Metro (questions & answers) graded
A+ already passed
What is a short section of third rail found just beyond some station platforms used to ensure
uniform train acceleration? - correct answer ✔✔ Accelerator rail (kicker rail)
These rooms are found in all Metro stations, they receive electricity from the utility company
and distribute it for station and rail roadway use. - correct answer ✔✔ AC switchboard room
How often are chain marker signs displayed? - correct answer ✔✔ 100 feet
What does a chain marker sign denote? - correct answer ✔✔ Distanced in feet form the hub
How many collector shoes (paddles) are there per rail car? - correct answer ✔✔ 4
What is it called when a train uses kinetic energy from train movement generating current at
the traction motors and it is then dissipated by the resistor grids? - correct answer ✔✔ Dynamic
braking
Under what seats are the emergency evacuation kits located in every car? - correct answer ✔✔
Right, rear, double sided seat
What is the max distance to an emergency exit? - correct answer ✔✔ 1,250
Blue light stations are located approximately how far from each other along the rail roadway
and from the station? - correct answer ✔✔ 800'
, What is a device that converts battery power to AC energy? - correct answer ✔✔ inverter
What is the process called when moving a rail car away from the platform to free a trapped
victim? - correct answer ✔✔ lateral jacking
Which series metrorail cars is, at a minimum, a four-car consist? - correct answer ✔✔ 7000
What is the acronym for a battery-operated vehicle used for rail transportation of emergency
response or WMATA personnel and equipment? - correct answer ✔✔ MERV (mobile emergency
response vehicle)
What is the name for the terminus for automatic train control information, trouble alarms, and
radio transmissions? - correct answer ✔✔ Rail Operations Control Center (ROCC)
What is the procedure called of removing third rail power by physically disengaging large circuit
breakers in Traction Power Substations and/or Tie Breaker stations? - correct answer ✔✔ Red
Tag Third Rail Power Removal
What is the name of steel rail that has been manufactured or welded in lengths of up to one
half mile or more which has a tendency to recoil to its designed position if broken? - correct
answer ✔✔ Ribbon rail
Approximately how many volts are in the third rail used to power the trains? - correct answer
✔✔ 750 volts DC
How many metro stations are there in Northern Virginia? - correct answer ✔✔ 25 Stations
Which Metro line shares a common corridor with the CSXT Railroad? - correct answer ✔✔ Blue
line
A+ already passed
What is a short section of third rail found just beyond some station platforms used to ensure
uniform train acceleration? - correct answer ✔✔ Accelerator rail (kicker rail)
These rooms are found in all Metro stations, they receive electricity from the utility company
and distribute it for station and rail roadway use. - correct answer ✔✔ AC switchboard room
How often are chain marker signs displayed? - correct answer ✔✔ 100 feet
What does a chain marker sign denote? - correct answer ✔✔ Distanced in feet form the hub
How many collector shoes (paddles) are there per rail car? - correct answer ✔✔ 4
What is it called when a train uses kinetic energy from train movement generating current at
the traction motors and it is then dissipated by the resistor grids? - correct answer ✔✔ Dynamic
braking
Under what seats are the emergency evacuation kits located in every car? - correct answer ✔✔
Right, rear, double sided seat
What is the max distance to an emergency exit? - correct answer ✔✔ 1,250
Blue light stations are located approximately how far from each other along the rail roadway
and from the station? - correct answer ✔✔ 800'
, What is a device that converts battery power to AC energy? - correct answer ✔✔ inverter
What is the process called when moving a rail car away from the platform to free a trapped
victim? - correct answer ✔✔ lateral jacking
Which series metrorail cars is, at a minimum, a four-car consist? - correct answer ✔✔ 7000
What is the acronym for a battery-operated vehicle used for rail transportation of emergency
response or WMATA personnel and equipment? - correct answer ✔✔ MERV (mobile emergency
response vehicle)
What is the name for the terminus for automatic train control information, trouble alarms, and
radio transmissions? - correct answer ✔✔ Rail Operations Control Center (ROCC)
What is the procedure called of removing third rail power by physically disengaging large circuit
breakers in Traction Power Substations and/or Tie Breaker stations? - correct answer ✔✔ Red
Tag Third Rail Power Removal
What is the name of steel rail that has been manufactured or welded in lengths of up to one
half mile or more which has a tendency to recoil to its designed position if broken? - correct
answer ✔✔ Ribbon rail
Approximately how many volts are in the third rail used to power the trains? - correct answer
✔✔ 750 volts DC
How many metro stations are there in Northern Virginia? - correct answer ✔✔ 25 Stations
Which Metro line shares a common corridor with the CSXT Railroad? - correct answer ✔✔ Blue
line
