Rolling Stock Introduction and Functions
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Questions and Answers

What is the primary function of rolling stock in a railway system?

  • To improve train speed
  • To transport passengers and goods safely (correct)
  • To generate power for the trains
  • To support railway infrastructure

    • Which of the following accurately describes rolling stock?

  • It refers only to powered vehicles
  • It includes both powered and unpowered vehicles (correct)
  • It only applies to passenger trains
  • It is specific to freight cars only

    • What is one of the essential capabilities of rolling stocks?

  • To maintain railway tracks
  • To operate independently of railways
  • To ferry or contain passengers and/or goods (correct)
  • To construct new rail lines

    • Which of the following statements about rolling stock is true?

    <p>Rolling stock must protect passengers and/or goods</p> Signup and view all the answers

    What is NOT a characteristic of rolling stock?

    <p>They can operate on highways</p> Signup and view all the answers

    What key aspect defines rolling stock within the railway industry?

    <p>The fact that they have rail wheels</p> Signup and view all the answers

    In terms of rolling stock, which element is crucial for safety?

    <p>Protecting the transported items</p> Signup and view all the answers

    Which statement best reflects the importance of rolling stock?

    <p>Rolling stock is one of the most important components of a railway system</p> Signup and view all the answers

    What defines a Motorized Car with Driver’s Cab in the context of rolling stock?

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

    Which class corresponds to the 2nd generation of the MRT Line-3 System?

    <p>Class 3100</p> Signup and view all the answers

    In the classification system, what does 'B' denote in the car section?

    <p>Car Section</p> Signup and view all the answers

    What feature differentiates the Class 3000 from other classes in the rolling stock categories?

    <p>It contains sections with Driver’s Control</p> Signup and view all the answers

    What does 'blending of brakes' refer to in railways?

    <p>The coordinated use of different types of braking systems</p> Signup and view all the answers

    Which of the following is not a recognized component of the rolling stock classification?

    <p>Trailer Axles (Motorized Bogie)</p> Signup and view all the answers

    Which braking systems are mentioned to be combined for optimal braking performance?

    <p>Regenerative and pneumatic brakes</p> Signup and view all the answers

    What is the significance of neutral axles in rolling stock engineering?

    <p>They do not drive the wheels.</p> Signup and view all the answers

    Which class of rolling stock would be classified as Class 1100?

    <p>No specific generation classification</p> Signup and view all the answers

    What is indicated by 'insufficient regenerative brake' in braking systems?

    <p>Inadequate braking force from regenerative braking alone</p> Signup and view all the answers

    What types of vehicles are described in the context of control in braking systems?

    <p>Motor vehicles and trailer vehicles</p> Signup and view all the answers

    What does 'MC' commonly signify in rolling stock classification?

    <p>Motorized Car with Driver’s Cab</p> Signup and view all the answers

    What function does the Train Control Management System serve?

    <p>Managing various train operations including braking</p> Signup and view all the answers

    In terms of train dynamics, which class is likely to display advanced features for driver interaction?

    <p>Class 3100</p> Signup and view all the answers

    What is the role of drive axles in a motorized bogie?

    <p>Drive the train forward</p> Signup and view all the answers

    Which condition is associated with Wheel Slip and Wheel Slide Protection (WSP)?

    <p>Control of wheel rotation to prevent slippage</p> Signup and view all the answers

    What is the implied risk when regenerative brakes are insufficient?

    <p>Potential for higher stopping distances</p> Signup and view all the answers

    In the context of rail systems, what does the term 'Motor Axle' refer to?

    <p>An axle responsible for propulsion</p> Signup and view all the answers

    What is a primary function of the door system in rolling stock?

    <p>Facilitating passenger entry and exit</p> Signup and view all the answers

    What type of brake system does 'Full Dynamic/Regenerative Brake' belong to?

    <p>Hybrid braking system</p> Signup and view all the answers

    Signup and view all the answers

    Study Notes

    Rolling Stock Introduction

    • Rolling stock is any wheeled vehicle that runs on rails.
    • It's a crucial component of a railway system.
    • It transports passengers and goods safely.
    • A generic term for anything on rail wheels, powered or unpowered.

    Rolling Stock Functions

    • Ferry: Able to carry passengers and/or cargo.
    • Protect: Passengers and cargo must be protected.
    • Drive: The vehicle must accelerate and overcome aerodynamic friction, rolling resistance, and gradient resistance.
    • Brake: The vehicle must be able to brake and stop on downward slopes.
    • Sense: Receive information from Balise, ATP, and Trip-Clock.
    • Actuate: Operate axle counters and track circuits.

