signup and view all the answers

    What is the purpose of the steel bracket on the lower articulation?

    <p>To prevent earthing of the anti-balancing tube.</p> Signup and view all the answers

    What is the recommended interval for purging the air dryer for Knorr Bremse make?

    <p>120 seconds</p> Signup and view all the answers

    Which color of the humidity indicator signifies an OK status?

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

    What should be checked to ensure there is no air leakage from the air dryer?

    <p>Duplex piston valve</p> Signup and view all the answers

    Which item needs to be inspected visually for external damages?

    <p>Air dryer</p> Signup and view all the answers

    What is the significance of checking the color of the desiccant in the air dryer?

    <p>Shows the healthiness of the desiccant</p> Signup and view all the answers

    What is required for the leveling valve installation rod?

    <p>It must be vertical</p> Signup and view all the answers

    When checking the air spring flexible hoses, which of the following could be a reason for replacement?

    <p>Rubbing or damage</p> Signup and view all the answers

    What is checked to ensure the integrity of the air spring base frame?

    <p>Welded joints for cracks</p> Signup and view all the answers

    Which component's intactness must be ensured for the Leveling Valve protection plate?

    <p>Foundation bolts</p> Signup and view all the answers

    What does the presence of baffle plates in the air spring reservoir accomplish?

    <p>Protects the drain cock</p> Signup and view all the answers

    What should be checked first to ensure electrical functionality?

    <p>Reading of SFBC, EBC, and ISU</p> Signup and view all the answers

    Which component must be verified for proper fitment and tightened if loose?

    <p>ISU handle</p> Signup and view all the answers

    What is the voltage measurement for Socket 3-2 on the B14A1 card?

    <p>24v +/- 1.1v</p> Signup and view all the answers

    Which of the following tasks should be performed on a nine-monthly basis?

    <p>Check Engine magnet pulses</p> Signup and view all the answers

    What is the expected voltage range for Socket 1-2 on the B14A1 card?

    <p>12v +/- 0.3v, 0.6v</p> Signup and view all the answers

    What should be checked to ensure the SPM is functioning properly?

    <p>SPM test &amp; simulation test</p> Signup and view all the answers

    Which component requires checking for intactness to support the Engine magnet?

    <p>Engine magnet foundation beam</p> Signup and view all the answers

    What is required to check regarding the APC receiver?

    <p>Ensure it functions by passing over APC track magnet</p> Signup and view all the answers

    What should be verified concerning a fire extinguisher?

    <p>Seal intactness</p> Signup and view all the answers

    Which of the following requires monthly check-ups according to the maintenance procedures?

    <p>Speed cut off and exhaust magnet valve</p> Signup and view all the answers

    What should be examined to determine if the Wearing Strips of the pantograph are in a serviceable condition?

    <p>Their thickness and sharp edges</p> Signup and view all the answers

    Which inspection task is specifically related to ensuring the proper function of the pantograph's Rocker Assembly?

    <p>Verifying free movement of the assembly</p> Signup and view all the answers

    Which component of the pantograph should be checked for signs of excessive lateral play?

    <p>Lower Frame Assembly</p> Signup and view all the answers

    What condition indicates an abnormality that necessitates replacement of the panto pan?

    <p>Cracks or signs of external hitting</p> Signup and view all the answers

    Which maintenance action ensures that the Bow Plunger operates correctly?

    <p>Checking for free sliding action</p> Signup and view all the answers

    Which of the following items must be visually inspected for potential issues during the trip inspection?

    <p>Presence of oil leakage from transformers</p> Signup and view all the answers

    What should be checked in the driving cab to ensure readiness for operation?

    <p>Operation of indicator LED lights</p> Signup and view all the answers

    During the trip inspection, what should be checked concerning the handrails and overhead handles?

    <p>Secure attachment to the ceiling</p> Signup and view all the answers

    Which task is specifically related to maintaining passenger amenities in an EMU?

    <p>Inspect for missing luggage racks</p> Signup and view all the answers

    What is a critical inspection item related to the electrical systems during a trip inspection?

    <p>Fault event download from CCUs</p> Signup and view all the answers

    Which aspect of passenger safety should be considered concerning the condition of the seating area?

    <p>Integrity of seat frames and cushions</p> Signup and view all the answers

    Which lighting feature should be verified for proper functioning in passenger compartments?

    <p>Functionality of the light and fan operation switches</p> Signup and view all the answers

    What is the primary action to take if the silica gel in the transformer appears grey?

    <p>Heat the silica gel</p> Signup and view all the answers

    During a transformer inspection, what should be checked to ensure the oil is at an acceptable level?

    <p>The oil level mark between low and 300</p> Signup and view all the answers

    Which aspect is critical when checking the traction motor for potential external damage?

    <p>Integrity of the mounting bolts</p> Signup and view all the answers

    What must be done with the traction motor air filters during routine maintenance?

    <p>Clean them using dry compressed air</p> Signup and view all the answers

    What should be verified when inspecting the housing bolts of the suspension tube assembly?

    <p>That they are intact and secure</p> Signup and view all the answers

    What is the purpose of checking the healthiness and spring tension of the ERB during inspection?

    <p>To prevent potential structural failures</p> Signup and view all the answers

    Which condition indicates a need for greasing the NDE bearing of the traction motor?

    <p>Signs of overheating or excessive noise</p> Signup and view all the answers

    When should the transformer cleaning be performed according to the routine maintenance guidelines?

    <p>During routine inspections and service checks</p> Signup and view all the answers

    Which element of the traction motor requires checking for both fitment and tightness?

