0
Add your answer:
Earn +20 pts
What happens when an electric current encounters resistance?
An electron traveling through the wires and loads of the external circuit encounters resistance.
In the summer the power lines hang down between the posts then why dont the engineers tighten them up?
When objects are cooled down, they contract. Engineers who put up telephone wires in the summer leave the wires hanging slack so that in winter, the wires have a chance to contract without pulling the poles and damaging property or infrastructure.
What happens IF the wires from a battery charger are put the wrong way round onto battery terminals and left to charge?
charger i had was wired wrong. soon as it was plugged in the charger stopped working. if wires are wrong it just will not charge and can be dangerous!
What happens to an electric motor is it over heats?
If a fuse fails to blow or a cut-off doesn't come into play, the insulation on the wires will melt and cause a short circuit.
Why do telephone wires become loose and sag in winter?
They shouldn't, usually it is the other way around. As with all wire, the temperature effects wire lengths. When wires become warm as in a hot summer day the wires expand and droop and likewise when they become cold as in winter they contract and tighten up. The wires have to be installed to take this condition into consideration. There is a specific engineered sag allowed for each type of conductor from pole fix point to pole fix point.
When will a telephone wire be longer summer or winter?
When metals (like the copper in the telephone wires) gets exposed to heat, they expand (thermal expansion) and when the get cooled they shrink. This directly implies that cables are longer in summer when it is hot. So telephone wires are longer in the summer.
How does Summer work?
summer happens whan the earth is tilted closer to the sun
What happens if the wires on a distributor cap is wrong?
Engine will misfire, or may not start if enough wires are in the wrong place.
What happens if you leave you wires hanging?
shape of planet's orbit
Why do wires hang loose on poles in summer?
Every material expands in heat and contracts in cold. The amount of change depends on the material in question. It is important in construction to take this into account. If the cables where hung too tight in the hot summer, when it got cold in winter they would be unable contract enough and would snap. If they where hung loose in the winter, then in summer the cables would sag far too much. An engineer must take this into account when selecting the material used, and planning how much slack to leave to ensure that they will be reliable in hot and cold conditions.
What happens dogs in summer?
You have to put them in front of a low fan that cools them down in the summer!
What happens to the water in the summer?
the water table changes through the summer because of heat
What happens if you leave a volleyball in the summer?
it shrivels
What happens to the water table in the summer?
the water table changes through the summer because of heat
What happens to a bulb when more wires are added to the circuit?
it trens off
What happens during summer?
Umm it gets hot?
What happens if you don't do summer homework?
There will be more to do in the fall.
