Chapter 9 - Railcar Extrication Flashcards
The most common type of locomotives are:
Diesel only
Diesel/Electric
Electric Only
Steam
Diesel/Electric locomotives can weigh from ___ tons up to _______ tons, develop as much as _____ horsepower, and carry between ____ to _____ gallons of diesel fuel inside or under the locomotive. Locomotives have a top speed of up to ___ mph.
130 up to 175,000 tons
4,250 horsepower
1,800 to 2,200 gallons
125 mph
Electric Locomotives operate with a power from ______ volt AC to ______ volt AC catenary system of wires suspended about the tracks.
12,000
25,000
The third rail carries ___ volts DC and must be avoided by all but trained Amtrak personnel.
600
Depending on the layout of the locomotive passenger cars, they can seat anywhere from ___ to ___ passengers
44 to 85
All Amtrak cars are equipped with ___-volt electrical circuits charges by power from the locomotive, commonly called “_______”.
480-volt
Head-End Power
Most Amtrak cars have exterior skins made of ____-inch stainless steel.
3/32-inch
Only trained Amtrak crew members can safely perform the following actions:
> De-Energize head-end power > Lower locomotive pantographs > Disengage third-rail shoes > Ground electrical equipment when required > Remove or install power cables
Locomotive walls are made from ___ thick steel, the roof is made from ___ inch steel.
3/8 inch
1/8 inch
The pantograph mounted on top of the locomotive maintains contact with the trolley wires to conduct ______ volts to ______ volts AC, ___ Hz, to the locomotive motors.
12,000 to 25,000 volts AC
25 Hz
Caternary poles are ___-inch square steel H-sections weighing ___ pounds per foot. They range from ___ to ____ feet.
14-inch
84 lbs
70 to 170 feet
All wires and hardware of the caternary system are energized to ______ volts
12,000 volts
Do not permit any metallic object within __ feet or the ______ volt caternary system or the _____ volt signal power lines.
3 feet
12,000 volt
6,900 volt
Do not permit and metallic object with __ feet of the _______ volt transmission lines.
8 ft
138,000 volt
Third-rail electrical-power distribution systems generally distribute ___-volt DC current.
600-volt
Diesel/Electric locomotives can carry up to _____ gallons of diesel fuel in tanks located inside the locomotive or underneath it.
2,200 gallons.
to shut off the fuel supply to the engine, push and hold the emergency fuel shutoff for __ to ___ seconds. The engine will stop running within about ____ minute.
8 to 10 seconds.
one minute
Unless affected by slope or similar environmental influences, a railcar on its side is ________.
Very Stable
Because a railcar is top heavy when resting on its roof, this position can be ________.
Very unstable
Because the majority of the weight of most railcars is concentrated in the lower third of their structure, railcars that are upright and still on their tracks are ________.
Relatively stable.
_______ is a polycarbonate plastic ____ times stronger than glass and ___ times stronger than Plexiglas
Lexan
250 times
30 times
