Six transformers have the rms primary voltages $($VpVp$),$ number of primary turns $($NpNp$),$ and number of secondary turns $($NsNs$)$ listed below.

Part A

Which of the transformers are step$-$up transformers? Which of the transformers are step$-$down transformers?

Place the appropriate transformers into the two categories listed below.

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Vp$=480$VVp$=480$V

Np$=4000$turnsNp$=4000$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=480$VVp$=480$V

Np$=2000$turnsNp$=2000$turns

Ns$=1000$turnsNs$=1000$turns

Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=500$turnsNs$=500$turns

Vp$=120$VVp$=120$V

Np$=500$turnsNp$=500$turns

Ns$=2000$turnsNs$=2000$turns

step$-$up transformersdroppable

step$-$down transformersdroppable

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Part B

Rank the transformers on the basis of their rms secondary voltage.

Rank from largest to smallest. To rank items as equivalent, overlap them.

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Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=120$VVp$=120$V

Np$=500$turnsNp$=500$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=500$turnsNs$=500$turns

Vp$=480$VVp$=480$V

Np$=2000$turnsNp$=2000$turns

Ns$=1000$turnsNs$=1000$turns

Vp$=480$VVp$=480$V

Np$=4000$turnsNp$=4000$turns

Ns$=2000$turnsNs$=2000$turns

smallest

largest

The correct ranking cannot be determined.

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Part C

$100$ AA of rms current is incident on the primary side of each transformer. Rank the transformers on the basis of their rms secondary current.

Rank from largest to smallest. To rank items as equivalent, overlap them.

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Vp$=120$VVp$=120$V

Np$=500$turnsNp$=500$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=2000$turnsNs$=2000$turns

Vp$=240$VVp$=240$V

Np$=1000$turnsNp$=1000$turns

Ns$=500$turnsNs$=500$turns

Vp$=480$VVp$=480$V

Np$=2000$turnsNp$=2000$turns

Ns$=1000$turnsNs$=1000$turns

Vp$=480$VVp$=480$V

Np$=4000$turnsNp$=4000$turns

Ns$=2000$turnsNs$=2000$turns

smallest

largest

The correct ranking cannot be determined.