What happens when you supply only 120V to a 240V motor?
No. If you go to a motor supplier's web page such as Grainger's you can see for yourself. I looked up a 1HP good quality 115/230V motor: 115V @ 13.4A = 1541 watts 230V @ 6.7A = 1541 watts. The power consumed is the same no matter which voltage is used. This makes sense, since the watts do the work. To get the same 1HP from the motor, on either voltage, the watts (power consumed) must stay the same. Interestingly, in a perfect, lossless world, 1HP = 746 watts. So my example motor is less than50% efficient. Ouch. Figure out how to improve this efficiency a bunch and people will throw money at your feet! Assuming the two machines are doing the same work, the 240 volt will use slightly less power, or energy.
Here's why: To do the same work (btu) in the same time (btu/hr) they have to use the same amount of input power (watts). In fact watts and btu/hr are the same thing, "power", and there is a direct conversion from one to the other: 1000 watts = 3400 btu/hr. That's assuming 100% efficiency; real a/c units will of course need more power input than that.
Now in electricity, power = voltage x current. Since power input must be the same (since the output is the same), the 240 volt unit must be drawing half the current of the 120 volt. Power, the "electricity used", would be the same...
...almost. There is a wrinkle. The 240 volt unit is drawing less current. Now resistive losses are measured in power, and are calculated from P = current squared/R. i.e. cut the current in half (as the 240 volt unit does) and you cut the resistive losses to one fourth of what they were before.
So assuming all else is equal, resistive losses will be lower in the 240-volt unit. It will therefore be slightly more efficient, and so will use sligthly less power. The difference (mentioned above) will be much less than 1%, so for all practical purposes, the power consumed will be the same.
What statement refers to the law of supply?
Law of supply states that other factors remaining constant, supply is the function of its price where an increase in price of the commodity increases quantity supplied in the the market and a decrease in price reduces quantity supplied.
What does the equillibrium point on a supply and demand graph represent?
which is true about the functional relationship shown in the graph
What happens supply exceeds demand?
The price usually goes up. If lots of people want something, you have to pay more to get it.
What effects supply and demand?
Fluctuations in the price of goods. The affect of demand on price is directly proportional and supply's affect on price is indirectly proportional.
How did supply and demand affect consumers in the south during the civil war?
During the Civil War, supply and demand significantly impacted consumers in the South, leading to shortages of essential goods. As the war disrupted trade and agricultural production, prices soared due to increased demand for basic necessities, while supply dwindled. This resulted in rampant inflation, making it difficult for many Southern families to afford food and other vital items, ultimately exacerbating the hardships faced by the civilian population. Consequently, the economic strain fueled discontent and hardship among Southern consumers throughout the conflict.
When disaster hits why does the cost of food and gas go up supply and demand?
There is no way supply and demand affect disasters, they are natural things in nature while supply and demand are economic processes. Disasters can easily decrease the supply of something, which increases the price on that good.
If demand falls and supply falls will equilibrium price rise?
In this case supply of goods surplus in the market and then their is cahnce to decreases in prices for the purpose of rises in demand.
Why is it important for businesses to understand the laws of supply and demand?
LoL........LSC students.
What is the difference elastic and inelastic demand?
Difference is that inelastic demand people need to have that item no matter what the cost. An example would be insulin for diabetic people.
Elastic demand is when someone doesn't need to buy a product if the price changes. Example is ramen noodles. If they cost $100 per packet people wouldn't buy them.
How does price level affect aggregate supply and demand?
Yes. if a price is lower, then then demand will be higher, because a person will get a relative value for less cost than it had before, and therefore more people will buy more products. and the other way around.
Why doesn't price cause a shift in demand?
Demand can remain high despite its price depending on the commodity or the product. It all depends on the commodity in question. In the US, the price of gasoline will have little change in its demand. For example, for the most part, gasoline is used by consumers to travel to work. As people must still get to work, the demand for gasoline will not change to much. Yes car vacations in the Summer may lessen, but the price won't change unless the quantity of gasoline expands.
because, thats when people want to go during their summer break so airlines cost more
Why the rice is in high price when there is a lot of output produce by the farmers?
Like all agricultural items Rice prices do go up due to demand and the pitfalls of agriculture pending weather/climate/disease/Pest destruction.
One primary example is pest damage about every 10yrs as rice yields hit a all time high so do common marsh rats in the Mekong delta of Vietnam. Drought plays a role as at certain times rice requires some flooding irrigation while too much may entirely wipe out the crop.
Rice is one of the most durable and versatile food staples with extreme low water weight and ease to store and ship also increases the most valued first food commodities in the world feeding starving regions of the world. It can be modified/enriched with nutrients and the versatile enough to be low-glycemic and glutton to be boiled into a broth to feed those too weak by famine and disease that otherwise couldn't digest other food sources.
**It is one the most highly demanded food staples in the world any crop failure/loss via storage damage or increase of demand via human conflicts to stave off mass starvation due to natural disasters or man made conflicts tethers the cost even higher pending an acceleration of one or more of these issues either limiting supply or increasing demand.
**The food service industry highly values it' for diversification and versatility to meet dietary restrictions or demands for low calorie and lower cost foods source versus the higher costs of fresh meats and higher cost produce. (see related question "why rices is a commodity for caterers?")
When demand is greater than supply does prices decrease?
If there is no form of price control in place then yes it does.
What is the effect of taxation on the supply and demand on equilibrium price?
The imposition of a tax on the commodity (or even on the factor of production) translates into increased costs of production for the producers. This is because the producers would require much more to produce a given unit of that commodity. In response to the law of supply, the quantity supplied of that commodity will decrease arising from increase in costs of production. This is equivalent to an in-ward or up-ward shift of the supply curve, from the original equilibrium position. The market re-gains equilibrium with a new higher equilibrium price and lower equilibrium quantity. The producer, however, has to compensate him or herself by adding the amount of the tax to the supply price. This suggests that the incidence of the tax is shared by both consumers and producers. The consumers pay the tax in form of increased prices of the commodity while producers will pay the tax in form of increased costs of production. The proportion of the tax paid by either the consumer or producer depends on the price elasticity of demand for the commodity. Ceteris paribus, the more price inelastic the demand for the commodity, the bigger the proportion of the tax paid by the consumers and vice versa.