Metro ESM 07C

Question 1

From the Metro ESM:

Dynamic braking is basically the __________ of the polarity applied to traction motor field windings.

Answer 1

reversing

Question 2

From the Metro ESM:

Dynamic brakes are designed to be used when car speed is _____________

Answer 2

above 15 mph

Question 3

From the Metro ESM:

The coils that make up the resistor grid may reach ______ degrees F or more.

Answer 3

800

Question 4

From the Metro ESM:

The resistor grid coils are made from a _____________ material, edge wound to form a __________.

Answer 4

steel alloy resistance; helix

Question 5

From the Metro ESM:

A resistor grid coil is approximately _________ long.

Answer 5

twenty inches

Question 6

From the Metro ESM:

The auxilliary system includes a converter which is found on ____________ cars

Answer 6

Breda 2000, 3000, & 4000 series

Question 7

From the Metro ESM:

The auxilliary system includes a motor generator which is found on _____________ cars.

Answer 7

Rohr 1000 & 8000 series.

Question 8

From the Metro ESM:

Where are rail car converters and motor generators found?

Answer 8

Under the floor of the “B” car in a married pair.

Question 9

From the Metro ESM:

How many volts do converters / motor generators supply?

Answer 9

37.5 volts

Question 10

From the Metro ESM:

How many air conditioning system compressor-condensors are on each rail car?

Answer 10

two

Question 11

From the Metro ESM:

Where are the air conditioning system compressor-condensors located?

Answer 11

One is behind the front truck, one is forward of rear truck

Question 12

From the Metro ESM:

What refrigerant is used on Metro rail cars, and how much?

Answer 12

Freon 22; 12 pints.

Question 13

From the Metro ESM:

Refrigerant on Metro cars decomposes to form ___________ when exposed to flame.

Answer 13

phosgene gas

Question 14

From the Metro ESM:

In the presence of moisture, ___________ decomposes into ___________ and _____________.

Answer 14

phosgene gas; hydrochloric acid; carbon monoxide.

Question 15

From the Metro ESM:

In rail cars, the heating and air conditioning equipment are powered by ____________ which is __________ volts.

Answer 15

3rd rail power; 750

Question 16

From the Metro ESM:

The batteries in all Metro rail cars are connected in ______________

Answer 16

parallel.

Question 17

From the Metro ESM:

The rail car battery system will power emergency lighting, communications equipment, running lights, and electric doors for how long?

Answer 17

two hours

Question 18

From the Metro ESM:

The rail car battery unit is a nominal ________, _________ ampere hour nickel cadmium alkaline storage battery.

Answer 18

32; 240

Question 19

From the Metro ESM:

How many battery units does each married pair of rail cars have?

Answer 19

one

Question 20

From the Metro ESM:

What very caustic base and eletrolyte is contained in the batteries of Metro rail cars?

Answer 20

potassium hydroxide

Question 21

From the Metro ESM:

Batteries can be found inside the _______ cars of all Rohr cars.

Answer 21

“B”

Question 22

From the Metro ESM:

Batteries in Rohr cars are located where?

Answer 22

Under the last pair of back to back double seats, on side opposite operators position

Question 23

From the Metro ESM:

What is different about the location of Breda car batteries from Rohr car batteries?

Answer 23

Breda car batteries are under the floor

Question 24

From the Metro ESM:

How many bolts must be removed to access the batteries in Breda cars?

Answer 24

three

Question 25

# From the Metro ESM: A rail car battery unit consists of ______ individual steel cells assembled in _____ cell wooden crates

Answer 25

25; 5

Question 26

# From the Metro ESM: The voltage used for the trainlines is __________

Answer 26

37.5 volts DC

Question 27

# From the Metro ESM: Is 3rd rail power transmitted from car to car?

Answer 27

NO

Question 28

# From the Metro ESM: Where are trainlines located on Metro rail cars?

Answer 28

Under floor of rail car, along the side

Question 29

# From the Metro ESM: What carries signals from the operators cab to all cars in the train? 

Answer 29

Trainline

Question 30

# From the Metro ESM: A rail car coupler can move up to ______ vertically in either direction from the level position, and laterally up to _________ in each direction from center.

Answer 30

4 inches; 21.5 degrees

Question 31

# From the Metro ESM: Each electrical coupler contains _____ individual spring loaded, silver faced contacts.

Answer 31

86

Question 32

# From the Metro ESM: The anti-climber is located above the coupler on the _________ end of each rail car pair.

Answer 32

operators compartment

Question 33

# From the Metro ESM: The anti-climber prevents rail cars from ________

Answer 33

telescoping

Question 34

# From the Metro ESM: When compressive forces exceed __________ pounds, an "emergency release mechanism" incorporated into the draft gear assembly shears, allowing the two cars to come together.

Answer 34

125000

Question 35

# From the Metro ESM: Rohr cars are _____ and ______ series

Answer 35

1000; 8000

Question 36

# From the Metro ESM: The original order of Rohr cars totaled ______ cars / _______ married pairs

Answer 36

300 cars; 150 married pairs.

Question 37

# From the Metro ESM: Delivery of Rohr cars began in _________

Answer 37

November 1974

Question 38

# From the Metro ESM: First revenue runs of Rohr cars was in _______

Answer 38

March 1976

Question 39

# From the Metro ESM: The original Rohr cars utilized ______ power through ___________ to provide electrical power to the traction motors.

Answer 39

"DC"; cam-controllers

Question 40

# From the Metro ESM: When were Rohr cars retrofitted with "AC" equipment and traction motors?

Answer 40

Mid 1990's

Question 41

# From the Metro ESM: The third rail is ____ power.

Answer 41

"DC"

Question 42

# From the Metro ESM: What on a rail car converts "DC" power to "AC" power? 

Answer 42

motor control box

Question 43

# From the Metro ESM: After conversion to "AC" power, the current is sent through the _____________ which vary the current flow to the traction motors.

Answer 43

chopper controllers

Question 44

# From the Metro ESM: In the Metro system, the ___________ is the ground for the electrical system.

Answer 44

running rail

Question 45

# From the Metro ESM: The motor control boxes are located on ______________________.

Answer 45

the underside of rail car, same side as operators compartment

Question 46

# From the Metro ESM: Rohr cars have ______ motor control boxes.

Answer 46

three (3)

Question 47

# From the Metro ESM: The ______ and _______ motor control boxes contain the solid state electronics.

Answer 47

first; third

Question 48

# From the Metro ESM: On Rohr cars, where is the filter capacitor discharge switch located?

Answer 48

The center motor control box

Question 49

# From the Metro ESM: Name three (3) things the 1st and 3rd motor control box contain:

Answer 49

1.  Solid state electronics  2.  Capacitors  3. Inverters

Question 50

# From the Metro ESM: In the left upper corner of the center motor controller box on a Rohr car, you will find __________ and the __________

Answer 50

three (3) circular lights; the filter capacitor discharge switch.

Question 51

# From the Metro ESM: How many spring clips hold the door cover closed on the center motor control box?

Answer 51

Three (3)

Question 52

# From the Metro ESM: On a Rohr car, if any lights are illuminated in the center motor control box, this means ______________ is present.

Answer 52

third rail power

Question 53

# From the Metro ESM: If 3rd rail power is confirmed down, the three lights in the motor control box should _____________

Answer 53

go out.

Question 54

# From the Metro ESM: Pressing the filter capacitor discharge switch discharges power to __________________.

Answer 54

negative side of traction power system / running rails.