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9 Questions

2 Views

capítol A 3 - Electrificació

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Questions and Answers

Com s'alimenten els trens que utilitzen energia elèctrica?

A través de fonts d'energia renovable

A través de fonts d'energia nuclear

A través de combustible fòssil

A través de fonts d'energia externes com l'electricitat (correct)

Què és el sistema catenari?

Un sistema per alimentar els trens amb combustible

Un sistema de comunicació entre trens

Un sistema per subministrar electricitat als trens a través d'un fil de contacte i un fil de suport (correct)

Un sistema de frens per als trens

Com és la secció del fil de contacte?

Plana

Quadrada

Circular amb ranures per a les grapes de pèndol que el subjecten (correct)

Triangular

Què és el fil de suport?

Un fil que està subjecte per màstils que també subjecten el fil de contacte Signup and view all the answers

Què és el fil d'alimentació?

Un fil que porta electricitat des de les subestacions fins al fil de contacte Signup and view all the answers

Per què es divideix el sistema catenari en seccions?

Per facilitar les reparacions i manteniment Signup and view all the answers

Com es compensa la sagging del fil de contacte a causa dels canvis de temperatura?

A través d'un sistema de compensació mecànic Signup and view all the answers

Què fan les subestacions en el sistema catenari?

Transformen l'electricitat de corrent altern corrent continu Signup and view all the answers

Què fan els centres de control en el sistema catenari?

Poden aïllar seccions del sistema catenari de forma independent Signup and view all the answers

Study Notes

Trains need energy to move and some use external sources like electricity.
Catenary system is used to supply electricity to trains through a contact wire and a supporting wire.
The contact wire has a circular section with grooves for the pendulum grapes that hold it.
The supporting wire is smaller and is held by masts that also support the contact wire.
Feeder wire carries electricity from substations to the contact wire and is supported by the same masts.
Catenary is divided into sections that can be isolated for maintenance purposes.
Catenary has a mechanical compensation system to avoid wire sagging due to temperature changes.
Substations transform high voltage AC to constant voltage DC for the catenary.
Substations have remote control centers that operate switches and protection devices.
Control centers can isolate catenary sections independently.

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Description

Test your knowledge of trains and their energy sources with this quiz! Learn about the catenary system that supplies electricity to trains, including the contact wire, supporting wire, and feeder wire. Discover how the catenary system is divided into sections for maintenance and has a compensation system to avoid wire sagging. Explore the role of substations in transforming high voltage AC to constant voltage DC for the catenary and the importance of remote control centers. Put your skills to the test and see how much you really know