September 2018 1 28 Report
Przez zarowke plynie prad przeminny o natezeniu skutecznym 2mA.
a)Aby zarowka , w ktorej plynie prad staly, swiecila rownie jasno jak wowczas,gdy plynie w niej prad przeminny, prad staly musialby miec natezenie ............
b)Maksymalne natezenie pradu plynacego przez zarowke wynosi okolo ....
c) Natezenie pradu przeminnego plynacego przez zarowke osiaga wartosc maksymalna po uplywie 0,005 s od chwili , gdy ma wartosc rowna zeru.Okres tego pradu wynosi zatem .......... , a czestotliwosc .............
2.Uczen krecac korbka pradnicy wytworzyl prad przemienny o czestotliwosci 5 Hz. Woltomierz do ktorego podlaczona byla pradnica pokazywal 10 V.
a) Okres wytworzonego prądu byl rowny ......
b)Maksymalne wytwarzane przez pradnice napiecie wynosilo ..............
3. Prądnica jest żrodlem pradu ......... , natomiast ogniwo pradu ............. . Amperomierz przeznaczony do pomiaru pradu przeminnego pokazuje wartosc .......... natezenia .Maksymalne natezenie pradu przeminnego jest .... razy ......... od natezenia skutecznego tego pradu.
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1.Read the news repor. Who are the "bin police"? Choose :a)families who do not recycleb) councils who put computer chips in binsc) people who disagree with the council's actionsThe bin police?Twenty years ago, recycling was something you onnly did if you were really interested in being "green". Today, recycling is a normal activity for families all aroung the UK. Local councils make it easier for families to recycle by collecting materials from their houses. They even give them two different bins, so families can separate their rubbish from their recycling.Recently, some local councils have decided to do even more; they are putting computer chips inside the rubbish bins they give to families in their area. The chips measure the amount of rubbish in the bin and also give information about the kind of materials in the bin; paper,glass, metal. In other words, if the family throws away these materials instead of recycling them, the council finds out. And when this happens they write a letter to the family asking them to be more careful about recycling.The councils say their main aim is education. "If you regularly have problems putting the wrong items in your bins, we will simply provide guidance and possibly come out to visit you", they claim. But many people think that putting computer chips in bins is like having "bin police", and they are not happy about it!2.Are these sentences true (T) or false (F) ?a)According to the text most people recycled twenty years ago. b) If British families want to recycle, they have to go on their local recycling centre.c) Some local councils give families two separate bins for their rubbish and their recycling.d) The computer chips give information about the rubbish inside the bin.e) If a family doesn't recycle enough, they get a letter from the council.f) The councils say the main aim of the computer chips is to help the "bin police".
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