    <p>The mounting brackets</p> Signup and view all the answers

    In the transformer maintenance checklist, which aspect should be assessed regarding radiator fins?

    <p>The cleanliness of the fins</p> Signup and view all the answers

    What should be done if the battery electrolyte level is found to be low?

    <p>Top up the electrolyte if it is less than the required level.</p> Signup and view all the answers

    When checking the battery's voltage, what should be done after switching off the battery?

    <p>Record the voltage and ensure connections are intact.</p> Signup and view all the answers

    What is a critical aspect of checking the condition of the battery leads?

    <p>They should be properly insulated and clean.</p> Signup and view all the answers

    What is required to ensure the proper working of the DC-DC Converter for the headlight?

    <p>Evaluate its functionality in both normal and standby positions.</p> Signup and view all the answers

    What should be ensured regarding the operation of the coach's lights and fans?

    <p>Their operation must be correct at both 50% and 100% positions.</p> Signup and view all the answers

    What should be checked regarding the headlight focus?

    <p>It should be checked and adjusted if required.</p> Signup and view all the answers

    What is the protocol for cleaning battery connections?

    <p>Apply petroleum jelly on all connections after cleaning.</p> Signup and view all the answers

    What should be done if any defects are noticed in the lights or fans during operational checks?

    <p>Report and attend to the defects immediately.</p> Signup and view all the answers

    During battery maintenance checks, what should be observed regarding the battery box condition?

    <p>The condition must ensure proper fitment.</p> Signup and view all the answers

    What is the necessary action after cleaning the battery box?

    <p>Ensure proper working of trolley and door hinges.</p> Signup and view all the answers

    What is the minimum thickness required for Wearing Strips on the pantograph?

    <p>3 mm</p> Signup and view all the answers

    Which component must ensure no gap is present between the Main and End wearing strips?

    <p>Lower Frame Assembly</p> Signup and view all the answers

    What should be checked to confirm there is no leakage in the Control Box during inspections?

    <p>Air leakage</p> Signup and view all the answers

    Which part of the pantograph should be inspected for excessive lateral play during an assembly check?

    <p>Rocker Assembly</p> Signup and view all the answers

    What must be verified regarding the servo motor during inspections?

    <p>It should have free movement of the piston rod</p> Signup and view all the answers

    Which of the following conditions indicates an abnormality requiring component replacement?

    <p>All of the above</p> Signup and view all the answers

    What is essential to check regarding the flexible shunts in the pantograph?

    <p>They must not have broken strands</p> Signup and view all the answers

    During inspection, what should be verified regarding the horizontal damper?

    <p>Smooth operation and oil leakage</p> Signup and view all the answers

    Study Notes

    Maintenance Schedules for AC-DC EMUs (Siemens)

    • Various maintenance schedules for AC EMUs/MEMUs apply to AC-DC EMU stock in Mumbai.
    • Passenger amenities are to be inspected throughout the maintenance process.

    Types of Schedules and Periodicity for AC, AC-DC EMUs/MEMUs

    • Daily/Night: Trip Inspection (10 days)
    • Monthly: Inspection (180 Days)
    • Six Monthly: Inspection (180 Days)
    • 18 months: Periodic Inspection (POH)

    Cleaning Schedule

    • Wash exteriors and mop interiors during trip inspections.
    • Broom interiors daily at night stabling points.

    Items for Daily Checking at Night Stabling Points

    • Visual inspection of wheels for cracks.
    • Check axle guide springs, air springs, bogie frame, and brake riggings.
    • Check brake blocks.
    • Drain main reservoirs.
    • Check main compressor oil level.

    Trip Inspection Schedule (10 Days) Electrical

    • Check E-Cabinet for switches and MCBs.
    • Download fault events from CCUs and TCUs and analyze.
    • Check operation of lights, fans, and ventilation switches.
    • Check working of signal bell and emergency bell.
    • Check working of flasher, tail, and blinker lights.
    • Check working of head light and auxiliary head lights.
    • Check working of DC-DC converter for head light.
    • Check working of cab light, emergency cab light, spot light, and cab fans.
    • Check for intactness of battery box.
    • Check battery voltage.
    • Check transformer oil level.
    • Check for any hitting/damage signs.
    • Check for intactness of transformer mounting bolts.
    • Check availability of safety slings.
    • Check the color of silica gel.

    Trip Inspection Schedule (10 Days) Carriage

    • Check driving cabs.
    • Check auto-drain valve.
    • Inspect air drier mounting arrangement.
    • Check any air leakage from duplex piston valve.
    • Check if both towers are purging.
    • Check parking brake.
    • Check Schaku couplers.
    • Inspect air suspension.
    • Inspect roof equipment.
    • Clean roof insulators with vim powder and dry cloth.
    • Clean fire extinguisher.
    • Check main air compressor (MAC).
    • Check auxiliary compressor.
    • Check APC magnet.
    • Final testing (MMI in maintenance mode).
    • Check the healthiness of various lamps indication.
    • Test the push button on MMI.
    • Ensure proper functioning of each and every function on various screens. - Ensure there are no error messages.

    Other Relevant Items

    • Passenger amenities and related checks are included throughout the inspection process.
    • Check all roof insulators for cleanliness.
    • Inspect and clean all flashed portions on insulators.
    • Check and record battery voltage.

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    Related Documents

    Maintenance Manual AC DC EMU (Siemens) PDF

    Description

    This quiz tests your knowledge on essential aspects of inspecting transformers and traction motors. You'll cover parameters such as silica gel color, oil levels, and safety checks in passenger areas. Perfect for those involved in maintenance and safety assessments in rail systems.

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