10. DC motoren Flashcards

1
Q

Hvorfor bruger man kommuteringsbørster

A

For at sikre at der ikke opstår gnister når polariteten af ankeret skifter

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2
Q

Hvad er en ankerreaktion

A

Når der går en strøm igennem ankeret, danner det et modvirkende magnetfelt i forhold til hovedfeltet. Dette vil resultere i at den neutrale zone vil blive forskudt

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3
Q

Tegn et seriekoblet motor kredsløb

A
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4
Q

Tegn en shuntkoblet motor kredsløb

A
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5
Q

Tegn en fremmedmagnetiseret motor kredsløb

A
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6
Q

Skriv formlen for elektromotorisk kraft

A
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7
Q

Hvordan regner man U i en shuntkobling

A
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8
Q

Hvordan regner man U i en seriekobling

A
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9
Q

Hvordan regner man effekttab i ankerkredsen for en seriekoblet motor

A
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