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Trolleys (the US term) or trams are powered by electricity, which can come from many sources - nonrenewable sources like coal, oil, or nuclear plants, or renewable sources like wind or water-power generation.
In most cases the vehicles receive their power from overhead wires. Older systems use a spring-loaded pole equipped with a slider or wheel that moves along the wire, while newer systems use pantograph pickups that are easier to maintain and more reliable. A few systems have the power line buried in a conduit placed between the rails; a rod called a "plow" projects into the conduit and makes contact with the power line analogous to the way a pole or pantograph contacts the overhead wire on a standard tram. The tram rails serve as the other conductor so only one power line is needed.
Trams that run on city streets are also called streetcars.
Trackless Trolleys
About 300 cities around the world operate tram-like vehicles that run on rubber tires like buses. These are variously called trolleybuses, trolley coaches, trackless trolleys, or trackless trams. Because they don't have rails to complete the circuit, trackless trolleys have two overhead wires instead of one; one wire supplies power while the other completes the circuit. Trackless trolleys have the advantages of running on electricity rather than petroleum while being able to maneuver around obstacles such as parked cars. However the need for two overhead wires creates a lot of complexity, especially at crossings and turnouts, and increases the likelihood that a vehicle will become dewired.
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Use the word trolley in a sentence?
The trolley took the people sight-seeing.
What kind of force do you use to move a trolley?
You can move a trolley with a magnetic force (e.g. use magnets to draw the trolley away from it's original position - assuming it is made of a magnetic material), a gravitional force (e.g. rolling the trolley down a ramp) or with an applied force (e.g. pushing the trolley).
How do you dismantle trolley?
It depends on the type of trolley and also on the use the dis-assembled parts are to be put to.
What is an example of a sentence with the word trolley?
My mother pushes the trolley whenever we visit the supermarket. or I always ask my mum if I can sit in the trolley when we are in the supermarket. or We are not allowed to take the trolleys on the escalators.
Is trolley a proper noun?
trolley
Plural form of trolley?
The plural form of trolley is trolleys.
Why don't golf caddies use a trolley?
There are elevated tees and narrow pathways which would make a trolley impracticle. Trolleys are not allowed on tee boxes or greens so instead of wheeling the trolley round them, they can simply and quickly walk over them.
What is plural of trolley?
The plural of trolley is trolleys.
Do most good golfers carry or trolley?
trolley
What is a sentence for trolley?
You're off your trolley, mate!(British idiom meaning "you're insane / nuts!").Please go and get me a trolley for the shopping.The trolley had a wobbly wheel. I hate that.
Types of gueridon trolleys?
Gueridon trolleys are movable service trolleys which are used to serve food. The various types of Gueridon trolleys are: hors dâ??oeuvres trolley, dessert trolley, flambe trolley, carving trolley and liqueur trolley.
What is the difference between a tram and a metro rail?
"Trolley" is one American synonym for "tram" (another is "streetcar").There is an important distinction, however, between atrolleybus (which is a steerable bus running on normal road wheels that takes its power, via trolley poles, from an overhead electric line) and atram (which runs on rails, and may take its power from an overhead line - whether via a trolley pole or pantograph collector - or be otherwise powered).
