Tro-3 Electric Operating Instructions Definitions

71 Questions | Total Attempts: 22

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Tro-3 Electric Operating Instructions  Definitions

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Questions and Answers
  • 1. 
    [Blank]- A luminous and potentially destructive flash or flame in or about the wires,third rail, or electric apparatus caused by the passage of electric current through the air
  • 2. 
    [Blank]- a hazardous electrical energy discharge. the resulting effects can include explosion, fire, sound and pressure waves, and super heated gasses that can cause serious harm to equipment and people
  • 3. 
    [Blank]- a mechanical connection made to establish electrical continuity and conductivity between two points using a low impedance path
  • 4. 
    [Blank]- a high voltage cable or connection used to transmit high voltage power for propulsion from one unit of electric equipment to another 
  • 5. 
    [Blank]- insulated conductor(s) , used for the transmission of electric power 
  • 6. 
    [Blank]- a system of wires suspended between poles and bridges supporting overhead contact wires and feeders. 
  • 7. 
    [Blank]- a stranded cable attached to supporting structures from which the auxiliary and contact wires are attached 
  • 8. 
    [Blank]- a wire suspended from the main messenger by hangers to which the contact wire is attached to increase ampacity. 
  • 9. 
    [Blank]- the overhead wire from which the pantograph collects current 
  • 10. 
    [Blank]- a conductor , or a system of conductors through which an electric current is intended to flow to and from its source 
  • 11. 
    [Blank]- a low voltage multi-circuit cable or jumper used between engines , cars, and multiple units (MU) to transmit control
  • 12. 
    [Blank]- the flow of electrons (electricity) through a conductor, typically measured in amperes 
  • 13. 
    [Blank]- a de-energized and grounded section of the catenary system 
  • 14. 
    [Blank]- isolated from all sources of electrical potential . it is considered energized until tested and grounded 
  • 15. 
    [Blank]- it is produced at a generating station, power plant, or alternate energy source. it is transmitted at high voltage by means of transmission lines to substations where it is distributed at lower voltages to the overhead catenary system , signal power lines, and distribution circuits/facilities 
  • 16. 
    [Blank]- used herein, refers to locomotives , dual mode , and multiple unit cars operated by power received from an overhead catenary system or third rail 
  • 17. 
    [Blank]- a train that is powered by an overhead catenary system , third rail, or dual-mode engine that doesn't have its pantograph locked down 
  • 18. 
    [Blank]- that portion of the railroad equipped for electric train operation by an overhead catenary system or third rail 
  • 19. 
    [Blank]- electrically connected to a source of potential. (LIVE and Dangerous to life)
  • 20. 
    [Blank]- a single-use overcurrent protective device designed to open and isolate a circuit when exposed to current above and beyond its normal operating condition 
  • 21. 
    [Blank]- a conductive connection, whether intentional or accidental, between an electrical circuit or equipment and the earth, or to some conducting body that serves in place of the earth 
  • 22. 
    [Blank]- a mechanical device located on top of electric train equipment that performs two functions: 1. it grounds the pantograph to the body of the equipment  2. it closes a mechanical hook over the pantograph to prevent it from rising 
  • 23. 
    [Blank]- a device which separates signal track circuits from traction return circuits by providing a path for traction return current around insulated block joints and back to the substations 
  • 24. 
    [Blank]- a joint in the rail which electrical insulation is installed between adjoining rails
  • 25. 
    [Blank]- the closest distance an employee is permitted to approach an energized circuit or equipment 
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