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Change every "<" to ">" and ">" to "<" .
Chinese inventions made life easier for farmers and made more grain available for trade. For example, a better plow and farm tools helped increase crop production. The invention of a collar harness allowed horses to pull heavy loads. The wheelbarrow made it easier for farmers to move heavy loads by hand. Watermills used river power to grind grain. In a land of mostly farmers, these inventions were valuable.
when the load is connected to draws some current. while changing the tap of the transformer the tappings related to the winding is changed , so the load current affects the transformer. hence while changing the tap it should be noted thatAnswerThere are two types of tap-changing mechanism -'off-load' and 'on-load'. Off-load tap changers physically disconnect the winding when changing from one tap setting to the next. Accordingly, the circuit is temporarily broken, and dangerous arcing will take place if the transformer is energised. Therefore off-load tap changers require that the transformer is disconnected while the mechanism is operated.On the other hand, 'on-load' tap changers use a mechanism which incorporates a 'make before break' contact arrangement, ensuring that no break is made in the circuit as the mechanism moves from one tap setting to the next, enabling it to operate with the transformer energised and supplying load. On-load tap changers are usually automatically operated, although this feature can be overridden and operated manually.
"Made of" and "Made from" can mean the same thing. "That can is made from aluminum." "That can is made of aluminum." However, they can't be used the same in every situation. You can say: "That house is made of wood and made from workers." But you can't say: "That house is made of workers and made from wood."
Yes. Provided it is sustainably managed (many poorer countries can't to do this) Imagine a product built by solar power, made almost purely out of green house gases that produce fresh air in the process and provides a habitat for native animals and birds while being made. If someone invented we would celebrate. It is, of course, timber. Build a house out of it and lock up all that CO2 for centuries, while more CO2 is being capture by regrowing trees. If sustainable managed, forests are also valuable to people so they will more likely resist the land being cleared for mining or farming.
a gadget is a machine which is made from the technology for the usefulness of human
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The usefulness of Mendeleev's periodic table was confirmed by the discovery of elements with predicted properties.
They are valuable because they are made of 90% silver.
usefulness, great profitability, and a large size
usefulness, great profitability, and a large size
The Great Lakes made the Northwest Territory so valuable.
Jewelry is valuable due to the materials it is made up of. Jewelries are usually made of valuable minerals such as gold, diamond, and ruby; all of which have high and appreciating market value.
Gold is valuable because it is rare, durable, pretty and extremely useful.
Ivory
Their oil!
new land,massive forestland abundant fish is what made Canada a valuable colony