Metro ESM 7D Flashcards

(41 cards)

1
Q

From the Metro ESM:

When decellerating from speed, the dynamic braking system ________________ of the voltage applied to the traction motor field windings, causing car to slow down.

A

reverses the polarity

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2
Q

From the Metro ESM:

In the dynamic braking system, excess voltage is sent to the ______________ to be dissipated as ____________

A

resistor grid; thermal heat

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3
Q

From the Metro ESM:

Where are the resistor grids located on Rohr cars?

A

Underside of operators side of rail car, behind the motor control boxes.

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4
Q

From the Metro ESM:

Resistor grids can reach ________ F

A

800 degrees

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5
Q

From the Metro ESM:

The Rohr “AC” traction motors are __________ than their “DC” counterparts found on Breda cars.

A

slightly smaller

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6
Q

From the Metro ESM:

Rohr cars use a ____________________ as the primary suspension system

A

clam shaped rubber suspension

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7
Q

From the Metro ESM:

Which air compressor system reacts slower, Rohr or Breda?

A

Rohr

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8
Q

From the Metro ESM:

Can the Rohr car air bag suspension system be disabled?

A

NO

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9
Q

From the Metro ESM:

The connection between Rohr cars in a married pair is a ______________.

A

semi-permanent draw bar

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10
Q

From the Metro ESM:

Can a Rohr married pair be easily separated in the field?

A

NO

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11
Q

From the Metro ESM:

To remove the side window of a Rohr car, __________ that holds the metal frame in the opening.

A

remove the zip strip gasket

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12
Q

From the Metro ESM:

How many fire extinguishers are located on Rohr cars? Where are they?

A

One; located in operators compartment.

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13
Q

From the Metro ESM:

On Rohr cars, the center sliding doors can be manually opened ________ ways.

A

two (2)

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14
Q

From the Metro ESM:

The easiest way to open the emergency side door of a Rohr car is to use the __________________.

A

passenger emergency evacuation handles.

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15
Q

From the Metro ESM:

The first step of the second method to open the center sliding doors on Rohr cars is to ____________________

A

locate the slotted locking screws for the panels beside the sliding doors.

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16
Q

From the Metro ESM:

How many slotted locking screws are located on the panels beside the center sliding doors on Rohr cars?

A

two (2)

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17
Q

From the Metro ESM:

Once the panel beside the center sliding doors on a Rohr car is removed, what should you locate? What do you do next?

A

red painted lever; pull handle down to release the door and manually push door open.

18
Q

From the Metro ESM:

Where is the emergency evacuation ladder on a Rohr car?

A

Under the first side facing seat next to door #7

19
Q

From the Metro ESM:

What is the emergency evaucation ladder on a Rohr car constructed of?

A

Wood with a hinge in the middle

20
Q

From the Metro ESM:

What are the dimensions of the Rohr car emergency evacuation ladder?

A

When extended, 57 inches in length and 13 inches wide

21
Q

From the Metro ESM:

What are the pins for on a Rohr car emergency evacuation ladder?

A

To attach the ladder to the top of the anti-climber at the front of the rail car.

22
Q

From the Metro ESM:

Rohr cars have _________ seats that the Breda cars.

23
Q

From the Metro ESM:

The handrails on the tops of the seat backs in Rohr cars are __________.

A

smooth polished metal

24
Q

From the Metro ESM:

The handrails on the tops of the seat backs in Breda cars are __________.

A

brown non-slip grip rails

25
# From the Metro ESM: WMATA has modified _________ of _______ cars to be used as revenue retrieval trains.
two married pairs; Rohr
26
# From the Metro ESM: What has been modified on the revenue retrieval trains?
Seats in one car of married pair have been removed, replaced with brackets to hold money carts?
27
# From the Metro ESM: What are the hours that revenue retrieval trains will run?
Revenue trains will run during regular hours and during non-revenue hours 0100 - 05:30.
28
# From the Metro ESM: Who works on the Metro revenue retrieval trains?
Transit Police along with revenue personnel.
29
# From the Metro ESM: How many Breda cars with the cam-controller were ordered initially, and what series were they numbered?
76 cars; 2000
30
# From the Metro ESM: How many Breda cars with the chopper controller were ordered initially, and what series were they numbered?
18 cars; 3000
31
# From the Metro ESM: The first revenue runs for the Breda 2000 series rail cars did not occur until _________
December 1983.
32
# From the Metro ESM: Cam controllers vary the current flow to the traction through a series of mechanical _________ switches controlled by cams.
"make and break"
33
# From the Metro ESM: Which rail car system requires more maintenance, chopper controllers or cam controllers?
Cam controllers, many working parts.
34
# From the Metro ESM: Do Breda 2000 rail cars have capacitors to store 3rd rail power?
No. 
35
# From the Metro ESM: What color are the motor controller boxes on Breda cars and are they marked?
Gray/brown; no they are not marked.
36
# From the Metro ESM: Do Breda 2000 rail cars have a resistor grid?
Yes, extensive.
37
# From the Metro ESM: Where are the resistor grivds located on Breda 2000 rail cars?
Along the underside of the operators side of car, flush with the side of car.
38
# From the Metro ESM: Where is the battery compartment located on Breda 2000 cars?
Underside of the "B" car on the opposite side of the car from operators compartment
39
# From the Metro ESM: To access the battery compartment on a Breda rail car you have to remove a ____________
locking bar on the outside of the battery box.
40
# From the Metro ESM: How many bolts must be removed to access the batteries on a Breda rail car.
Three (3).
41
# From the Metro ESM: On a Breda rail car, can the batteries be accessed if the battery box is on the same side as the 3rd rail?
No, there is not enough clearance.  You will strike the top of 3rd rail cover.