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WorksheetsRSM Brake and Propulsion System
Total questions: 11
Worksheet time: 6mins
It is the general term for devices that provide BRAKING ACTION to decelerate and stop a running train, balance acceleration of a train on the down gradient, and prevent a standing (standstill) train from rolling.
Propulsion Equipment
Anti Wheel Slip/Slide Equipment
Brake Equipment
Air-Conditioning Equipment
[ELECTRIC BRAKE]
In this kind of electric brake (electro-dynamic brake), the traction motors act as generators converting kinetic energy into electrical energy. The converted electrical energy is then fed back into the overhead contact line (when receptive) for other trains to use.
(a)
[ELECTRIC BRAKE]
In this kind of electric brake (electro-dynamic brake), the traction motors act as generators turning kinetic energy into electrical energy. The created electrical energy is then consumed by the on-board resistors (if the catenary is not receptive), turned into heat ang get dissipated in the air.
(a)
[AIR BRAKE SYSTEM COMPONENT]
It is an air storage tank used to hold compressed air. It holds enough air to allow the brakes to be used several times, even if the compressor stops working. If brakes are activated all at once, there will be shortage of compressed air to store.
Brake Cylinder
Main Air Reservoir
Auxiliary Reservoir
Brake Pads
In pneumatic braking, this component will provide the necessary compressed air to actuate the brake cylinder during braking.
Main Reservoir
Auxiliary Air Tank
Control Valve
[BRAKE PADS OR SHOES]
This type of brake pad/shoe has the shortest service life, it has low wear resistance and is replaced more frequently.
Composite (Resin) Type
Sintered Alloy Type
Cast Iron Type
[RAILWAY ELECTRIFICATION]
There are two (2) types of current supplied to trains and electric locomotives. One is the Direct Current (DC) which may seem to be better, but unable to transmit electricity over long distances.
It can only provide power up to about ___ kilometers length for one direction. Many ground equipment is required, but train equipment will be small. Suitable for routes with a large number of trains.
1
2
3
4
[CONTACT LINE SYSTEM]
A catenary system is a system of overhead wires used to supply electricity to a locomotive, tram (streetcar) or light rail vehicle that is equipped with a pantograph.
Catenary consist of the following main elements:
-Overhead Wire
-Pantograph
-Contact Wire
-Messenger Wire
-Dropper
-Contact Wire
-Messenger Wire
-Insulator
-Contact Wire
-Messenger Wire
-Transformer
-Contact Wire
The MERALCO supplies (a) kV of electricity to LRT 1, LRT 2, MRT 3, and PNR.
[Types of AC Motors]
There are two types of AC motors depending on the type of material of the rotor: Synchronous motor and Induction motor. Induction motor can be classified further into two. This type of induction motor is widely used by rolling stocks nowadays.
(a)
[Classification of Brakes]
A Train of ABC Company is approaching a station at 80kph. Their rolling stock is equipped with Electro-Dynamic Brake, Electro-Pneumatic Brake, and Electro-Magnetic Brake.
The train operator noticed an obstruction on the tracks which prompted him to initiate to the emergency brakes.
Which of the brakes will work as emergency brake application?
Electro-Magnetic Brakes
Electro-Magnetic and
Electro-Pneumatic Brakes
Electro-Magnetic and
Electro-Dynamic Brakes
ALL Brakes Available.
