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Cert IV in Train Driving (Metro Trains) > Basic Air And Electrical > Flashcards

Basic Air And Electrical Flashcards

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Drivers Test flashcards
1
Q

What are the 2 types of comeng?

A
  • westcode
  • knorr
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2
Q

What are the 4 types of EMU train?

A
  • comeng
  • siemens
  • x’trapolis
  • HCMT
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3
Q

How do you identify a motor and trailer car?

A
  • motor car = m
  • trailer car = t
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4
Q

How are the doors and wheels numbered on comeng, siemens and x’trapolis?

A

Clockwise

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5
Q

What side of the cab does a driver sit on a comeng?

A

B side

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6
Q

What are the 6 common cab safety equipment?

A
  • first aid kit
  • red and green flags
  • fire extinguisher
  • audible track warning signals (ATWs)
  • emergency track circuit jumper cables
  • switch stick
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7
Q

What are the 2 main things air (pneumatics) is used for on a train?

A
  • braking systems
  • suspension
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8
Q

What do isolating cocks do?

A
  • shut the flow of air on/off
  • divert the flow of air
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9
Q

How is the power drawn from the overhead into the train?

A

Via the pantographs

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10
Q

What 3 ways do EMU trains couple together?

A
  • mechanically
  • electrically
  • pneumatically
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11
Q

How does ED/rheostatic braking work?

A

The traction motors act as generators to apply a retarding force

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12
Q

What are the 2 types of brakes all train types have?

A
  • electro-dynamic (ED)/rheostatic
  • electro-pneumatic (EP)
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13
Q

What is the extra braking system found on comeng’s?

A
  • automatic air brake
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14
Q

What type of brake do trailer cars have?

A
  • EP (friction) only
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15
Q

What type of suspension do the train types have?

A
  • C, S, H = air bag
  • x’trapolis = spring
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16
Q

What are some primary effects of electric shock?

A
  • shock
  • burns
  • unconsciousness
  • respiration stops
  • reduction of blood circulation
  • death
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17
Q

What steps should you take when tending to electric shock victims?

A
  • safety to yourself
  • safety to passengers
  • isolate power
  • tend to victim
18
Q

True or false: the unit of measurement for electrical potential is a Volt.

A

True

19
Q

What is a volt?

A

Unit of measurement for electrical potential. (ie. pressure in hose/pipe)

20
Q

What is Amps (ampere)?

A
  • quantity of current flow. (ie. amount of water in hose/pipe)
21
Q

What is resistance?

A
  • the drag present in an electrical circuit restricting electrical energy from flowing freely
  • (ie. diameter of hose/pipe)
22
Q

What does AC and DC stand for?

A
  • AC = alternating current
  • DC = direct current
23
Q

What happens when a switch is on or off?

A
  • on = circuit is closed/complete
  • off = circuit is open/incomplete
24
Q

What is used to protect a circuit?

A
  • circuit breakers
25
Q

Can a circuit breaker be used as a switch to turn equipment on or off?

A

No

26
Q

When can a tripped circuit breaker be reset?

A
  • until the reason for the fault has been determined
  • if it is safe to do so
27
Q

What does a compressor do?

A

Produce compressed air

28
Q

What do compressor governors do?

A
  • monitors main reservoir pressure
  • turns the comperssors on/off
29
Q

What do reservoirs do?

A

Store compressed air

30
Q

What do safety valves do?

A

Prevents the main reservoir from being overcharged if the compressors fail to stop

31
Q

What do air dryers do?

A

Remove water particles, oil and solid particles from the compressed air

32
Q

What train types have sanders?

A
  • siemens
  • HCMT
33
Q

What train equipment/systems are operated pneumatically?

A
  • friction brakes
  • air suspension
  • sanding equipment
  • whistles
  • raising pantograph
  • opening and closing saloon doors
  • spring park brakes
34
Q

What train types use air to raise the pantographs?

A
  • comeng
  • HCMT
35
Q

How are doors opened and closed on a comeng?

A
  • pneumatically
36
Q

What does a spring park brake do?

A

Stops the train from rolling away

37
Q

How is the SPB applied?

A

Reduction of main reservoir air releases the spring and applies the brake

38
Q

How is the SPB released?

A

An increase in main reservoir air compresses the spring and releases the brake

39
Q

What are train whistles used for?

A
  • warning
  • communication
40
Q

What are the 3 ways a pantograph can be raised on a comeng?

A
  • main reservoir
  • storage reservoir
  • battery operated compressor
41
Q

How are pantographs raised on the siemens and x’trapolis?

A

Electric motor

Cert IV in Train Driving (Metro Trains) (7 decks)

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