    Rolling Stock Types

    • Passenger Transport: EMU (Electric Multiple Units), DMU (Diesel Multiple Units), coaches, carriages, or passenger cars.
    • Freight Transport: Freight cars or wagons
    • Other Types: Bullet trains, Maglev trains, Automated Guideway Transit (AGT), Monorail Train.

    Existing Rolling Stocks

    • LRT Line-1 System:

      • 1st Generation (1984 Class 1000): High-floor Light Rail Vehicle (LRV) that first entered service in 1984.
      • 2nd Generation (1999 Class 1100): Manufactured by a South Korean company, Hyundai Precision and Adtranz, utilizing AC traction motors.
      • 3rd Generation (2007 Class 1200): Over 48 vehicles built by Japanese manufacturers, Kinki Sharyo and Nippon Sharyo.
      • 4th Generation (2023 Class 13000): Included in the South Extension of the line. First LRV in the system with 5 digits.

    • LRT Line-2 System (2003 Class 2000): Electric multiple unit, operated in Manila, manufactured by Hyundai Rotem.

    • MRT Line-3 System:

      • 1st Generation (1999 Class 3000): 73 light rail vehicles (LRV) from Czech Republic by CKD Tatra, three-car configuration with a capacity of 1,182 passengers.
      • 2nd Generation (2016 Class 3100): Manufactured in China by CNR Dalian (now CRRC Dalian).

    Train Dynamics

    • Train Resistance: Forces opposing train motion.
    • Causes of Resistance: Rail-wheel friction, track condition (dips, ups, curves), air/wind resistance, internal resistance from moving parts, inclines, and curves.
    • Types of Resistance:
      • Starting Resistance: The initial force to overcome inertia, low temperature of the bearing, and tightening of the couplers. Formula: Rs = rs * w * n.
      • Running Resistance: Resistance during normal operation on a straight and flat surface. Formula: Rr = A + BV + CV².
      • Gradient Resistance: Resistance due to the gravitational pull of the earth when running uphill or downhill. Formula: Rg = W sin θ = 9.8 Wi.
      • Curve Resistance: Frictional drag between wheels and rails when running on curves. Formula: Rc = 600/r x 9.8 = 5880/r.
    • Equivalent Gradient: The combined effect of curve and gradient resistance. Formula: rcg = rc ± rg = 9.8i'

    Brake System

    • Importance: Stopping a moving train is crucial, and good brakes are essential.

    • Early Brakes: Simple hand brakes used in early rail travel.

    • Air Brake System: The standard fail-safe system. Compressed air operates brakes.

    • Automatic Air Brake: Compressed air is supplied from a main reservoir to auxiliary reservoirs on each car.

    • Straight Air Brake: Performs poorly on longer trains due to uneven application/release of brakes on different cars.

    • Types of Brakes:

      • Service Brake: Used for regular deceleration/stopping.
      • Emergency Brake: Used for instantaneous maximum braking force.
      • Parking Brake: Used to hold the train in stationary position.

    • Electric Braking:

      • Rheostatic Braking: Generated electricity is fed into resistors causing it to dissipate as heat.
      • Regenerative Braking: Generated electricity is fed back into the power supply distribution system.

    • Mechanical Brakes: Wheel-tread brake system, axle-mounted disc brake system.

    • Pneumatic Braking: Air compressor, Main Air Reservoir, Brake cylinder, Brake Pads or Brake Shoes, etc.

    Driver's Cabin

    • Purpose: A central location for controls, instruments, and equipment for safe and efficient train operation.
    • Master Controller: Used to control train speed, acceleration, deceleration, and braking.
    • Dead-Man's Device and Vigilance Device: Essential safety devices that require continual pressure on a switch or pedal and maintain traction.
    • Front Display Panel: Visual display of essential train information, conditions, and operational instructions.

    Hostler Control

    • Designated for personnel (hostler ) who move and place rolling stock in storage yards.
    • Typically located at the rear of the vehicle, containing controls for movement, braking, and doors.

    Conductor's Control

    • Controls for operating train doors, and emergency braking.

    Door System

    • Importance: Essential for boarding and alighting passengers, preventing accidents from open doors during operation.

    • Slam Door: Earliest door technology.

    • Folding Door: Opens by bending outward.

    • Plug Door: Slides perpendicular to the car body when opening/closing.

    • Outside Hanging Sliding Door: Simpler and easier to maintain than others.

    • Basic Components:

    • Door Leaves/Panels

    • Control Units

    • Audio-Visual Indicators

    • Obstruction Detection Device

    • Door Seals

    • Emergency Release Mechanism

    • Door Drives

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    Related Documents

    Rolling Stock Introduction PDF

    Description

    This quiz covers the essential concepts of rolling stock, including its definition, functions, and types. Understand various vehicles used in railway systems, their roles, and operational requirements for safe transport. Test your knowledge on passenger and freight transport solutions.

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