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## Ukázka písemné části přijímací zkoušky
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**Pozn: Jako desetinný oddělovač používejte prosím znak tečka (.)**
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+-----------------+-----------------+-----------------+-----------------+
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| ! | | | |
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| [](images/uploa | | | |
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| d/trojuhelnik.g | | | |
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| if){width="145" | | | |
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| height="145"}1. | | | |
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| Obsah | | | |
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| vyšrafované | | | |
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| části ve | | | |
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| čtverci o | | | |
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| straně 10 cm je | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| 25 cm^2^ | 35 cm^2^ | 45 cm^2^ | 55 cm^2^ |
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+-----------------+-----------------+-----------------+-----------------+
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| 2\. Rezistorem | | | |
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| o odporu 1MW a | | | |
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| maximálním | | | |
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| výkonu 1W může | | | |
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| procházet | | | |
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| maximální proud | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| 1 mA | 1 mA | 1 pA | 1 A |
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+-----------------+-----------------+-----------------+-----------------+
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| 3\. Závislost | | | |
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| proudu i na | | | |
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| čase t v obvodu | | | |
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| na obrázku je | | | |
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| vyjádřena | | | |
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| grafem\ | | | |
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| {width="650" | | | |
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| height="120"} | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| A | B | C | D |
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+-----------------+-----------------+-----------------+-----------------+
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| 4\. Zapojíme-li | | | |
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| paralelně tři | | | |
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| rezistory, z | | | |
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| nichž každý má | | | |
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| odpor 2 W, pak | | | |
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| celkový odpor | | | |
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| soustavy těchto | | | |
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| rezistorů je | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| 3/2 W | 2/3 W | 6 W | 1/6 W |
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+-----------------+-----------------+-----------------+-----------------+
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| 5\. Rozdíl dvou | | | |
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| čísel 1110 a | | | |
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| 100 zapsaných | | | |
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| ve dvojkové | | | |
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| soustavě je v | | | |
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| desítkové | | | |
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| soustavě roven | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| 7 | 8 | 10 | 12 |
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+-----------------+-----------------+-----------------+-----------------+
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| 6\. Zápis ve | | | |
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| tvaru např. | | | |
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| al | | | |
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| fa.pedf.cuni.cz | | | |
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| značí | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| IP adresu | doménové jméno | URL adresu | e-mailovou |
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| | | | adresu |
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+-----------------+-----------------+-----------------+-----------------+
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| 7\. Jaká | | | |
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| zkratka se | | | |
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| používá pro | | | |
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| označení | | | |
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| jednotky | | | |
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| udávající v | | | |
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| počítačové | | | |
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| grafice počet | | | |
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| bodů na palec | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| api | bpi | cpi | dpi |
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+-----------------+-----------------+-----------------+-----------------+
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| 8\. Zařízení, | | | |
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| které slouží ke | | | |
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| snímání a | | | |
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| digitalizaci | | | |
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| fotografií nebo | | | |
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| tištěných | | | |
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| materiálů, se | | | |
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| nazývá | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| plotter | tablet | skener | křížový spínač |
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+-----------------+-----------------+-----------------+-----------------+
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| 9\. Kolik | | | |
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| paměti obsadí | | | |
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| data obrázku o | | | |
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| velikosti 400 x | | | |
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| 250 pixelů s | | | |
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| barevnou | | | |
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| hloubkou 8 bitů | | | |
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| uloženého jako | | | |
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| prostá bitmapa? | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| cca 98 B | cca 98 KB | cca 98 MB | cca 98 GB |
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+-----------------+-----------------+-----------------+-----------------+
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| 10\. Mezi | | | |
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| grafické | | | |
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| soubory nepatří | | | |
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| soubory s | | | |
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| příponou | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| PNG | XLS | CDR | GIF |
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+-----------------+-----------------+-----------------+-----------------+
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+-----------------+-----------------+-----------------+-----------------+
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+-----------------+-----------------+-----------------+-----------------+
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| Úloha 1 | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| [Elektrický | | | |
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| ohřívač má dvě | | | |
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| topné spirály, | | | |
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| každou o odporu | | | |
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| R. Při sériovém | | | |
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| spojení spirál | | | |
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| je příkon | | | |
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| ohřívače Ps = 1 | | | |
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| kW. Jaký bude | | | |
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| příkon Pp, | | | |
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| spojíme-li | | | |
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| spirály | | | |
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| paralelně? | | | |
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| Napětí, k němuž | | | |
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| je ohřívač | | | |
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| připojen, se | | | |
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| nemění.\ | | | |
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| Výsledek: Pp = | | | |
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| 4kW]{.otazka} | | | |
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| ::: | | | |
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| {align="right"} | | | |
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| **P~p~ = kW** | | | |
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| ::: | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| Úloha 2 | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| {width="218" | | | |
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| heig | | | |
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| ht="118"}[Čtyři | | | |
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| kondenzátory o | | | |
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| kapacitách C1 = | | | |
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| 0,2 ľF, C2 = | | | |
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| 0,1 ľF, C3 = | | | |
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| 0,3 ľF a C4 = | | | |
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| 0,4 ľF jsou | | | |
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| zapojeny podle | | | |
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| obrázku. Určete | | | |
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| jejich | | | |
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| výslednou | | | |
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| kapa | | | |
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| citu.]{.otazka} | | | |
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| ::: | | | |
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| {align="right"} | | | |
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| **C = mF** | | | |
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| ::: | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| Úloha 3 | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| Když stlačíte u | | | |
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| školního | | | |
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| automatu | | | |
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| tlačítka 1 a 3, | | | |
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| automat vydá | | | |
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| džus a | | | |
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| žvýkačku. Při | | | |
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| stlačení | | | |
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| tlačítek 2, 3 a | | | |
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| 4 dostanete | | | |
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| džus, kofolu a | | | |
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| zákusek. Po | | | |
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| stlačení | | | |
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| tlačítek 4 a 5 | | | |
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| automat vydá | | | |
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| čokoládu a | | | |
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| zákusek. Co | | | |
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| automat vydá po | | | |
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| stlačení | | | |
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| tlačítek 3 a 4? | | | |
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| ::: | | | |
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| {align="right"} | | | |
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| ::: | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| Automat vydá: | | **džus** | |
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+-----------------+-----------------+-----------------+-----------------+
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| | | **zákusek** | |
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+-----------------+-----------------+-----------------+-----------------+
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| | | **kofolu** | |
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+-----------------+-----------------+-----------------+-----------------+
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| | | **žvýkačku** | |
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+-----------------+-----------------+-----------------+-----------------+
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| Úloha 4 | | | |
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+-----------------+-----------------+-----------------+-----------------+
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| Určete všechna | | | |
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| čtyřciferná | | | |
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| čísla, pro něž | | | |
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| platí, že | | | |
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| zvětšíme-li dvě | | | |
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| cifry takového | | | |
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| čísla vždy o 3 | | | |
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| a zbývající dvě | | | |
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| cifry zmenšíme | | | |
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| vždy o 4, tak | | | |
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| dostaneme | | | |
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| dvojnásobek | | | |
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| původního | | | |
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| čísla. Své | | | |
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| řešení ověřte. | | | |
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| Jednotlivá | | | |
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| řešení oddělte | | | |
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| čárkou: [ | | | |
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| ]{.otazka} | | | |
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| ::: | | | |
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| {align="right"} | | | |
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| ::: | | | |
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+-----------------+-----------------+-----------------+-----------------+
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::: {align="center"}
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:::
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